MODELS
by Google
Google’s preview Gemini 3.1 Pro reasoning model for complex multimodal, coding, agentic, and long-context tasks.
Gemini 3.1 Pro is a Google preview reasoning model in the Gemini family. The supplied official Google and Google DeepMind sources describe it as intended for complex multimodal, coding, agentic, and long-context tasks, with API model ID gemini-3.1-pro-preview. Official resources include the Google DeepMind model page, a model card, Gemini API documentation, and Google Cloud Gemini Enterprise Agent Platform documentation.
Use Gemini 3.1 Pro when evaluating Google’s preview Gemini reasoning model for complex multimodal or long-context tasks. Use it for prototyping or comparing model behavior on coding and agentic workflows where the documented API model ID gemini-3.1-pro-preview is available. Review the official model card and Gemini API documentation before relying on it for production or safety-sensitive deployments.
Last updated Jul 31, 2026