Pricing, Performance & Features Comparison
Gemini 3.1 Pro is the next iteration in the Gemini 3 series of highly capable, natively multimodal reasoning models. As Google's most advanced model for complex tasks, it can comprehend vast datasets and challenging problems from sources including text, audio, images, video, and entire code repositories with a 1M token context window. Built to refine the performance and reliability of the Gemini 3 Pro series, it provides better thinking, improved token efficiency, and a more grounded, factually consistent experience.
GPT-5.3-Codex is OpenAI's most capable agentic coding model, combining frontier coding performance with the reasoning and professional knowledge capabilities of GPT-5.2 in a single model that is 25% faster than GPT-5.2-Codex. It is designed to handle long-running tasks involving research, tool use, and complex execution, enabling it to perform nearly any task a professional can do on a computer, from debugging and deployment to creating spreadsheets and presentations.