{"id":12971,"date":"2025-08-19T09:26:41","date_gmt":"2025-08-19T09:26:41","guid":{"rendered":"https:\/\/www.gradientm.com\/?p=12971"},"modified":"2026-09-02T09:40:34","modified_gmt":"2026-09-02T09:40:34","slug":"differences-between-chatgpt-gemini-claude-perplexity-copilot","status":"publish","type":"post","link":"https:\/\/www.gradientm.com\/blog\/understanding-the-differences-between-chatgpt-gemini-claude-perplexity-and-copilot\/","title":{"rendered":"ChatGPT vs Gemini vs Claude vs Copilot vs Perplexity vs Grok: 2026 Business Comparison"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Most of the comparisons you read on the internet ranks them by which AI tool writes the nice paragraph. If you are looking to choose AI for your team, you are not concerned about the nice paragraphs it writes probably you are more worried about how much it costs for 100 to 200 users in your team. Whether your company data leaves the country and what happens when your auditors asks where the prompts your users are typing are shared.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This guide answers those questions. Every price and policy below was verified against vendor documentation on 1 September 2026, with sources listed at the end.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If a vendor doesn\u2019t publish or publicly revealed certain information we have quoted the same instead of guessing because in enterprise procurement what a vendor declines to publish is often most useful signal you shouldn\u2019t miss.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Why does it matter? Not long ago everyone picked tools based on the kind of job the tool did for them. In 2026 we have reached a place all the tools listed in the article be it Claude, Gemini, ChatGPT, or Grok all of them can now write, reason, code and even search competently. Only differences that matter the most now are commercial and architectural &#8211; be it price, data handling, and how well the tool fits on the tech stack your orgnisation is already owing.\u00a0 That last point is <\/span><a href=\"https:\/\/www.gradientm.com\/blog\/ai-adoption-blockers\/\"><span style=\"font-weight: 400;\">why most AI projects fail<\/span><\/a><span style=\"font-weight: 400;\"> on their data foundations rather than on model choice.\u00a0<\/span><\/p>\n<h3><b>The 30-second answer<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><b>Your situation<\/b><\/td>\n<td><b>Pick<\/b><\/td>\n<td><b>Why<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">You run on Microsoft 365<\/span><\/td>\n<td><b>Microsoft 365 Copilot<\/b><\/td>\n<td><span style=\"font-weight: 400;\">It inherits your existing permissions rather than creating a second permission model to govern<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">You run on Google Workspace<\/span><\/td>\n<td><b>Gemini<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Bundled into your Workspace licence since 2025 &#8211; you may already be paying for it<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Engineering is the main use case<\/span><\/td>\n<td><b>Claude<\/b><\/td>\n<td><span style=\"font-weight: 400;\">A 1M-token context window, matched here only by Gemini, plus the most mature agentic coding tooling<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">You want one assistant for a mixed, non-Microsoft org<\/span><\/td>\n<td><b>ChatGPT Business<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Broadest feature surface, cleanest admin story outside the Microsoft stack<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">The job is research with citations<\/span><\/td>\n<td><b>Perplexity<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Built around sourcing; routes across several frontier models rather than betting on one<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">You need real-time signal from X<\/span><\/td>\n<td><b>Grok<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Direct access to the X firehose, which no competitor has<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">If you are in a regulated industry, skip to the data and compliance section before you get attached to any of these. It changes the answer more often than people expect.<\/span><\/p>\n<h3><b>What each one actually costs<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Published list prices as at 1 September 2026, in USD per user per month. Annual pricing where both are offered.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Product<\/b><\/td>\n<td><b>Entry<\/b><\/td>\n<td><b>Main business tier<\/b><\/td>\n<td><b>Enterprise<\/b><\/td>\n<td><b>Watch out for<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>ChatGPT<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Plus $20 (individual)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Business $20 annual \/ $25 monthly, 2-seat minimum<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Custom pricing, annual billing only<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Premium seats at $100 annual \/ $125 monthly for 5\u00d7 usage<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gemini<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Workspace Business Starter $7 annual \/ $8.40 monthly<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Business Standard $14 \/ $16.80 \u00b7 Business Plus $22 \/ $26.40<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Contact sales<\/span><\/td>\n<td><span