What is Project Polaris and how does it relate to GitHub Copilot?
According to reports, Project Polaris is an in-house coding model developed by Microsoft, unveiled at Build 2026 in June. It is reportedly designed to replace GPT-4 Turbo as the default model powering GitHub Copilot's code completions and suggestions across all subscriber tiers including Individual, Business, and Enterprise.
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Microsoft Just Replaced GPT-4 Inside GitHub Copilot With Its Own ModelProject Polaris, Microsoft's in-house coding model, is reportedly replacing GPT-4 Turbo as the default engine behind GitHub Copilot for all subscribers.
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More development best practices questions
- What architecture does Project Polaris use?
- How does Project Polaris perform compared to GPT-4 Turbo on coding benchmarks?
- Can teams still use GPT-4 Turbo in Copilot after the Polaris rollout?
- When did the Project Polaris rollout to Copilot subscribers begin?
- How many outage reports did Claude and ChatGPT get on July 14, 2026?
- What did Anthropic's own status page say about the July 14 Claude outage?
- Did Claude have more outages after July 14?
- What did ChatGPT's status checker say was wrong?
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