Which AI Should You Pay For in 2026? ChatGPT vs Claude vs Gemini Compared

Three companies want about £20 a month from you for roughly the same promise: a clever assistant that writes, researches and gets work done. Most people pick one because a friend did, pay for a year and never check what the other two would have given them. That is an expensive way to choose. The cheapest paid plan in this comparison costs less than a fiver, and the free ones are now good enough for many small businesses.

This guide puts ChatGPT vs Claude vs Gemini side by side on the things that decide whether a subscription is worth it: the price you pay in the UK, what the free plan really includes, how fast you hit a limit, and which kinds of work each one is good at. Prices were read on 4 October 2026. If you are new to all of this, the plain-English guide to chatbots and agents explains the terms first.

How we compared them

1. Prices from the companies' own pages. Claude and Google prices were read on their pricing pages on 4 October 2026. ChatGPT's page would not load for our check, so its figures come from a UK price tracker dated 29 September 2026 and from OpenAI's own announcements.
2. UK prices where they exist. Google publishes pound prices. Anthropic bills Claude in US dollars, and OpenAI adds VAT at checkout, so those are shown as dollars with an approximate pound figure.
3. Limits as the companies describe them. We quote the published multipliers and windows instead of guessing at message counts.
4. Opinion marked as opinion. Which one "feels" best is a matter of taste. Where we give a view, we say why.

The 13 plans side by side

The short answer

• You want one subscription and no thinking. ChatGPT Plus. It has the widest set of features in one place: chat, images, video, an agent mode and coding tools, with no adverts.
• You write for a living, or you read long documents. Claude Pro. Projects, long careful drafts and tools such as Claude Code and Claude in Microsoft 365 are where it earns its fee.
• Your business runs on Gmail, Docs and Drive. Google AI Plus at £4.49, then Pro if you outgrow it. Nothing else here puts the assistant inside your inbox and documents for under a fiver.
• You are not sure yet. Pay nothing. All three free plans are usable, and a week of real work on each will tell you more than any review.

What each one is actually good at

ChatGPT: the all-rounder that now carries adverts

ChatGPT is the default for a reason. It was first, it does most things competently, and nearly every tutorial online assumes you are using it. The change in 2026 is the business model. OpenAI launched the Go plan worldwide in January 2026, and it now shows adverts to logged-in adults in the UK on the Free and Go plans. Plus and above stay advert-free.

That makes the decision simpler than it looks. If adverts in a work tool bother you, Go is not a saving. Plus is the first plan that feels like a professional product, and it is the one to compare against Claude Pro and Google AI Pro. Our 25 ChatGPT tips show how to get more from whichever plan you are on.

Claude: the careful writer

Claude's reputation is for tone and patience. It is the one people reach for when a draft has to sound like a person wrote it, or when a 90-page contract needs reading properly. The Pro plan, at $20 a month or $17 on annual billing, gives at least five times the free usage per session and adds Claude Code, scheduled tasks and the Chrome and Microsoft 365 integrations.

The thing to know before you pay is how Claude counts. Usage runs in five-hour sessions with a weekly cap on top, and a long afternoon with big files can reach it. If that sounds familiar, the guide to usage limits and seven ways round them explains the mechanics.

Gemini: the value pick, if you live in Google

Gemini's strength is where it sits. On a paid Google AI plan it works inside Gmail and Docs, and the plan includes the cloud storage you may already be paying for. Google AI Plus is £4.49 a month with 400 GB of storage. Google AI Pro is £18.99 with 5 TB and a context window large enough for about 1,500 pages.

The free plan is generous too: Deep Research, Live voice conversations and Canvas are all included. Its limit is the small context window, which means long documents get cut short. If your work is mostly email, documents and the odd research task, Plus is hard to beat on price.

The limits nobody reads

Every plan here is metered, and the meters work differently:

• ChatGPT measures paid usage against a weekly allowance, with Pro tiers sold as multiples of Plus.
• Claude uses five-hour sessions and a weekly cap. Max is sold as 5 or 20 times Pro.
• Gemini refreshes its limits every five hours until a weekly cap is reached. Plus is twice the free limit, Pro four times.
• Jobbit uses credits: 100 a day on the free plan, or a monthly pool of 2,000 on Go that you can spend whenever the work arrives.

None of them is unlimited. The practical question is whether the limit resets while you are still working. Our ranking of chat plans by message limits goes through 18 of them.

Do you need to pick one at all?

The three models have different strengths, and those strengths change every few months as each company ships a new version. Paying £20 to one of them locks you to this month's winner. The other route is a tool that sits above the models. On Jobbit you choose the model per task in the same chat: Claude for the careful letter, GPT for the spreadsheet formula, Gemini for the long report. Paid plans start with Go at £7 a month, and the model picker guide shows how it works.

There is a second difference. ChatGPT, Claude, Gemini, Microsoft Copilot, Manus and Meta's Muse are built first as assistants you talk to. An agent is built to finish the job: research with sources, a document you can send, a website that is live when it says it is done. If the reason you want AI is "get this off my desk", compare what agents cost before you compare chatbots.

A five-question test that picks for you

1. Where do you already work? Google Workspace points to Gemini. Microsoft 365 points to Claude or Copilot. Neither points to ChatGPT.
2. What do you do most: write, research or make things? Writing and reading favour Claude. Images and video favour ChatGPT and Gemini. Whole tasks favour an agent.
3. Will adverts bother you? If yes, skip ChatGPT Free and Go.
4. How long are your documents? Over 50 pages rules out most free plans.
5. Is this for one person or a team? Teams need the business plans, which cost more per seat and keep your data out of training by default.

Then run the same real task on two free plans before you pay for either. Ten minutes of your own work beats any benchmark.

Mistakes that waste the subscription

• Paying for a year on day one. Annual billing can save around 15%, but only once you know you will use it.
• Buying the top tier "to be safe". Few people who are not coding all day reach the limits of a £20 plan.
• Pasting customer data into a personal plan. Check the training settings first. The guide to AI safety lists the seven things never to paste.
• Keeping three subscriptions. If you are paying £60 a month to compare answers, a single tool with a model picker does the same for less.

Frequently asked questions

Which is better, ChatGPT, Claude or Gemini?

None of them wins everywhere. ChatGPT has the broadest features, Claude is the strongest for careful writing and long documents, and Gemini is the best value if you already use Gmail and Google Docs. The right one is the one that fits where you work.

Is ChatGPT Plus worth it in 2026?

If you use ChatGPT most days, yes: it removes adverts and adds the full model range, agent mode and video. If you use it a few times a week, the free plan or Go is enough.

Is Gemini free?

Yes. The free plan includes Deep Research, Live voice chat, Canvas and image generation. Paid plans start with Google AI Plus at £4.49 a month, which doubles the limits and adds Gemini in Gmail and Docs.

What is the cheapest paid AI plan?

Google AI Plus at £4.49 a month, then ChatGPT Go at about £6 to £7 with adverts, then Jobbit Go at £7 with no adverts and a choice of models.

Can I use Claude, GPT and Gemini without paying for all three?

Yes. A tool with a model picker lets you choose the model for each task under one plan. Jobbit does this from its Go plan at £7 a month, and its free plan gives you 100 credits a day to try it.