style=\"font-weight: 400;\">AI is bundled into the Workspace SKU rather than sold as a separate Gemini add-on &#8211;\u00a0 but Starter gets limited access, and a paid &#8220;AI Expanded Access&#8221; add-on exists for higher limits<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Claude<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Pro $17 annual \/ $20 monthly<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Team $20 annual \/ $25 monthly, 2\u2013150 people<\/span><\/td>\n<td><span style=\"font-weight: 400;\">$20 per seat <\/span><b>plus usage at API rates<\/b><span style=\"font-weight: 400;\">, 20-seat minimum, annual<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Enterprise is the only one here with a usage component on top of the seat<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Microsoft 365 Copilot<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Copilot Chat, included with eligible M365 subscriptions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">M365 Copilot Business standalone $18 after a 15% promo running to 31 Dec 2026, 1\u2013300 licences<\/span><\/td>\n<td><span style=\"font-weight: 400;\">$30 annual \/ $31.50 monthly, annual commitment<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Requires a qualifying M365 subscription the $30 is on top<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Perplexity<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Pro $20<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Enterprise Pro $40 per seat, or $400 per seat annually<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Enterprise Max $325 per seat \/ $3,250 annually<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The gap between Enterprise Pro and Enterprise Max is eight times<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Grok<\/b><\/td>\n<td><span style=\"font-weight: 400;\">SuperGrok $30<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Grok Business &#8211; xAI now directs buyers to sales rather than publishing a seat price<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Custom pricing<\/span><\/td>\n<td><span style=\"font-weight: 400;\">SSO and directory sync are Enterprise-only, Business does not include them<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Three things this table hides, which matter more than the numbers in it.<\/span><\/p>\n<p><b>Copilot requires a prerequisite licence.<\/b><span style=\"font-weight: 400;\"> The $30 sticker price is an add-on cost on top of a qualifying Microsoft 365 subscription, so budgeting based on the headline figure alone will overlook the expense of the underlying seat. Since 1 July 2026, Microsoft has offered unified SKUs &#8211; Business Standard with Copilot for $23.50 and Business Premium with Copilot for $32 &#8211; which frequently work out cheaper than separate line items. Note the current $21 Business Basic bundle available until the end of 2026, and a 15% discount for three-year commitments exceeding 300 users. This larger discount expires on 30 September 2026, making it worth pricing renewals this month. Compare every deployment path before signing; the commercial variance is often significant.<\/span><\/p>\n<p><b>Claude Enterprise bills usage on top of seats.<\/b><span style=\"font-weight: 400;\"> At $20 per seat plus API-rate usage, a heavy engineering team can cost several times a light one on identical seat counts. Model your actual token consumption before committing. Every other vendor here is flat-rate per seat.<\/span><\/p>\n<p><b>Gemini may already be paid for.<\/b><span style=\"font-weight: 400;\"> Google folded the Gemini add-on into Workspace SKUs and raised base prices in 2025. If you renewed after that, AI is in your licence. A surprising number of Workspace organisations are buying a second assistant they did not need. Check which tier you are on first &#8211; Business Starter gets limited Gemini access, and heavier use may still need the paid AI Expanded Access add-on.<\/span><\/p>\n<h3><b>Data, security and compliance<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">This is where enterprise deals are won and lost, and it is the section most comparison articles skip.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><\/td>\n<td><b>Trains on your data<\/b><\/td>\n<td><b>Retention<\/b><\/td>\n<td><b>Data residency<\/b><\/td>\n<td><b>SSO<\/b><\/td>\n<td><b>SCIM<\/b><\/td>\n<td><b>Audit logs<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>ChatGPT Business<\/b><\/td>\n<td><span style=\"font-weight: 400;\">No, by default<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Admin-configurable; deleted conversations purged within 30 days<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Enterprise tier only<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Enterprise only<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Enterprise only<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>ChatGPT Enterprise<\/b><\/td>\n<td><span style=\"font-weight: 400;\">No, by default<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Customer-controlled<\/span><\/td>\n<td><span style=\"font-weight: 400;\">US, EU, UK, Japan, Canada, Korea, Singapore, India, Australia, UAE<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes, via Compliance API<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gemini \/ Workspace<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Not without your permission or instruction<\/span><\/td>\n<td><span