Comparison, checked on 20 October 2026

Claude vs ChatGPT: which artificial intelligence (AI) suits your business

On an annual plan the licences cost the same. The difference is what the AI does inside your own systems, and who sets it up. That is why we recommend Claude to businesses.

Prices read online on 20 October 2026 from Anthropic's and OpenAI's UK pages.

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The comparison at a glance

LicenceClaude Team 15 GBP, ChatGPT Business 15 GBPPer person a month, billed annually.

The differenceWork inside your own systemsCowork in every licence, a connection to your accounts system, Claude inside Microsoft 365.

Who sets it upTen Claude Certified ArchitectsOur team sets Claude up for companies and builds AI agents on Claude.

01The answer

For work inside your own systems, we recommend Claude

For writing, summarising and answering questions, Claude and ChatGPT are on a par. Both have a plan for teams, and by default neither trains its models on business data.

The difference shows when the AI has to work inside the business: in shared folders, in Microsoft 365, in the accounts system. There Claude has tools we use every day on projects, listed below with their sources.

We work with Claude, so we are not a neutral observer. That is why every line names the vendor's page and the date we read it.

02Why Claude

Six reasons, from Anthropic's own pages

Each reason is a feature Anthropic publishes for Claude Team. Beside it, what we do with it on projects.

Whole tasks, not just questions

Cowork comes with every Claude Team licence (seat), standard and premium.
It works in the folders and tools you choose and hands the work back for review.
Scheduled tasks run on their own, even with the laptop closed.

Your systems, connected over MCP

In November 2024 Anthropic published the Model Context Protocol (MCP), the open standard that connects an AI assistant to business systems.
For Xero, Sage or your own system we build the connection, an MCP server, with the permissions you set. Claude Pilot A includes one.

Inside Microsoft 365

Claude for Microsoft 365 and Claude for Outlook are included in Claude Team; your Microsoft licence stays your own.
Claude works where your team already works, with no copying text between windows.

Long documents, in one request

Claude Team handles up to one million tokens of context, depending on the model.
Contracts, tenders and board minutes are read whole, not in pieces.

The same rules across the company

The administrator controls remote and local connectors.
The company's skills reach the whole team at once, with single sign-on (SSO) and central billing.

A process that runs in London

An AI agent on Claude can run on Amazon Bedrock in London (eu-west-2), in your own AWS account.
We build it for the process whose data you want kept in the UK.

03In common

Where they are the same

On these points the choice changes nothing. Better to know that first.

01The licence: the same 15 GBP a person a month on an annual plan.
02Business data: no model training by default, on both business plans.
03The minimum: Claude Team and ChatGPT Business both start at two users.
04Access: single sign-on and central administration on both.
05Personal plans: on both, your chats can train the models unless you switch it off.
06Who makes them: two US companies, Anthropic for Claude and OpenAI for ChatGPT.

04The cost

The licences, in pounds

Prices per person a month for the UK, read online on 20 October 2026. You pay the licences to the vendor, not to us.

Claude Team, standard seat15 GBPa month billed annually; 18.75 GBP billed monthly

Cowork, Claude Code and Claude for Microsoft 365 included
Premium seat: 75 GBP a month billed annually

ChatGPT Business, standard seat15 GBPa month billed annually; 18 GBP billed monthly

Premium seat: 75 GBP a month billed annually
Amounts excluding VAT, as OpenAI states them

A team of 10150 GBPClaude Team: 10 × 15 GBP a month

ChatGPT Business: 10 × 15 GBP = 150 GBP a month
The same total: the choice is about the work, not the price

All prices are in GBP and exclude VAT.

Every Claude plan, with the date we read it: Claude pricing in the UK.

05At work

A whole task, on one Claude Team licence

This is how a seat works in Cowork. Rachel asks, Claude reads Xero and drafts the chasers in Outlook; she decides and sends.

Claude · Cowork · Month endWalkthrough

Month endXero, read onlyOutlookCredit control notes.docx

Rachel, finance

Who is more than 30 days overdue in Xero? For anyone under 2,000 draft a polite chaser in our usual tone, and list the bigger ones for me to call.

Xero, read only: 41 invoices open; 6 more than 30 days overdue, 14,320.00 in total

Reading Credit control notes.docx: the firm's tone, and the rule of a chaser first, then a call

Claude

Six invoices are past 30 days. Four are under 2,000: Oakfield Joinery 1,240.00 (38 days), Mercer & Lowe 860.00 (34 days), Brightside Cafe 415.00 (45 days), Hallam Signs 1,980.00 (31 days). Two are larger and for your call: Northern Build Co 5,400.00 (52 days) and Fraser Interiors 4,425.00 (36 days). Drafting the four chasers now in the tone from your notes, each with the invoice number, the amount and the PDF attached.

Outlook: 4 drafts saved, one per customer, the invoice PDFs from Xero attached

Rachel, finance

Soften the Brightside one, they had a flood in September. Then I'll send them.

