Summary
On September 4, 2026, GitHub made OpenAI's GPT-6 Astra generally available in GitHub Copilot for Pro+, Max, Business, and Enterprise users. GitHub positions the model for long-horizon, autonomous coding and agentic tasks, with a gradual rollout and admin-managed access.
What changed
GitHub added GPT-6 Astra as a selectable model across Copilot for Pro+, Max, Business, and Enterprise. GitHub says the model plans and validates as it works, batching diagnosis with verification and confirming results before declaring a task done. Copilot Enterprise and Business admins can manage access through the model policy in Copilot settings.
Why it matters
Copilot put OpenAI's newest frontier model into a major coding surface the same day OpenAI opened GPT-6 Astra broadly, and just days after adding Claude Fable 5.1 and Gemini 3.8 Flash. It shows how quickly frontier models now reach production developer tools and reinforces Copilot's multi-vendor, admin-governed model strategy.
Evidence excerpt
"GPT-6 Astra ... is designed for long-horizon, autonomous coding and agentic tasks." Available to Copilot Pro+, Max, Business, and Enterprise; rollout is gradual and Enterprise/Business admins manage access via the model policy in Copilot settings.