style=\"font-weight: 400;\">90 days to indefinite, admin-set; Gemini app up to 36 months<\/span><\/td>\n<td><span style=\"font-weight: 400;\">US, Europe, or no preference<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211;<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Via Vault<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Claude Enterprise<\/b><\/td>\n<td><span style=\"font-weight: 400;\">No, by default opt-in only<\/span><\/td>\n<td><span style=\"font-weight: 400;\">API inputs and outputs deleted within 30 days<\/span><\/td>\n<td><span style=\"font-weight: 400;\">US and Asia-Pacific via Bedrock, Vertex or Microsoft Foundry; Canada and Europe listed as coming in 2026 &#8211; see the caveat below<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes, with domain capture<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes, with JIT provisioning<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes, plus Compliance API<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>M365 Copilot<\/b><\/td>\n<td><span style=\"font-weight: 400;\">No foundation-model training on tenant data<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Governed by Purview retention policies; the Anthropic preview path adds Anthropic-side retention<\/span><\/td>\n<td><span style=\"font-weight: 400;\">EU Data Boundary service &#8211; <\/span><b>with a significant exception, below<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Entra ID<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Via Purview<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Perplexity Enterprise<\/b><\/td>\n<td><span style=\"font-weight: 400;\">No &#8211; enterprise data never used for training<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Uploaded files auto-delete after 7 days by default; session retention admin-configurable<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Not published<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes, with MFA<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Yes<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Grok Business<\/b><\/td>\n<td><span style=\"font-weight: 400;\">No, on business, enterprise or API data<\/span><\/td>\n<td><span style=\"font-weight: 400;\">30 days by default on API; zero-data-retention available; custom retention on Business and Enterprise<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Not published<\/span><\/td>\n<td><b>Enterprise tier only<\/b><\/td>\n<td><b>Enterprise tier only<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Enterprise tier<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">One caveat on Anthropic residency, because it is the kind of detail that derails a procurement cycle: their regional-compliance documentation is internally inconsistent. While the availability table marks the US and Asia-Pacific as live-listing Canada and Europe as &#8220;coming 2026&#8221;-the FAQ on that same page describes Europe as currently available. If <\/span><b>European residency<\/b><span style=\"font-weight: 400;\"> is a prerequisite for your organisation, secure a written confirmation from the vendor rather than relying on the public website.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A second observation on Grok: governance controls are tier-gated. Identity features-including organisations, custom SSO, and directory sync-are restricted to the <\/span><b>Enterprise tier<\/b><span style=\"font-weight: 400;\">. The $30 self-serve Business tier provides consolidated billing and team analytics but lacks these critical identity controls. Most 2026 comparisons overlook this distinction.<\/span><\/p>\n<p><b>Certifications.<\/b><span style=\"font-weight: 400;\"> OpenAI, Google and Anthropic have reached the same baseline, holding SOC 2 Type 2, ISO 27001 and ISO 42001 and if those standards are new territory for your team, our guide to <\/span><a href=\"https:\/\/www.gradientm.com\/blog\/soc2-iso27001-security-privacy-guide\/\"><span style=\"font-weight: 400;\">what SOC 2 and ISO 27001 <\/span><\/a><span style=\"font-weight: 400;\">actually require covers what an audit involves. Google additionally holds FedRAMP High, while OpenAI lists PCI DSS and FedRAMP 20x. When assessing HIPAA, the scope is the differentiator: Google and Anthropic provide BAAs for their assistant products, whereas the OpenAI BAA is scoped to the API Platform rather than ChatGPT generally a distinction that matters if you are working through <\/span><a href=\"https:\/\/www.gradientm.com\/blog\/understanding-hipaa-compliance\/\"><span style=\"font-weight: 400;\">HIPAA compliance obligations<\/span><\/a><span style=\"font-weight: 400;\">. Perplexity and xAI both hold SOC 2 Type 2 but do not publish ISO 27001 or ISO 42001 certifications.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Note that Perplexity and xAI decline to publish specific data-residency commitments. Both vendors gate their full trust documentation behind portals xAI&#8217;s explicitly requires an NDA. This is not necessarily a signal of a problem, but it means you cannot pre-qualify them using public documentation; budget extra time for your security review to navigate these requirements.<\/span><\/p>\n<h3><b>Three things most 2026 comparisons get wrong<\/b><\/h3>\n<ol>\n<li><b> Copilot is no longer only OpenAI &#8211; and that has a compliance consequence.