GitHub makes GPT-5.3-Codex the default Copilot enterprise model
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GitHub promoted GPT-5.3-Codex to the default model for Copilot Business and Enterprise, tying enterprise coding workflows to a one-year long-term support window.
AI
2026-05-17
GitHub makes GPT-5.3-Codex the default Copilot enterprise model
The change matters because enterprise buyers care about model stability as much as raw benchmark gains. By making a Codex model the default with an LTS promise, GitHub is positioning coding agents less like experimental assistants and more like governable software infrastructure for large organizations.
Source: GitHub