gemini 3.1 pro and 3.5 flash land across copilot
github's changelog quietly added google's gemini 3.1 pro (preview) and 3.5 flash to copilot CLI, the cloud agent, the copilot app, and the SDK. copilot keeps becoming a model marketplace — which is the most interesting thing about it.
per github's june 2 changelog, two gemini models — gemini 3.1 pro (preview) and gemini 3.5 flash — are now available across more copilot surfaces: the CLI, the cloud agent, the copilot app (technical preview), and the SDK.
copilot the marketplace
on its own this is a routine model-menu update. in context it's the strategy showing: in the same week microsoft shipped its own MAI coding models into copilot, it also widened the shelf for google's. copilot increasingly looks less like a product with a model inside and more like a distribution layer that sells whoever's model is winning this quarter— anthropic's, openai's, google's, or its own.
for builders, the practical takeaway is the same one we keep arriving at: model loyalty is a liability; workflow loyalty is the asset. the prompts, the verification habits, the taste — those transfer. the model dropdown changes monthly. learn the craft (the guides desk exists for exactly this), and let the vendors fight over who runs your tokens.