<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Microsoft 365 Copilot now runs Anthropic models alongside OpenAI&#8217;s, with Anthropic acting as a Microsoft subprocessor. Claude Fable 5 and Claude Mythos 5 are available in Excel and PowerPoint, with Word stated as coming in summer 2026.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Here is the part almost nobody covers: <\/span><b>the Anthropic models are excluded from the EU Data Boundary<\/b><span style=\"font-weight: 400;\"> and from Microsoft&#8217;s in-country processing commitments. They are disabled by default in the EU, EFTA and the UK, disabled by default for non-federal GCC since 22 July 2026, and unavailable in GCC High, DoD and other sovereign clouds. An admin can enable them tenant-wide or for specific groups. Retention differs too &#8211; the Anthropic path carries its own 30-day retention, extendable to two years where a policy violation is suspected.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If your organisation bought Copilot partly on the strength of the EU Data Boundary, that guarantee does not extend to the Anthropic-powered features. Someone should be making that decision deliberately, with a documented rationale &#8211; not discovering it during an audit.<\/span><\/p>\n<ol start=\"2\">\n<li><b> &#8220;We don&#8217;t train on your data&#8221; is table stakes, not a differentiator.<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Every vendor in this comparison now commits to not training on business customer data by default. It has stopped being a selling point. The questions that actually separate them are the ones underneath: how long is data retained, can you change that, where does inference physically execute, and can you prove any of it to an auditor?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On those, the spread is wide, and it is still moving. OpenAI announced Private Safety Processing on 19 August 2026, extending zero-data-retention to cover cross-interaction safety monitoring so customer content can remain on customer infrastructure or under customer-held keys &#8211; with the rollout and technical white paper due during September. If ZDR is a requirement for you, that is worth a fresh conversation with OpenAI rather than relying on terms you were quoted earlier in the year.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Elsewhere the gaps are structural. ChatGPT gives you SCIM and audit logs only at Enterprise tier. Claude retains Fable 5 and Mythos 5 prompts for 30 days <\/span><i><span style=\"font-weight: 400;\">even for organisations with zero-data-retention agreements<\/span><\/i><span style=\"font-weight: 400;\"> &#8211; those orgs must enable standard retention to use those models at all. OpenAI separates data residency from inference residency, and in-region inference is available only in Europe, the US and the UAE, and only if you have data residency first.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Those are the details that fail a security review. &#8220;We don&#8217;t train on your data&#8221; never does.<\/span><\/p>\n<ol start=\"3\">\n<li><b> Seat count is the wrong unit for budgeting.<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Three of the six have a pricing dimension that does not scale linearly with headcount. Claude Enterprise adds usage-based billing on top of seats. ChatGPT and Claude both sell premium seats at roughly five times the standard price for heavier usage. Copilot requires a base licence underneath. Build the model on expected usage patterns, not seat count, or you will present a number to your CFO that you cannot hold.<\/span><\/p>\n<h3><b>The models behind each tool, September 2026<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The model landscape moves every few months, so treat this section as the most perishable part of this guide.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Tool<\/b><\/td>\n<td><b>Current models<\/b><\/td>\n<td><b>Context window<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>ChatGPT<\/b><\/td>\n<td><span style=\"font-weight: 400;\">GPT-5.6 family, launched 9 July 2026 &#8211; Sol (flagship), Terra (balanced), Luna (cost-efficient)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">272K on Sol, 128K on Terra and Luna, within ChatGPT<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gemini<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Gemini 3.7 Flash is the generally available lead model; Gemini 3.1 Pro remains in preview, with Gemini 3.5 Pro flagged as coming soon<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1M input, 64K output on 3.1 Pro<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Claude<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Claude Fable 5 as flagship, with Opus 5 (24 July 2026), Sonnet 5 (30 June 2026) and Haiku 4.5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1M tokens and 128K output on Fable 5, Opus 5 and Sonnet 5; Haiku 4.5 is 200K<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>M365 Copilot<\/b><\/td>\n<td><span style=\"font-weight: 400;\">OpenAI models plus Anthropic&#8217;s Fable 5 and Mythos 5 in preview<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Varies by underlying model<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Perplexity<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Sonar 2 in-house, plus frontier models from OpenAI, Google, Anthropic and xAI depending on plan tier<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Varies by model<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Grok<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Grok 4.6, current flagship; Grok 4.5 still available<\/span><\/td>\n<td><span style=\"font-weight: 400;\">500K tokens; knowledge cutoff February 2026<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">One caveat on context windows: the figures above are what you get <\/span><b>inside each vendor&#8217;s own assistant<\/b><span style=\"font-weight: 400;\">. Via cloud platforms the limits can be higher &#8211; GPT-5.6 supports a 1M-token window on Amazon Bedrock, for instance. If long context is central to your use case, check the deployment path, not just the model name.