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GitHub schedules Copilot model retirements for October 19

GitHub says selected models will be deprecated across all Copilot experiences on October 19, 2026. The scope includes interactive assistance, agent modes and code completions, making this a migration issue across several development workflows.

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Key points

  1. GitHub sets October 19, 2026 as the deprecation date for selected Copilot models.
  2. The stated coverage includes Copilot Chat, inline edits, ask and agent modes, and code completions.

Why it matters

Teams using particular models should check dependencies across editing, chat and agent workflows. The shared retirement date makes replacement testing an immediate planning task, although the impact depends on which models are affected.

What to watch

Confirm the affected models, recommended replacements and migration guidance before October 19, including whether existing model selections will switch automatically.

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