# kimi-k3.1-pro

> The first model of the new K3.1 series and Kimi's most capable flagship to date: a 3T-class model with native visual understanding and a 1M-token context window, delivering substantial improvements in coding, 3D creation, and financial research and modeling.

## Key facts

- Model author: Moonshot AI
- Price: from $2.00 per 1M input tokens and $10.00 per 1M output tokens (tiered; this is the starting tier)
- Context length: 1M tokens
- Maximum output: 1M tokens
- Input modalities: Text, Image, Video
- Output modalities: Text
- Capabilities: Reasoning, Tool use
- Model IDs: `moonshotai/kimi-k3.1-pro`
- Model page: https://www.realrelay.ai/model/moonshot-ai/kimi-k3.1-pro
- API base URL: https://www.realrelay.ai/v1 (OpenAI-compatible)

## How to call it

RealRelay.ai serves kimi-k3.1-pro through one OpenAI-compatible API. Send a RealRelay.ai API key and set the `model` field to `moonshotai/kimi-k3.1-pro`.