ChatGPT, Claude, and Gemini are the three AI platforms that UK businesses are actually using in 2026. Each takes a different approach to pricing, data privacy, and capability – and choosing the wrong one wastes money on features you do not need or leaves you exposed on compliance.
This comparison cuts through the marketing to show what each platform actually costs, what it does best, and which is the right choice for your business based on team size, use case, and data sensitivity.
- ChatGPT Business at $20/user/month is the most versatile option - widest model lineup (GPT-5.5 Instant/Thinking/Pro), strongest custom GPT ecosystem, image generation and code interpreter built in
- Claude Pro at $17/user/month is best for long documents and careful analysis - 1 million token context on Opus 4.7 and Sonnet 4.6 handles entire codebases or contracts; most nuanced reasoning of the three
- Google AI Plus at £6.99/month is the cheapest individual plan - rebranded from Gemini Advanced in 2026; integrates natively with Gmail, Docs, Sheets, and Drive via Google Workspace
- All three offer free tiers with significant limitations on speed and models - free plans use lighter models, have strict daily caps, and offer no data privacy guarantees for business use
- Start with 1 paid seat and test all three over 30 days before rolling out - each excels at different tasks, so match the tool to your highest-volume use case rather than choosing on features alone
Pricing Comparison: What UK Businesses Actually Pay
All three platforms offer free tiers with limited capability and paid plans that unlock the full models. For business use, you need a paid plan – the free tiers have usage caps, slower models, and no data privacy guarantees.
| Plan | ChatGPT | Claude | Gemini |
|---|---|---|---|
| Free | GPT-5.5 Instant, limited usage | Claude Haiku 4.5, limited usage | Gemini 3.5 Flash + limited 3.1 Pro |
| Cheapest paid | $8/mo (Go) | $17/mo annual (Pro) | £6.99/mo (Google AI Plus) |
| Standard individual | $20/mo (Plus) | $20/mo flat (Pro) | £18.99/mo (Google AI Pro) |
| Power user | $100/mo (Pro: agent mode, Codex) | $100/mo (Max: 5x or 20x Pro usage) | £79.99-£189.99/mo (Google AI Ultra) |
| Business / team | $20/user/mo (Business, renamed from Team) | $25/seat/mo (Team) | £5.90-£18.40/user/mo (Workspace plans) |
| Enterprise | Custom pricing | Custom pricing | Custom pricing |
| Best model access | GPT-5.5 Pro (270K context) | Claude Opus 4.7 (1M context) | Gemini 3.1 Pro |
ChatGPT and Claude bill in USD; Google AI plans and Google Workspace bill in GBP. For a team of 10 on standard business plans, the annual cost ranges from approximately £708 (Google Workspace Starter at £5.90/user) to roughly £1,900 (ChatGPT Business at $20/user, GBP-equivalent) or £2,375 (Claude Team at $25/seat). Heavier-use tiers and add-ons (Google AI Pro, ChatGPT Pro, Claude Max) scale higher.
Capability Comparison: What Each Does Best
The three platforms have converged significantly in raw capability, but each has distinct strengths that matter for specific business use cases.
ChatGPT: The Swiss Army Knife
ChatGPT is the most feature-rich platform. The 2026 lineup is GPT-5.5 Instant (free), GPT-5.5 Thinking (Plus and Business), and GPT-5.5 Pro (Pro tier), with a 270,000-token context window across the paid tiers. It combines text generation with image creation (GPT-Image-2 on the API, image generation included in the apps), web browsing, code execution via Codex, file analysis, custom GPTs, and agent mode on the $100/month Pro tier. For businesses that need one tool to handle a wide range of tasks – drafting emails, analysing spreadsheets, generating images, writing code, running multi-step agent workflows – ChatGPT offers the broadest capability set. Its weakness is that it sometimes prioritises being helpful over being accurate, producing confident-sounding responses that contain subtle errors.
Claude: The Careful Analyst
Claude excels at tasks requiring careful reading, nuanced analysis, and working with long documents. The 2026 lineup is Claude Haiku 4.5 (free, 200K context), Claude Sonnet 4.6 (Pro, 1M context), and Claude Opus 4.7 (Pro and Max, 1M context). The 1-million-token context window on Sonnet 4.6 and Opus 4.7 is around five times larger than ChatGPT’s 270K – in practical terms it can hold entire contracts, multi-codebase repositories, or hundreds of pages of regulatory text in a single conversation. Claude is notably more cautious than ChatGPT, which means fewer hallucinated facts but occasionally more conservative responses. For legal teams, compliance departments, and any business that needs accurate analysis of long documents, Claude is the strongest choice.