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Two observations worth more than the numbers. Anthropic&#8217;s flagship is <\/span><b>Fable 5<\/b><span style=\"font-weight: 400;\">, not Opus 5 &#8211; Opus 5 is positioned as roughly half the cost at comparable results, which for most business workloads makes it the more sensible default. And Perplexity is not really a model company: it routes across several frontier models, so what you get depends on your plan tier rather than on a single vendor&#8217;s roadmap.<\/span><\/p>\n<h3><b>How each one is actually positioned<\/b><\/h3>\n<p><b>Microsoft 365 Copilot<\/b><span style=\"font-weight: 400;\"> is the default for Microsoft-centric organisations, and the reason is governance rather than capability. It only surfaces data a user already has permission to see, honours sensitivity labels and IRM, and is managed through Purview alongside everything else. If you have spent years building a permissions model in M365, Copilot is the only option that reuses it instead of asking you to build a second one. t is also the route into <\/span><a href=\"https:\/\/www.gradientm.com\/blog\/chatbots-ai-agents-microsoft-copilot\/\"><span style=\"font-weight: 400;\">building agents on Microsoft Copilot<\/span><\/a><span style=\"font-weight: 400;\">, which is where most Microsoft-first organisations get their first real return.\u00a0<\/span><\/p>\n<p><b>Gemini<\/b><span style=\"font-weight: 400;\"> has the same logic on the Google side. Google is also shipping fastest of the six right now &#8211; Gemini 3.5 Transcribe and Transcribe Live reached general availability on 26 August 2026 and Gemini Omni 1.1 Flash on 27 August, with Gemini 3.5 Pro flagged as coming. It has an unusually clean data-residency story &#8211; US, Europe or no preference, set at the admin level, with Gemini app data regions reaching general availability on 29 June 2026 for Enterprise Plus and equivalent tiers. If you are on Workspace, check your licence before you buy anything else.<\/span><\/p>\n<p><b>ChatGPT Business and Enterprise<\/b><span style=\"font-weight: 400;\"> offer the broadest capability surface and the widest data-residency list &#8211; ten regions at Enterprise tier. The catch is the feature gap between Business and Enterprise: SCIM, audit logs and residency are all Enterprise-only, and Enterprise is custom-priced and annual-billed. If you need those controls, budget for Enterprise from the start rather than planning to upgrade.<\/span><\/p>\n<p><b>Claude<\/b><span style=\"font-weight: 400;\"> is the developer and long-context choice. A 1M-token window handles entire codebases or document sets in a single pass, and the agentic coding tooling is the most mature in this group. If you are weighing how to ground a model on your own data, that decision <\/span><a href=\"https:\/\/www.gradientm.com\/blog\/rag-vs-fine-tuning\/\"><span style=\"font-weight: 400;\">RAG or fine-tuning<\/span><\/a><span style=\"font-weight: 400;\"> usually matters more than which assistant you licence. Enterprise security is thorough &#8211; customer-managed encryption keys, US-only inference, IP allowlisting, connector governance. Note the 20-seat minimum, the usage-based billing, and one sharp edge: prompts and outputs for Fable 5 and Mythos 5 are retained for 30 days <\/span><i><span style=\"font-weight: 400;\">even for organisations holding zero-data-retention agreements<\/span><\/i><span style=\"font-weight: 400;\">, and ZDR organisations must enable standard retention to use those models at all.<\/span><\/p>\n<p><b>Perplexity<\/b><span style=\"font-weight: 400;\"> is a research tool that happens to have a chat interface. Everything is built around citation and sourcing, which is what you want for competitive analysis, due diligence and market research where the provenance of a claim matters as much as the claim. The Comet browser and the Computer agent product extend it beyond a search box. Weaker on published enterprise compliance detail than the big three.<\/span><\/p>\n<p><b>Grok<\/b><span style=\"font-weight: 400;\"> occupies a genuine niche: real-time access to the X firehose, which nothing else in this comparison can offer. For brand monitoring, crisis detection and sentiment analysis that is a real advantage. Enterprise credentials are better than its reputation suggests &#8211; SOC 2 Type 2, GDPR compliance, a HIPAA BAA on request, plus SSO, SCIM, RBAC and audit logs at Enterprise tier. Two gaps to plan around: those identity controls are not in the $30 Business tier, and data residency is not publicly documented. xAI also gates its full trust documentation behind an NDA, so budget extra time for security review.<\/span><\/p>\n<h3><b>How to choose without running a six-month evaluation<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Work in this order. It eliminates most of the field before you spend time on demos.