GitHub Copilot: Streamlined Model Roster for Web Chat

GitHub Copilot: Streamlined Model Roster for Web Chat

GitHub has updated the available model selection for Copilot Chat on github.com, deliberately narrowing the roster to improve response quality and consistency across the web interface.

What Was Removed

All Gemini models have been removed from Copilot Chat on the web. Several additional models have also been retired from the web surface, including GPT-5.2 Codex and GPT-5.4 nano. The removal specifically targets the github.com web chat interface — IDE extensions (VS Code, JetBrains, Visual Studio) and GitHub Mobile are not affected by this change.

What Remains

OpenAI and Claude models across price points continue to be available through their respective Copilot plans. The web chat interface retains access to the OpenAI and Anthropic model families, which GitHub considers its most consistently performant options for the web surface.

GitHub's Rationale

GitHub stated that the goal is to "deliver more consistent, high-quality responses" and that limiting the available models allows the team to "consistently ensure reliable responses." The company also indicated that web chat will support a more limited set of new model rollouts going forward as performance standards are prioritized. This reflects a broader trend of GitHub curating its model catalog by surface rather than offering a uniform model picker across all Copilot entry points.

It is worth noting the contrast with the Gemini 3.5 Flash GA announcement made just one day earlier (May 19): while that model became generally available in Copilot across IDEs and GitHub Mobile, it did not make the cut for the web chat roster under this new curation policy.