MoonshotAI: Kimi K3.1 Pro

Kimi K3.1 Pro is a paid model from Moonshot AI that accepts text, image, and video input. It offers a context window of 1,048,576 tokens and allows up to 943,718 completion tokens, so very long documents and lengthy outputs can fit in a single request. It supports tool use and reasoning. Structured output support and weight availability are not listed, so confirm both before relying on them. At $2 per million input tokens and $10 per million output tokens, it fits teams that need multimodal input, long context, and tool calls in one model and can budget for output-heavy workloads. Its blended benchmark score of 95.1 comes from a single independent benchmark, with an AI Index score of 90.9. That is a high result, but the coverage is thin. Treat its standing as preliminary and run your own evaluations against alternatives before committing.