GitHub Copilot to Deprecate Older AI Models on October 2, 2026
GitHub will officially sunset selected older-generation AI models on October 2, 2026, across all GitHub Copilot features. This deprecation affects all user touchpoints, including Copilot Chat, inline editing, agent mode, and standard code completion. Organizations relying on these legacy models must transition their developer workflows to newer supported models prior to this date to ensure uninterrupted service.
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| Aspect | Before / Alternative | After / This |
|---|---|---|
| Default AI Model Availability | Older-generation models remained active and selected as defaults in some environments. | Legacy models are entirely removed; only active, modern models are supported. |
| Organization Policy Settings | Administrators could permit outdated models for chat and code completion features. | Administrators must enable access policies for supported newer models. |
| API and Custom Integrations | Custom scripts and integrations hardcoded to legacy model endpoints functioned normally. | Hardcoded references to deprecated models fail, requiring updates to modern model endpoints. |
Action Checklist
- Identify all Copilot configurations using older-generation models across the organization. Focus on Copilot Enterprise and Copilot Business management dashboards.
- Update Copilot administration policies to enable newer supported models. Verify that team members can select these updated models in their IDE chat interfaces.
- Audit and update API integrations or custom scripts referencing specific model identifiers. Any hardcoded legacy model names will cease to work after the October deadline.
- Contact your dedicated GitHub Enterprise account team if you have unique infrastructure requirements. Do this well in advance of the October 2, 2026 deprecation date.
Source: GitHub Changelog
This page summarizes the original source. Check the source for full details.
