MoonshotAI: Kimi K3.1 Pro

Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window.

Context
1.0M
Max output
944K
Input price
$2/1M tokens
Output price
$10/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode

Details

Model IDmoonshotai/kimi-k3.1-pro
Provider OpenRouter
Creator moonshotai
Familykimi-k3.1
License—
Status—
Typechat
Input modalitiestext, image, video
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output944K tokens
Reasoning tokens—
Knowledge cutoff—
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$2
Output
$10
Cache write
—
Cache read
$0.2
Batch in
—
Batch out
—

API

GET/v1/models/openrouter/moonshotai/kimi-k3.1-pro