From the source
GitHub made Gemini 4 Argon generally available in Copilot for Pro+, Max, Business, and Enterprise users, with gradual rollout across multiple IDEs and tools.
Gemini 4 Argon in GitHub Copilot
Gemini 4 Argon now generally available in Copilot
Availability change
From the source
Gemini 4 Argon, Google’s newest frontier model, is now generally available in GitHub Copilot. It is designed for complex coding, agentic, and reasoning tasks.
github.blog