Person: read and decided

Claude

Rewritten: it acknowledges September and offers a payment date of their choosing within 14 days. The four are in your Drafts folder; nothing has been sent.

Rachel sent the four chasers at 10:12 and booked two calls

Ask Claude, or give it a task

Done in 28 s2 decisions by a person.

The overdue list in seconds instead of a morning; four chasers drafted in Rachel's voice; the two large ones held for her call. Nothing left Xero or Outlook without her.

What Claude used

ProjectMonth end

XeroRead only: 41 open

Overdue6 invoices, 14,320.00

Under 2,0004 chasers drafted

Drafts4 in Outlook, awaiting Rachel

Held for RachelNorthern Build Co, Fraser Interiors

Sent byRachel, 10:12

Walkthrough, not a recording. Names and figures are illustrative.

WalkthroughMonth endClaude Cowork, Xero (read only), Outlook

The overdue invoices in seconds, the chasers ready in Outlook. Nothing goes out without a person.

Rebuilt from real projects, not a recording.

06Your data

Where your data goes

It depends on how you use the AI: a licence for the team, an agent we build, or a personal plan.

A licence for the team

On Claude Team, Anthropic stores the data in the US; processing may also take place in Europe, Asia or Australia.
ChatGPT Business is not on OpenAI's data residency list, which is for eligible Enterprise, Edu and API customers.
Anthropic's data processing addendum is part of its commercial terms.

An AI agent we build

Claude runs on Amazon Bedrock in London (eu-west-2), in your own AWS account; Claude Opus 5.5 is served in the region.
The log of every action stays with you.

A personal plan

On Claude Free, Pro and Max, as on ChatGPT's individual plans, your chats can train the models unless you switch it off.
Company documents belong on the business plans.

The three layers of data with Claude, with sources: data security.

07Switching

From ChatGPT to Claude, one process at a time

You do not have to switch ChatGPT off on day one. Start with one process, measure the result, then decide.

The Workshop shows where Claude pays off, with the value and the cost of each process. Then Claude Team for the whole team with Pilot B, or a whole process handed to an AI agent in Pilot A.

You pay the Claude Team licences to Anthropic, separately. The final price of a pilot is in the written offer: it depends on the connectors, MCP servers and skills you need.

Step 1 · 2 weeksClaude Readiness WorkshopThe processes worth handing to Claude, the data and the rules. The price is credited against a pilot signed within 60 days.2,500 GBP
Step 2, option B · 30 daysClaude Pilot B: Claude Team for your teamThe base price covers the company account for the whole team, the existing connectors, three real tasks, the company's AI policy and two Claude ambassadors.from 12,500 GBP
Step 2, option A · 30 daysClaude Pilot A: an AI agent on ClaudeThe base price covers one process end to end, one channel, the existing connectors, one new MCP server and the skills.from 16,800 GBP

10Claude Certified Architects on our team, as of October 2026.

60%Fewer unanswered conversations for Salus Controls, from 35.6% to 14.3% in the first 30 days.The Sally case study

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08Questions

Frequently asked questions

Claude or ChatGPT: which is right for a business?

For chat and writing they are on a par. To have the AI work inside your own systems we recommend Claude: Cowork in every licence, an MCP server on your accounts system, Claude for Microsoft 365 included in Claude Team.

How much does Claude Team cost compared with ChatGPT Business?

Billed annually, both cost 15 GBP a person a month. Billed monthly, 18.75 GBP against 18 GBP. UK prices read on 20 October 2026.

Is our company data used to train the models?

On the business plans, not by default: both Anthropic and OpenAI say so. On personal plans it can be, unless you switch it off.

Can the data stay in the UK?

On Claude Team, no: Anthropic stores the data in the US. An agent we build on Amazon Bedrock in London runs in the UK. OpenAI offers data residency to eligible Enterprise and API customers, not to Business.

We already use ChatGPT: do we have to change everything?

No. Start one process on Claude, measure the result and decide. In the Workshop we tell you where it pays off and what it costs.

Who is Svennis?

A company that sets Claude up for businesses and builds AI agents on Claude. Ten Claude Certified Architects work on our team.

09Sources

Sources and dates

Every line comes from the two vendors' public pages.

Last reviewed 20 October 2026. Svennis is neither Anthropic nor OpenAI. Prices and terms can change: the vendor's page is what counts.

Anthropic and AWS sources

OpenAI sources

OpenAI, the ChatGPT pricing page for the UK and the price configuration it loads, with OpenAI's amounts excluding VAT, read 20 October 2026.
OpenAI, the business data privacy, security and compliance page, read 18 October 2026.

What is ClaudeWhat it does, which plan you need, where your data goes.Claude pricing in the UKAnthropic's UK list in pounds, with the date we read it.Data securityThe data flows with Claude, one by one.AI legal frameworkUK GDPR, the Data (Use and Access) Act and what applies to you.

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