Model · Multimodal language model

Gemini 3.1 Pro Preview

A preview multimodal Gemini release served through Google's Gemini API and Vertex AI under Google's API terms, without downloadable model weights; active since February 2026 as the replacement for the shut-down Gemini 3 Pro Preview, with general availability still pending.

Developer
Google
Distribution
Developer API
Artifact licensing
Proprietary access
License scope
Reviewed release artifacts and mandatory terms; not an assessment of training code or training data openness.
Licenses
Gemini API Additional Terms of Service
Boundary
This record represents the preview release identified by the model code gemini-3.1-pro-preview (latest update February 2026; inputs text, image, video, audio, PDF; output text), together with its customtools endpoint variant for custom-tool-heavy agentic workflows. No shutdown date is announced and no stable successor ID exists. The retired gemini-3-pro-preview predecessor, the stable Flash line, image and audio-only releases, the Gemini consumer app, and the Vertex AI and AI Studio platforms themselves are separate model, service, or application boundaries.

Risk statements

Not yet examined.

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