GitHub Copilot models deprecated on October 19, 2026

GitHub deprecated six models across most Copilot experiences — Copilot Chat, inline edits, ask and agent modes, and code completions — as of October 19, 2026, following an announcement on September 18, 2026. The retired models are Gemini 3.7 Flash, GPT-5.5, GPT-5.4, GPT-5.4 mini, GPT-5 mini and Grok 4.5, with GitHub directing users to Gemini 3.8 Flash, GPT-6.1 Sol, GPT-6 Luna and Grok 4.7 as replacements. Copilot Enterprise administrators may need to enable access to the alternative models through model policies in Copilot settings, while no action is required to remove the deprecated models.

GitHub Copilot models deprecated on October 19, 2026 As of today, October 19, 2026, we have deprecated the following models across most GitHub Copilot experiences including Copilot Chat, inline edits, ask and agent modes, and code completions . These deprecations were announced on September 18, 2026 https://github.blog/changelog/2026-09-18-upcoming-deprecation-of-selected-github-copilot-models-in-mid-october/ . | Model | Deprecation date | Suggested alternative | |---|---|---| | Gemini 3.7 Flash | 2026-10-19 | Gemini 3.8 Flash | | GPT-5.5 | 2026-10-19 | GPT-6.1 Sol | | GPT-5.4 | 2026-10-19 | GPT-6.1 Sol | | GPT-5.4 mini | 2026-10-19 | GPT-6 Luna | | GPT-5 mini | 2026-10-19 | GPT-6 Luna | | Grok 4.5 | 2026-10-19 | Grok 4.7 | Please update your workflows and integrations to use supported models. Copilot Enterprise administrators may need to enable access to alternative models through their model policies in Copilot settings. As an administrator, you can verify availability by checking your individual Copilot settings and confirming that the policy is enabled for the specific model. Once enabled, you’ll see the model in the Copilot Chat model selector in VS Code and on github.com. No action is required to remove the deprecated models. GitHub Enterprise customers with questions or concerns are encouraged to reach out to their account manager for further assistance. Share your feedback share-your-feedback To learn more about the models available in Copilot, see our documentation on models https://docs.github.com/copilot/reference/ai-models/supported-models?utm source=model-release-announcement&utm medium=changelog&utm campaign=newmodels and get started with Copilot today. Join the GitHub Community https://github.com/orgs/community/discussions/categories/copilot-conversations?utm source=model-release-announcement&utm medium=changelog&utm campaign=newmodels to share your feedback.