# GitHub — Upcoming August 2026 model deprecations in GitHub Copilot

- Company: GitHub (github.com)
- Announced: 2026-07-31T21:26:48+00:00
- Category: deprecation
- Subject: Copilot
- Models affected: Gemini 3.1 Pro, Claude Opus 4.5, Claude Opus 4.6, Claude Sonnet 4.5, Claude Sonnet 4.6, Raptor Mini
- Source: https://github.blog/changelog/2026-07-31-upcoming-august-2026-model-deprecations-in-github-copilot
- Record: https://forck.live/items/3495-upcoming-august-2026-model-deprecations-in-github-copilot

GitHub will deprecate six models across all Copilot experiences on September 1, 2026, and provides suggested alternatives for each.

## Evidence

Verbatim from https://github.blog/changelog/2026-07-31-upcoming-august-2026-model-deprecations-in-github-copilot:

> We will deprecate the following models across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions), on September 1st, 2026:

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Record: https://forck.live/items/3495-upcoming-august-2026-model-deprecations-in-github-copilot
Catalogue: https://forck.live/llms.txt
Feed: https://forck.live/feed.md