GitHub is deprecating three AI models from GitHub Copilot on February 17, 2026: Claude Opus 4.1 (replaced by Claude Opus 4.5), GPT-5 (replaced by GPT-5.2), and GPT-5-Codex (replaced by GPT-5.1-Codex). Users should update workflows and integrations before this date. Enterprise administrators may need to enable alternative models through Copilot settings, while deprecated models will be automatically removed without user action required.
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