ChatGPT, Microsoft Copilot, Claude, and Google Gemini Compared
Artificial intelligence has moved from novelty to necessity for small businesses. Whether you are drafting proposals, summarising meetings, analysing data, or simply trying to get more done with a lean team, the right AI tool can save hours every week. The problem is that the market is noisy, the pricing is confusing, and the marketing from each platform is understandably self-serving.
This article cuts through that. We have compared the four most widely used AI tools used by UK small and medium-sized businesses: ChatGPT, Microsoft Copilot, Claude, and Google Gemini…
In this article we will be comparing price, free versus paid features, real-world usefulness, and practical tips for getting the most from each.
Please Note: All pricing is in GBP and correct as of publication 5th of May 2026. Always verify current pricing on each platform’s official UK website before purchasing.
1. ChatGPT (OpenAI)
Official website: chatgpt.com
ChatGPT is the most recognised name in AI and, with an estimated 700–900 million weekly users globally, it is the closest thing the industry has to a default choice. Built by OpenAI, it covers an enormous range of tasks: writing, research, coding, image generation, voice interaction, and data analysis.
ChatGPT – Free vs Paid
The free tier provides access to GPT-5.3, limited to roughly 10 messages every five hours before dropping to a lighter model. Since February 2026, free users in the US also see advertising — a direction of travel UK users should be aware of.
ChatGPT Plus costs approximately £18–£20 per month for UK users. OpenAI bills in USD at $20, and your bank converts this at the prevailing exchange rate, so the exact GBP figure varies slightly month to month. This plan unlocks the full model suite, Deep Research, image generation, Agent Mode, and an ad-free experience.
The Business plan is aimed at small teams and starts at approximately £16 per user per month at current exchange rates, with a minimum of two users. It adds shared workspaces, admin controls, SSO, and critically ensures your business data is not used to train OpenAI’s models by default — a relevant consideration for UK GDPR compliance.
For most small UK businesses, the Plus plan is sufficient for individual use. The Business plan becomes important once you have a team of two or more and are sharing client data or commercially sensitive content.
Top Tips for ChatGPT (OpenAI)
1. Use Custom GPTs to replicate your brand voice.
Plus and Business subscribers can create custom versions of ChatGPT pre-loaded with your tone of voice guidelines, product information, and communication style. This means every team member produces consistent output without re-briefing the tool every time.
2. Use Deep Research for competitive and market intelligence.
The Deep Research feature can autonomously browse, cross-reference, and summarise information from across the web. For small businesses without a dedicated research function, this replaces hours of manual work when reviewing competitors, scoping new markets, or preparing for client pitches.
3. Opt out of model training if you are on the Plus plan.
Free and Plus plans use your conversations to train OpenAI’s models by default, unless you manually opt out in Settings. Business and Enterprise plans exclude your data from training by default. If you are on Plus and handling client data, disable this immediately via Settings before using the tool for business purposes.
2. Microsoft Copilot
Official website: copilot.microsoft.com
Microsoft Copilot is the AI layer built directly into Microsoft 365. If your business runs on Outlook, Teams, Word, Excel, and PowerPoint, which describes the majority of UK SMEs.
Copilot is designed to work inside those tools as part of your existing workflow rather than as a separate application you have to switch to.
That native integration is its core advantage, and for businesses already invested in the Microsoft ecosystem, it is the most natural starting point for AI adoption.
Looking for tips on how to get the most out of AI / Microsoft Copilot? Check out our Getting Started Guide for Microsoft Copilot on our help centre.
Copilot – Free vs Paid
Microsoft includes a free Copilot Chat experience for users with eligible Microsoft 365 accounts, providing web-grounded AI chat and limited capabilities. Full Copilot integration inside Word, Excel, Outlook, Teams, and PowerPoint requires the paid Copilot Business add-on.
Microsoft 365 Copilot Business costs £13.80 per user per month at the current promotional rate, which runs until 30 June 2026, rising to £16.10 per user per month after that date. This is an add-on to an existing Microsoft 365 Business subscription — it cannot be purchased on a standalone basis.
On Microsoft 365 Business Standard at £9.60 per user plus Copilot Business at £13.80, the combined cost is £23.40 per user per month, excluding VAT. For a ten-person team that is approximately £2,808 per year before VAT — a meaningful investment that delivers best results when the team is properly onboarded and using Copilot consistently across the apps they work in every day.
If you are considering Copilot Business, it is worth acting before 30 June 2026 to lock in the promotional rate before standard pricing takes effect.
Top Tips for Microsoft Copilot
1. Start with Copilot in Outlook before rolling out elsewhere.
Email summarisation and reply drafting are where most users see immediate, tangible value. Getting your team comfortable here first builds confidence and demonstrates ROI before you expand to Teams, Word, and Excel. A phased rollout consistently outperforms deploying everything at once.
2. Use Copilot in Teams to capture meeting outcomes automatically.
Copilot can transcribe calls, generate meeting summaries, and produce a list of agreed actions without anyone taking manual notes. For small businesses without a dedicated administrator, this is one of the most practical time-savers in the entire suite.
3. Invest in a proper permissions review before deployment.
Copilot works by surfacing content from across your Microsoft 365 environment based on each user’s existing access rights.
Before rolling it out, it is worth auditing your SharePoint and OneDrive permissions to ensure documents are shared with the right people.
This is straightforward housekeeping that makes Copilot more accurate, more useful, and ensures your data governance remains clean — particularly relevant under UK GDPR.
3. Claude (Anthropic)
Official website: claude.ai
Claude is built by Anthropic, an AI safety company founded by former members of OpenAI. It has built a strong reputation among professionals for nuanced, long-form reasoning, careful instruction-following, and handling large documents without losing context. Where ChatGPT tends to be the generalist workhorse, Claude is often the tool people reach for when accuracy and depth of output matter more than speed.
