Claude vs Copilot: Claude Now Runs Inside Both Copilots

“Microsoft enables Anthropic models on by default for most customers in commercial cloud (excluding EU/EFTA and UK),” reads Microsoft’s Learn page on Anthropic models, last updated 18 September 2026 and read on 31 October 2026, and it names Microsoft Copilot, Researcher, Copilot Studio and Copilot in the Microsoft 365 apps. With 11 more Claude models listed in GitHub Copilot’s supported-models reference, Claude vs Copilot means picking one of three routes to Claude: Anthropic’s own app and Claude Code, Microsoft Copilot at work, or GitHub Copilot.

My advice is to start from the subscription you already have, because four things change from one route to the next: who pays, who has to switch Claude on, what Claude can see once it is on, and which agent does the work. Every row below comes from Anthropic’s, Microsoft’s or GitHub’s own pages as read on 31 October 2026, and all three change their prices and model lists often, so check again before you buy.

Routes to Claude at a glance, as of 31 October 2026:

Sources: Claude pricing, Claude Code docs, Microsoft Copilot pricing, the Microsoft Copilot Blog of 30 September 2026, GitHub Copilot plans and GitHub’s third-party agent docs. For every Claude plan from Free to Enterprise, with usage multiples and API credits, see my guide to the Claude plans.

Is Claude Better Than Copilot?

Neither is better across the board: Claude models now run inside Microsoft Copilot and GitHub Copilot, so the choice is which route to Claude fits your work. Anthropic’s own app and Claude Code give you every Claude feature on a plan you control; Microsoft Copilot puts Claude next to your organization’s mail, meetings and files; GitHub Copilot puts Claude next to your repositories.

Everything I say about the two Copilots comes from Microsoft’s and GitHub’s documentation, and nothing here is a benchmark or a quality score. If you are weighing Claude against OpenAI’s assistant instead, my Claude vs ChatGPT comparison for marketing work runs that exercise job by job.

Name Your Copilot First

Microsoft sells Copilot as a free app, home plans, a chat included with work licenses and paid business add-ons, and only some of them reach Claude. Microsoft’s Copilot overview, updated 28 October 2026, says “Anthropic subprocessors are available only in applicable Microsoft 365 licensed experiences and aren’t available to all users by default”, and it lists GitHub Copilot as a separate product licensed by your work organization. My map of which Copilot edition you have and what it costs sorts out the Microsoft side; this post covers only the routes that reach Claude.

Claude in Microsoft Copilot: Who Has to Switch It On

Your admin holds the switch, and where your tenant sits decides its starting position. From Microsoft’s Anthropic models page:

• On by default for most commercial cloud customers outside the EU, EFTA and UK.
• Off by default in the EU, EFTA and UK. The setting shows “No users”, and Anthropic models are “currently excluded from the EU Data Boundary”. To opt in, someone with the AI Administrator or Global Administrator role goes to Microsoft 365 admin center > Copilot > Settings > View all > AI providers operating as Microsoft subprocessors, selects Anthropic, saves, then picks the users or groups. A separate setting added on 3 April 2026 lets admins there make Anthropic the default model for Copilot in Microsoft 365 apps.
• Government clouds. Non-federal GCC customers got a setting on 22 July 2026; Anthropic models are not available for federal GCC customers, GCC High, DoD or other sovereign clouds.
• Fable-class models. For certain organizations, Fable 5.1 runs with Anthropic as a subprocessor under Microsoft’s Product Terms and DPA, with no extra terms and no retention of customer content by Anthropic.
• Data Retention models. Other advanced models such as Claude Fable 5 and Claude Mythos 5 come as “Anthropic models with Data Retention” and are “off by default for all scenarios”. Turning them on means accepting Anthropic’s commercial terms, and Anthropic “stores most inputs and outputs for up to 30 days before deleting them”.
• Where users pick Claude. Microsoft Copilot shows UI indicators when Claude models are in use, and in Edit with Copilot in Microsoft 365 apps or in Researcher “users can select Claude”.

Once Claude is on, Microsoft’s blog says Work IQ grounds answers in “your organization’s files, meetings, chats and business data, within your existing permissions”. Limits apply on top of the license. It also says Claude Sonnet 5.5 rolls out to Word, Excel, PowerPoint and Chat “as part of the user subscription license (USL)”, with limits under which users “are warned as they approach a limit” and can switch to Auto, the default mode in which Microsoft’s router picks the model.

Claude in GitHub Copilot: Which Plan Gets Which Model

GitHub’s supported-models reference has a per-plan table, and it agrees with the plans page on which paid tier gets Opus and Fable. As read on 31 October 2026:

Points from the same docs page:

• Free and Student: “Copilot Student and Copilot Free users have access to models through auto model selection only”, so you cannot pick a Claude model on either. Students in India have other Claude routes, which my guide to every Claude option for a student in India maps.
• Sonnet 4.6 “was retired on September 1, 2026” but stays for individual subscribers on annual plans.
• On Business and Enterprise, Fable 5 and Fable 5.1 sit outside GitHub’s data retention agreement and are disabled by default; an administrator “must still enable each model before users can access it”.
• Usage draws on GitHub AI Credits; GitHub’s plans page says “1 AI credit = $0.01 USD” and that usage varies by model.

GitHub’s own pages disagree in three places, and I would plan around the Docs:

Claude vs GitHub Copilot for Coding

For coding, the comparison is Copilot vs Claude Code, and both now run Claude models. The difference is where the work happens and how it is billed.

Decision rules from those rows:

• Already on Copilot Pro and happy with Sonnet: you already have Claude in your editor. Opus needs Pro+.
• Want Claude Code itself, with its own sessions, memory and commands: Anthropic’s docs say most of its surfaces “require a Claude subscription or Anthropic Console account”. GitHub describes its Claude agent as built on the Claude Agent SDK and billed to your Copilot plan.
• Want Copilot models in a different harness: OpenCode signs in with a GitHub Copilot account, and what OpenCode accepts that Claude Code does not has the provider list.

I build and maintain this site with Claude Code in VS Code, and the setup behind it is documented with the jobs it does. Nothing in this post compares the two from use; the Claude Code rows come from Anthropic’s docs.

Claude vs Copilot in Excel

Two different products put Claude in Excel, and they come from different vendors.

If your company already pays for a Copilot license with Claude switched on, try Claude inside Copilot in Excel first. If you work on your own, Claude for Excel comes with any paid Claude plan and needs no Microsoft 365 admin.

Is Claude Cheaper Than Copilot?

At the entry level, GitHub Copilot Pro at $10 a month costs less than Claude Pro at $20 for picking a Claude model, but it stops at Sonnet and Haiku. The comparison by model tier, as of 31 October 2026:

Every Claude, Microsoft and GitHub price here is in USD before tax. Heavy use costs more on all three: Claude’s plans have five-hour and weekly limits, Microsoft bills Copilot Cowork by usage, and GitHub draws AI Credits past your allowance.

Copilot vs Claude by Reader

Claude vs Copilot: Start From What You Already Pay For

With Claude models inside Microsoft Copilot and GitHub Copilot, Claude vs Copilot comes down to the subscription you already have and who controls it. If your employer or GitHub plan already pays for Copilot, open its model picker and look for Claude before you buy a second subscription. If you pay for nothing yet and work alone, Claude Pro is the entry plan that includes Claude Code and Claude for Excel without an admin.