Gemini: The Google Ecosystem Player
Gemini’s primary advantage is deep integration with Google Workspace. The 2026 consumer lineup runs Gemini 3.5 Flash on the free tier, Gemini 3.1 Pro on Google AI Pro (£18.99/month), and the same plus higher quotas on Google AI Plus (£6.99/month, rebranded from Gemini Advanced). Specialist tools include Imagen 4 (image generation) and Veo 3.1 (video) on Ultra and Workspace plans.
Gemini can draft emails in Gmail, create presentations in Slides, analyse data in Sheets, and search your Drive – all from within the tools your team already uses. If your business runs on Google Workspace, Gemini eliminates the friction of switching between apps. Its standalone reasoning has closed most of the gap to ChatGPT and Claude in 2026, and the integration advantage is real and measurable in time saved.
Data Privacy and GDPR Compliance
For UK businesses, how each platform handles your data is not optional to understand – it directly affects your GDPR obligations.
| Factor | ChatGPT | Claude | Gemini |
|---|---|---|---|
| Training on your data | No (Team/Enterprise) | No (any paid plan) | No (Workspace plans) |
| Data residency | US servers | US servers (EU available for API) | EU/UK options via Workspace |
| SOC 2 Type II | Yes | Yes | Yes |
| GDPR DPA available | Yes (Team/Enterprise) | Yes | Yes (via Google Cloud) |
| SSO/SAML | Enterprise only | Enterprise only | All Workspace plans |
| Audit logs | Enterprise only | Enterprise only | All Workspace plans |
Key point for UK businesses: On free plans, all three platforms may use your conversations to improve their models. On paid business plans, none of them do. If you are inputting any client data, financial information, or personal data, a paid plan is a GDPR requirement – not a nice-to-have.
Gemini has the strongest data residency story for UK businesses because Google Workspace already stores data in European data centres. ChatGPT and Claude process data on US servers, relying on Data Privacy Framework certification and Standard Contractual Clauses for legal compliance.
Best Use Cases by Platform
Rather than asking which is “best” overall, the right question is which is best for your specific use cases.
| Use Case | Best Platform | Why |
|---|---|---|
| Email drafting and comms | Gemini | Direct Gmail integration, context from your inbox |
| Document analysis (contracts, reports) | Claude | 200K token context, careful reasoning, fewer errors |
| Spreadsheet and data analysis | Gemini | Native Google Sheets integration |
| Content creation (blogs, social) | ChatGPT | Most versatile writing, image generation included |
| Code generation and debugging | Claude or ChatGPT | Both strong, Claude better for large codebases |
| Customer service automation | ChatGPT | Custom GPTs, API, widest integration library |
| Legal and compliance work | Claude | Most cautious, best at long document analysis |
| Presentations and visual content | Gemini or ChatGPT | Gemini for Slides, ChatGPT for standalone images |
| Research and fact-finding | ChatGPT | Web browsing, real-time information access |
| Internal knowledge base | All three | Upload company docs to any platform |
Which Platform Should UK Businesses Choose?
The decision comes down to three factors: your existing software ecosystem, your primary use cases, and your budget.
For more detail, see our Microsoft Copilot review guide.
For more detail, see our best AI chatbots for business guide.
Choose ChatGPT If
- You need the broadest range of capabilities in one tool
- Image generation is important (marketing teams, social media)
- You want to build custom AI assistants (custom GPTs) for different team functions
- Your team uses a mix of different software tools (not locked into one ecosystem)
Choose Claude If
- You work with long documents regularly (legal, consulting, finance)
- Accuracy matters more than speed (compliance, technical writing)
- You need to analyse large codebases or technical documentation
- You prefer more cautious, nuanced responses over confidently-stated approximations
Choose Gemini If
- Your business runs on Google Workspace (Gmail, Docs, Sheets, Drive)
- Budget is a primary concern (Google Workspace Starter is £5.90/user/month with AI features included; Google AI Plus is £6.99/month for individuals)
- Integration with existing tools matters more than raw AI capability
- Data residency in Europe is a strict requirement
Can You Use More Than One?
Many UK businesses use two platforms strategically. The most common combination is ChatGPT Plus for one or two power users (content creation, custom GPTs, research) alongside Google Workspace with built-in Gemini for the wider team (email, documents, everyday productivity). This typically costs less than rolling out ChatGPT Business to everyone while covering more use cases.
For specialised needs, adding Claude Pro for legal, compliance, or technical teams provides the long-context analysis capability that neither ChatGPT nor Gemini matches at the same price point. A three-tool approach (ChatGPT Plus + Claude Pro + Google AI Plus) costs roughly $40 plus £7 per specialist user per month – still less than a single hour of professional consulting time, and well below a full Pro tier on any one platform. For research-heavy roles where sourced, cited answers matter more than conversation, Perplexity AI is a cost-effective fourth addition at ~£16/month.
If you need help choosing the right AI tools for your business and implementing them effectively, our AI automation consultants can assess your workflows and recommend the most cost-effective approach.