<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Start with your stack.<\/b><span style=\"font-weight: 400;\"> If you are on M365 or Workspace, your default is Copilot or Gemini respectively. The integration and governance advantage usually beats a capability advantage elsewhere.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Apply your compliance constraints next.<\/b><span style=\"font-weight: 400;\"> Data residency requirements, sector regulation and certification needs will eliminate options faster than any feature comparison. Do this before demos, not after.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Model the real cost.<\/b><span style=\"font-weight: 400;\"> Seats, usage, premium tiers, prerequisite licences. Use expected usage, not headcount.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Then, and only then, pilot on capability<\/b><span style=\"font-weight: 400;\"> &#8211; with a real workload and a defined success measure, not a two-week free trial that nobody structures.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Note that the assistant is a separate decision from the platform you build on. If you are also standing up custom AI applications, deploying enterprise AI on <\/span><a href=\"https:\/\/www.gradientm.com\/blog\/azure-ai-foundry-implementation\/\"><span style=\"font-weight: 400;\">Azure AI Foundry<\/span><\/a><span style=\"font-weight: 400;\"> is a parallel workstream with its own governance requirements.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Most organisations end up with two: a primary assistant that lives inside their productivity suite, and a specialist for research or engineering. That is a reasonable outcome, not a failure to decide. What is not reasonable is six overlapping tools bought by six different departments, which is the situation we are most often called in to untangle.<\/span><\/p>\n<h3><b>Ready to make this decision properly?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Choosing the tool is step one. Deploying it without opening a data-governance gap is step two, and it is the one that takes the expertise.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">At Gradient M we help organisations build secure <\/span><a href=\"https:\/\/www.gradientm.com\/digital-workplace\"><span style=\"font-weight: 400;\">digital workplaces<\/span><\/a><span style=\"font-weight: 400;\"> and design the <\/span><a href=\"https:\/\/www.gradientm.com\/data-ai\"><span style=\"font-weight: 400;\">data and AI <\/span><\/a><span style=\"font-weight: 400;\">foundations underneath them &#8211; assessing the options against your actual compliance position, modelling the real cost, and running the rollout.\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/www.gradientm.com\/request-consultation\" class=\"btn2\"><b>Book a free AI readiness assessment \u2192<\/b><\/a><\/p>\n<h3><b>Frequently asked questions<\/b><\/h3>\n<div class=\"faq-accordion\">\n<details class=\"faq-item\">\n<summary>Which AI is best for business in 2026?<\/summary>\n<div class=\"faq-answer\">\n<p>There is no single answer, and any article that gives you one is selling something. The right choice follows your existing stack: Microsoft 365 organisations should default to Copilot, Google Workspace organisations to Gemini. From there, compliance requirements narrow the field further than any feature comparison will.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Is Microsoft Copilot safe for financial or regulated data?<\/summary>\n<div class=\"faq-answer\">\n<p>Copilot does not use your prompts, responses or Microsoft Graph data to train foundation models, honours your existing M365 permissions, and is covered by Purview retention policies. Important caveat for 2026: Copilot now also runs Anthropic models, and those are excluded from the EU Data Boundary, disabled by default in the EU, EFTA and UK and for non-federal GCC, and unavailable in GCC High and DoD. If your compliance position depends on the EU Data Boundary, keep them disabled or approve them deliberately and document the decision.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Do any of these train their models on my company&#8217;s data?<\/summary>\n<div class=\"faq-answer\">\n<p>Not by default. OpenAI, Google, Anthropic, Microsoft, Perplexity and xAI all commit to not training on business or enterprise customer data without permission. The meaningful differences are in retention periods, residency and auditability &#8211; not in the training commitment itself.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Which AI has the best data privacy for enterprises?<\/summary>\n<div class=\"faq-answer\">\n<p>For published, verifiable controls, OpenAI, Google and Anthropic lead &#8211; all three hold SOC 2 Type 2, ISO 27001 and ISO 42001. OpenAI publishes the longest data-residency list at ten regions, though its HIPAA BAA is scoped to the API Platform rather than ChatGPT generally. Anthropic offers customer-managed encryption keys and US-only inference. Google offers the simplest residency model &#8211; US, Europe, or no preference. Perplexity and xAI hold SOC 2 Type 2 but publish neither ISO 27001 nor residency commitments.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>ChatGPT vs Copilot for enterprise &#8211; which should we pick?