Copilot News 09/18/2026 AI Rating: Low

GitHub Copilot to Deprecate Gemini 3.7 Flash, GPT-5.5/5.4, and Grok 4.5 in Mid-October

#GitHubCopilot#GitHub#ModelDeprecation#Gemini#Grok

GitHub announced a batch of model deprecations taking effect October 19, 2026 across all GitHub Copilot experiences.

Details

  • Deprecated models and their replacements: Gemini 3.7 Flash β†’ Gemini 3.8 Flash; GPT-5.5 β†’ GPT-5.6 Sol; GPT-5.4 β†’ GPT-5.6 Sol; GPT-5.4 mini β†’ GPT-5.6 Luna; GPT-5 mini β†’ GPT-5.6 Luna; Grok 4.5 β†’ Grok 4.6
  • Affected surfaces: Copilot Chat, inline edits, ask and agent modes, and code completions
  • Action needed: users should update workflows and integrations to use the supported models before the deprecation date
  • Enterprise handling: for Business and Enterprise customers, suggested alternatives activate automatically unless administrators have disabled default model enablement; deprecated models are removed automatically after the cutoff with no manual action required

What happened next

The deprecation batch is broader than GitHub’s typical single-model retirements, clearing out older Gemini, GPT, and Grok versions in one pass roughly six weeks ahead of the cutoff, giving teams a longer runway than usual to migrate workflows onto current-generation models.

Source https://github.blog/changelog/2026-09-18-upcoming-deprecation-of-selected-github-copilot-models-in-mid-october

Related Articles

More Copilot articles β†’
Copilot News 09/03/2026 Read AI Rating: Medium

GitHub Copilot to Deprecate Gemini 3.5/3.6 Flash, Kimi K2.7 Code, and Claude Opus 4.7 on October 2

GitHub announced the upcoming deprecation of Gemini 3.5 Flash, Gemini 3.6 Flash, Kimi K2.7 Code, and Claude Opus 4.7 across all Copilot experiences effective October 2, 2026, pointing users to newer replacement models.
Copilot News 08/31/2026 Read AI Rating: Medium

GitHub Copilot Deprecates Gemini 3.1 Pro, Claude Opus/Sonnet 4.5/4.6, and Raptor Mini

As of September 1, 2026, GitHub Copilot deprecated Gemini 3.1 Pro, Claude Opus 4.5/4.6, Claude Sonnet 4.5/4.6, and Raptor Mini across chat, inline edits, and code completion, pointing users to newer replacement models.
Copilot News 09/10/2026 Read AI Rating: Low

GitHub Copilot Deprecates MAI-Code-1-Flash

GitHub deprecated the MAI-Code-1-Flash model across all Copilot experiences effective September 10, 2026, directing users to MAI-Code-1.1-Flash and requiring enterprise admins to enable the replacement through model policies.
Copilot News 10/02/2026 Read AI Rating: Low

GitHub Deprecates Gemini 3.5/3.6 Flash, Kimi K2.7 Code, and Claude Opus 4.7 in Copilot

GitHub deprecated four models across all GitHub Copilot experiences as of October 2, 2026 β€” Gemini 3.5 Flash, Gemini 3.6 Flash, Kimi K2.7 Code, and Claude Opus 4.7 β€” recommending Gemini 3.8 Flash, Kimi K3, and Claude Opus 5.5 as replacements.