Upcoming deprecation of Opus 4.6 (fast)
We will deprecate Opus 4.6 (fast) across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions), on June 29th, 2026: Model Deprecation date… The post Upcoming deprecation of Opus 4.6 (fast) appeared first on The GitHub Blog.
Overview
We will deprecate Opus 4.6 (fast) across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions), on June 29th, 2026:
| Model | Deprecation date | Suggested alternative |
|---|---|---|
| Opus 4.6 (fast) | 6-29-2026 | Opus 4.8 (fast) |
Please update your workflows and integrations to use the supported model before these dates. Copilot Enterprise administrators may need to enable access to the alternative model 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 model once it has been deprecated.
GitHub Enterprise customers with questions or concerns are encouraged to reach out to their account manager for further assistance.
Share your feedback
To learn more about the models available in Copilot, see our documentation on models and get started with Copilot today.
Details
Join the GitHub Community to share your feedback.
Cookie Preferences
The post Upcoming deprecation of Opus 4.6 (fast) appeared first on The GitHub Blog.
Source
Originally published at github.blog.