<\/summary>\n<div class=\"faq-answer\">\n<p>If you run Microsoft 365, Copilot, because it reuses your permission model rather than creating a parallel one. If you do not, ChatGPT Enterprise offers a broader feature set and wider residency options. Budget for ChatGPT Enterprise rather than Business if you need SCIM, audit logs or data residency &#8211; those are Enterprise-only.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>How much does Microsoft 365 Copilot cost per user?<\/summary>\n<div class=\"faq-answer\">\n<p>$30 per user per month on annual commitment, $31.50 billed monthly, on top of a qualifying Microsoft 365 subscription. Since 1 July 2026 Microsoft also sells combined SKUs &#8211; Business Standard with Copilot at $23.50 and Business Premium with Copilot at $32 &#8211; which are frequently cheaper than the add-on route. There is also a standalone M365 Copilot Business at $18 for 1-300 licences.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>What is the largest context window available?<\/summary>\n<div class=\"faq-answer\">\n<p>Inside the vendors&#8217; own assistants, Claude and Gemini both offer 1M tokens, Grok 4.6 offers 500K, and GPT-5.6 Sol offers 272K. Via cloud platforms the ceilings differ &#8211; GPT-5.6 supports 1M tokens on Amazon Bedrock, for example &#8211; so check your deployment path. For most business use a larger window matters less than people assume: it is decisive for whole-codebase analysis or large document sets, and largely irrelevant for drafting and summarisation.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Do we need more than one AI assistant?<\/summary>\n<div class=\"faq-answer\">\n<p>Often two, rarely more. A primary assistant inside your productivity suite covers most day-to-day work; a specialist tool for research or engineering covers the rest. Beyond two, you are usually paying twice for overlapping capability and governing two sets of controls for no benefit.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>Is Grok usable in a business context?<\/summary>\n<div class=\"faq-answer\">\n<p>Yes, and its enterprise credentials are stronger than its public reputation suggests &#8211; SOC 2 Type 2, GDPR compliance, a HIPAA BAA on request, and SSO, SCIM, RBAC and audit logs at Enterprise tier. Its genuine differentiator is real-time X data for brand monitoring and sentiment analysis. Two things to plan around: those identity controls are Enterprise-only and not included in the $30 Business tier, and data residency is not publicly documented, so allow more time for security review.<\/p>\n<\/p><\/div>\n<\/details>\n<details class=\"faq-item\">\n<summary>How often does this comparison need updating?<\/summary>\n<div class=\"faq-answer\">\n<p>Model names and context windows change every few months. Pricing and data-handling terms change roughly annually. We re-verify this page quarterly; the &#8220;last verified&#8221; date at the top tells you how current it is.<\/p>\n<\/p><\/div>\n<\/details>\n<\/div>\n<p>&nbsp;<\/p>\n<h3><b>Sources<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Verified 1 September 2026.<\/span><\/p>\n<p><b>OpenAI:<\/b><a href=\"https:\/\/openai.com\/index\/gpt-5-6\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">GPT-5.6 announcement<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/openai.com\/business\/chatgpt-pricing\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">ChatGPT business pricing<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/help.openai.com\/en\/articles\/12003714-chatgpt-business-models-limits\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Business models and limits<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/openai.com\/enterprise-privacy\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Enterprise privacy<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/help.openai.com\/en\/articles\/9903489-data-residency-and-inference-residency-for-chatgpt\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Data residency<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/trust.openai.com\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Trust portal<\/span><\/a><\/p>\n<p><b>Google:<\/b><a href=\"https:\/\/ai.google.dev\/gemini-api\/docs\/models\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Gemini API models<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/deepmind.google\/models\/gemini\/pro\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Gemini Pro<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/workspace.google.com\/pricing\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Workspace pricing<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/knowledge.workspace.google.com\/admin\/generative-ai\/generative-ai-in-google-workspace-privacy-hub\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Generative AI privacy hub<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/knowledge.workspace.google.com\/admin\/compliance\/choose-a-geographic-location-for-your-data\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Data regions<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/workspaceupdates.googleblog.com\/2026\/06\/gemini-app-data-regions-support.html\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Gemini app data regions GA<\/span><\/a><\/p>\n<p><b>Anthropic:<\/b><a href=\"https:\/\/platform.claude.com\/docs\/en\/about-claude\/models\/overview\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Model overview<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/www.anthropic.com\/news\/claude-opus-5\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Claude