moonshot/kimi-k3.1-pro/chatKimi K3.1 Pro is Moonshot AI's flagship model, released on 23 October 2026 as the first model in its K3.1 series; Moonshot describes it as its most capable open-weight model to date. Here it is one OpenAI-compatible chat endpoint: up to 1,048,576 tokens of input, text, images and video in the messages, function calling, streaming, and a reasoning_effort of low, high or max on every request.
Workbench
These examples were written for this endpoint. Replace the prompt and sample media URLs with your own accessible inputs, then check the current quote and model availability before submitting.
- Input types
- Text
- Output types
- Text
- Input
- $2 / 1 million tokens
- Cached input
- $0.20 / 1 million tokens
- Output
- $10 / 1 million tokens
- Context
- 1,048,576
- Max output
- 1,048,576
$2/10per 1 million tokens · input / output
basic Use the 1,048,576-token input budget to keep a project brief, source extracts and implementation constraints in one conversation. For a financial review, identify each document and ask for the evidence behind each finding; for a software plan, request dependencies and a check for each milestone.
- 1024
- Input types
- Text
- Output types
- Text
- Input
- $2 / 1 million tokens
- Cached input
- $0.20 / 1 million tokens
- Output
- $10 / 1 million tokens
- Context
- 1,048,576
- Max output
- 1,048,576
$2/10per 1 million tokens · input / output
tool-step Attach a screenshot or video alongside the question it should answer; this endpoint does not accept audio. A tool call is a proposed operation: your application must validate and run it, then return its result with the matching tool_call_id. Keep the complete assistant turn when continuing the research.
- 1024
- auto
This example starts at Input $2 / Output $10 per 1 million tokens. The Playground updates the estimate when you change the settings.