Copilot Agent Sessions using GPT-5.3 Codex

[champnos]

🏷️ Discussion Type

Product Feedback

💬 Feature/Topic Area

Copilot in GitHub

Body

The Copilot coding agent recently changed its default model to GPT-5.3-Codex without notice. A single PR cost ~1,000 AI credits. There is no way to change the default model for chat-triggered agent sessions. This is unacceptable and I need either a cheaper default or user control over model selection

[github-actions[bot]]

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