Opus 5<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/claude.com\/pricing\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Pricing<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/claude.com\/solutions\/enterprise\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Enterprise<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/claude.com\/regional-compliance\"> <span style=\"font-weight: 400;\">Regional compliance<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/privacy.claude.com\/en\/articles\/7996868-is-my-data-used-for-model-training\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Model training policy<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/support.claude.com\/en\/articles\/15425996-data-retention-practices-for-covered-models\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Retention for covered models<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/privacy.claude.com\/en\/articles\/10015870-what-certifications-has-anthropic-obtained\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Certifications<\/span><\/a><\/p>\n<p><b>Microsoft:<\/b><a href=\"https:\/\/www.microsoft.com\/en-us\/microsoft-365\/copilot\/enterprise\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">M365 Copilot enterprise<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/learn.microsoft.com\/en-us\/copilot\/microsoft-365\/microsoft-365-copilot-privacy\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Copilot privacy<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/learn.microsoft.com\/en-us\/microsoft-365\/copilot\/connect-to-ai-subprocessor\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Anthropic subprocessor<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/learn.microsoft.com\/en-us\/microsoft-365\/copilot\/copilot-anthropic-apps\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Anthropic models in apps<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/learn.microsoft.com\/en-us\/partner-center\/announcements\/2026-june\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Partner Center, June 2026<\/span><\/a><\/p>\n<p><b>Perplexity:<\/b><a href=\"https:\/\/www.perplexity.ai\/enterprise\/pricing\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Enterprise pricing<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/www.perplexity.ai\/enterprise\/security\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Enterprise security<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/www.perplexity.ai\/help-center\/en\/articles\/11187708-data-retention-and-privacy-for-enterprise-organizations-and-users\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Data retention and privacy<\/span><\/a><\/p>\n<p><b>xAI:<\/b><a href=\"https:\/\/docs.x.ai\/docs\/models\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Models<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/x.ai\/pricing\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Pricing<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/x.ai\/news\/grok-business\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Grok Business<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/docs.x.ai\/docs\/grok-business\/organization\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Organizations and SSO<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/docs.x.ai\/developers\/faq\/security\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">API security FAQ<\/span><\/a><\/p>\n<p><b>Other:<\/b><a href=\"https:\/\/aws.amazon.com\/about-aws\/whats-new\/2026\/08\/gpt-sol-terra-luna-long-context-bedrock\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">GPT-5.6 long context on Amazon Bedrock<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/openai.com\/index\/offering-zero-data-retention-for-frontier-models\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">OpenAI zero-data-retention for frontier models<\/span><\/a><span style=\"font-weight: 400;\"> \u00b7<\/span><a href=\"https:\/\/ai.google.dev\/gemini-api\/docs\/changelog\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Gemini API changelog<\/span><\/a><\/p>\n<p><i><span style=\"font-weight: 400;\">Pricing and policies change. Verify current terms with each vendor before purchase.<\/span><\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Most of the comparisons you read on the internet ranks them by which AI tool writes the nice paragraph. If you are looking to&hellip;<\/p>\n","protected":false},"author":4,"featured_media":13303,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[102],"tags":[],"class_list":["post-12971","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ChatGPT vs Gemini vs Claude vs Copilot vs Perplexity: 2026 Comparison<\/title>\n<meta name=\"description\" content=\"Compare ChatGPT, Gemini, Claude, Copilot, Perplexity and Grok for business in 2026: real per-seat pricing, data retention, residency and compliance - verified September 2026.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.gradientm.com\/blog\/understanding-the-differences-between-chatgpt-gemini-claude-perplexity-and-copilot\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ChatGPT vs Gemini vs Claude vs Copilot vs Perplexity: 2026 Comparison\" \/>\n<meta property=\"og:description\" content=\"Compare ChatGPT, Gemini, Claude, Copilot, Perplexity and Grok for business in 2026: real per-seat pricing, data retention, residency and compliance - 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