News brief · About 1 min read
Copilot retires six older models and lists replacement choices
GitHub's October 19 notice maps retired Gemini, GPT and Grok options to supported alternatives within Copilot.
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GitHub says six models were deprecated across most Copilot experiences on October 19, following a September 18 advance notice. The scope includes Chat, inline edits, ask and agent modes, and code completions.
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At a glance
- Gemini 3.7 Flash is replaced by the suggested Gemini 3.8 Flash option.
- GPT-5.5 and GPT-5.4 point to GPT-6.1 Sol; GPT-5.4 mini and GPT-5 mini point to GPT-6 Luna.
- Grok 4.5 points to Grok 4.7.
- Enterprise administrators may need to enable replacement models in policy. Removing the retired models requires no action.
Why it matters
Workflows that explicitly select an older model should be reviewed alongside organization policy. Our interpretation is that a supported replacement name and permission to select it are separate migration checks.
Limits and availability
This notice concerns availability inside GitHub Copilot; it does not establish that the same providers' independent APIs have shut down. We did not verify access within individual accounts or compare replacement-model performance.
Sources and evidence
Source published: · Source checked:
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