GitHub Adds Claude Opus 5.5 to Copilot With Gradual Access

GitHub is adding Claude Opus 5.5 to GitHub Copilot with a promise of more efficient work on multistep tasks. But the evidence behind that pitch is GitHub’s early testing, and the model will arrive gradually rather than appearing for every eligible user at once.

The rollout gives Copilot Pro+, Max, Business, and Enterprise subscribers another selectable model across editors, command-line tools, GitHub’s coding agent, the Copilot app, and mobile. GitHub says Claude Opus 5.5 can handle agentic coding, long-running agentic tasks, and knowledge work.

A claim of efficiency, not an independent benchmark

GitHub says its early tests found Opus 5.5 resolved tasks comparably to Claude Opus 5 while using significantly fewer steps and tokens. It also says the model recovered quickly from errors in multistep work. Those results describe GitHub’s testing, rather than an independent comparison.

One option across Copilot’s main workspaces

The same model choice is scheduled to appear in Visual Studio Code, Visual Studio, Copilot CLI, GitHub Copilot coding agent, the Copilot app on github.com, GitHub Mobile, JetBrains IDEs, Xcode, and Eclipse. That range puts an option designed for lengthy agent work beside ordinary interactive coding tools, rather than confining it to a separate service.

Where the rollout is headed

• Editors and IDEs: Visual Studio Code, Visual Studio, JetBrains IDEs, Xcode, and Eclipse.
• Copilot tools: Copilot CLI, the coding agent, and the Copilot app on github.com.
• Mobile: GitHub Mobile on iOS and Android.

There is no promised date for universal availability. GitHub says the deployment is gradual and tells users who cannot yet see the model to check back later. For teams, that means the announced model choice may not be simultaneously available to every developer.

Enterprise access is a policy decision

Business and Enterprise administrators can manage access to Opus 5.5 through Copilot’s model policies. Under GitHub’s default model-enablement setting, new models are automatically enabled unless an administrator has turned off the global default or explicitly disabled this one.

Usage is billed at provider list pricing under Copilot’s usage-based billing. GitHub does not list a separate Copilot price for Opus 5.5 in the announcement.

Watermarking is built into the text output

GitHub says Claude Opus 5.5 watermarks its text outputs. According to GitHub, the watermark does not alter an output’s meaning, quality, or readability, and it does not add tokens or cost.