GPT-6-Astra goes GA in GitHub Copilot the same day Codex adds it to Amazon Bedrock and makes it the bundled default
GitHub's 2026-09-04 changelog makes GPT-6-Astra generally available to Copilot Pro+, Max, Business and Enterprise across VS Code, Visual Studio, Copilot CLI, the Copilot coding agent, github.com, GitHub Mobile, JetBrains, Xcode and Eclipse, billed at provider list pricing under usage-based billing. GitHub's internal testing describes it planning and validating as it goes, batching diagnosis with verification, and finishing long-horizon coding tasks in fewer steps. Within hours, Codex rust-v0.153.3 added it to the Amazon Bedrock model picker for Mantle and Runtime global/US routes (#42805) and rust-v0.153.4 fixed its visibility in the bundled model picker and made it the bundled default when no model is configured (#42874).
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