https://ai.google.dev/gemini-api/docs/deprecations
That link shows 3.1 pro listed as deprecated with no replacement model.
No, that's the "preview" version (gemini-3.1-pro-preview) aka the beta/early version before the official release of 3.1 Pro.
alt Hacker News
No, that's the "preview" version (gemini-3.1-pro-preview) aka the beta/early version before the official release of 3.1 Pro.