Claude – Free vs Paid
The free plan requires no credit card and covers web, iOS, Android, and desktop access with text, image, and code generation, web search, and desktop extensions — subject to daily usage limits. Those limits are reached relatively quickly during a productive working day.
Claude Pro costs approximately £16 per month for UK users, billed at $20 USD with bank conversion applied. It delivers approximately five times the usage of the free plan, priority access during busy periods, and unlocks Projects — the ability to organise work into distinct contexts with their own documents, instructions, and persistent memory.
The Team plan costs approximately £20–£24 per user per month depending on exchange rates and billing cycle, with a minimum of five users. It adds centralised billing, admin controls, collaboration features, and a 200,000 token context window — meaning it can process very long documents or sustained, complex conversations without losing earlier context.
Top Tips for Claude (Anthropic)
1. Use Projects to build a persistent knowledge base for each client.
Unlike a standard chat session, Projects retain your instructions, documents, and context between conversations.
Load a client’s background and preferences once, and every subsequent interaction builds on that foundation — eliminating repetitive re-briefing and producing noticeably more relevant output.
2. Use Claude for document-heavy work.
If your business regularly handles contracts, reports, lengthy proposals, or compliance documentation — common across UK professional services — Claude’s handling of long documents is a genuine differentiator. You can upload an entire agreement and ask specific, precise questions about its contents rather than reading through it manually.
3. Use Claude for written communications where tone is critical.
Claude performs particularly well at adjusting the register and nuance of business writing. For proposals, complaints handling, or any correspondence where the wrong tone carries reputational risk, the quality and care of output tends to be more considered than other tools.
4. Google Gemini
Official website: gemini.google.com
Google Gemini is Google’s AI platform, and its core advantage is deep integration with Google Workspace — Gmail, Docs, Sheets, Slides, Meet, and Drive. If your business runs on Google’s ecosystem, Gemini is the natural AI counterpart. Google has also made a pricing decision that makes it particularly attractive for cost-conscious UK SMEs.
Gemini – Free vs Paid
The free tier runs on Gemini 2.5 Flash and handles the majority of everyday tasks competently. Unlike some competitors, Google does not heavily restrict what free users can do. However, free users do not get AI assistance inside Gmail, Docs, or Sheets — that requires a paid plan.
The most significant development for UK SMEs is Google’s bundling strategy. Google Workspace Business Standard costs £11.80 per user per month on an annual plan, excluding VAT. Gemini AI features — including the AI assistant in Gmail, Docs, Sheets, Slides, and Drive — are bundled in at no extra charge. Every user on the plan gets AI access with no separate licence required.
For individuals not on Google Workspace, Google AI Pro costs approximately £16 per month (billed at $19.99 USD), providing access to Gemini 2.5 Pro, Deep Research, and a one million token context window.
Top Tips for Google Gemini
1. If you are already on Google Workspace, activate Gemini today — it is already included.
Many UK businesses on Business Standard or above are not actively using Gemini despite it being part of their existing subscription. Enabling it in Gmail and Docs alone will deliver an immediate productivity return at no additional cost.
2. Use Gemini’s Deep Research for market, supplier, and competitor analysis.
Deep Research is one of Gemini’s strongest differentiators — it autonomously browses multiple sources and produces a structured report. For UK SMEs without a dedicated research function, this is a practical way to prepare for tenders, new business pitches, or supplier negotiations without spending hours on manual research.
3. Verify your data residency position if you operate in a regulated sector.
Google Workspace Business Standard stores data in EU/EEA data regions, which currently satisfies UK GDPR requirements for most businesses. However, if a client contract specifies UK-only data residency, it is worth confirming your position before committing. Legal, financial, and healthcare businesses in particular should check this with their data protection lead.
Which Tool Is Right for Your Business?
There is no single correct answer, and any recommendation that ignores your existing technology stack is not worth following. The honest decision framework for UK SMEs looks like this.
Microsoft 365 Users:
If you are an existing Microsoft 365 productivity suite user Copilot is the logical starting point. The integration benefit is real, particularly in Outlook and Microsoft Teams. Existing business users already living inside Microsoft 365, it’s the path of least friction.
Copilot pricing is around £23 per user per month exc VAT. We recommend you plan a phased rollout, and lock in the promotional offer before 30 June 2026.
Google Workspace Users:
If you are an existing Google Workspace user then Gemini is already included in your subscription from Business Standard upwards. Activate it today and invest the time saved into training your team to use it consistently.
General Purpose:
If you need a strong general-purpose AI and your stack is mixed or independent, we recommend ChatGPT Plus at approximately £18–£20 per month.
ChatGPT offers the broadest feature set and the largest ecosystem of integrations, tutorials, and third-party resources.
Complex Tasks:
You handle complex documents, nuanced writing, or need an AI that reasons with care we recommend Claude Pro at approximately £16 per month.
It’s worth evaluating, particularly for professional services businesses where the quality of written output carries commercial weight.
In practice, many UK SMEs end up using two tools: one embedded in their existing apps (Copilot or Gemini), and one for standalone tasks where output quality is the priority (ChatGPT or Claude).
Starting with one and expanding based on experience is the sensible approach, and the free tiers on all four platforms mean there is no financial barrier to testing before you commit.
All pricing is correct as of May 2026 and quoted excluding VAT. USD prices are converted to GBP at approximate current exchange rates and will vary. Always verify current pricing on each platform’s official UK website before purchasing. If you need help evaluating or deploying any of these tools for your business, contact Hixon Group.
