Gemini 3.1 Pro, developed by Google, is the latest iteration in the Gemini 3 series of large language models, designed for advanced reasoning and complex problem-solving. Launched in public preview on February 19, 2026, it builds upon previous Gemini models, offering improvements in software engineering capabilities, token efficiency, and the introduction of a "MEDIUM" thinking level for optimized cost, performance, and speed. It is intended to help businesses solve complex challenges, visualize data, and handle tasks requiring deep context and planning.
Gemini 3.1 Pro can understand and process vast datasets from various sources, including text, audio, images, video, PDFs, and code repositories, leveraging a 1M token context window. It is accessible to developers and enterprises through the Gemini API in Google AI Studio, Google Antigravity, Vertex AI, Gemini Enterprise, Gemini CLI, and Android Studio. Consumers can access it via the Gemini app and NotebookLM, with enhanced limits for Google AI Pro and Ultra subscribers. Pricing for Gemini 3.1 Pro Preview is set at $2 per 1 million input tokens and $12 per 1 million output tokens for prompts under 200,000 tokens, with higher rates for longer prompts.
