What is Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview is Google's frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows.

What is the context length of Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview has a recorded input context length of 1,048,576 tokens.

What providers serve Gemini 3.1 Pro Preview, and can I use it via API?

Gemini 3.1 Pro Preview is available through the Phaseo API, with 4 active providers currently recorded. Recorded providers include Abacus, AtlasCloud, CrossModel, FastRouter, GMICloud, Google AI Studio, Google Vertex, and Inference and 11 more.

Does Gemini 3.1 Pro Preview support tool calling?

Yes. At least one active provider route for Gemini 3.1 Pro Preview currently advertises tool calling support. Provider support can vary, so requests are routed only to compatible routes.

Does Gemini 3.1 Pro Preview support structured outputs?

Yes. At least one active provider route for Gemini 3.1 Pro Preview currently advertises structured outputs support. Provider support can vary, so requests are routed only to compatible routes.