Modelpeers
GitHub Copilot characterClaude Opus 5 characterClaude Opus 4.8 character

Claude Opus 4.8, Opus 5 and GitHub Copilot

3 products from Anthropic and GitHub

Retiring

Takes effect Nov 16, 2026 · in 15 days

Copilot to remove Claude Opus 4.8, Claude Opus 5 and GPT-5.6 Terra on November 16

Copilot will deprecate Claude Opus 4.8 and Claude Opus 5 (replace with Claude Opus 5.5) and GPT-5.6 Terra (replace with GPT-6.1 Sol or GPT-6 Luna) on November 16, 2026. Opus 4.8 stays for individual annual-plan subscribers.

Who is affected:
Copilot users and integrations pinned to those models.
Action needed:
Move to the suggested alternatives before November 16, 2026.

Source

"We will deprecate the following models across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions) on November 16th, 2026:"

GitHub Changelog

Published

Open the sourcegithub.blog

Modelpeers tracks changes to AI agents and models, each from its source. Follow GitHub Copilot to get a weekly email when it changes.