MoonshotAI: Kimi K2 Thinking

Kimi K2 Thinking is Moonshot AI’s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning.

Context
262K
Max output
98K
Input price
$0.6/1M tokens
Output price
$2.5/1M tokens

Capabilities

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

Details

Model IDmoonshotai/kimi-k2-thinking
Provider OpenRouter
Creator moonshotai
Familykimi-k2
License—
Status—
Typechat
Input modalitiestext
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window262K tokens
Max input—
Max output98K tokens
Reasoning tokens—
Knowledge cutoff—
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$0.6
Output
$2.5
Cache write
—
Cache read
$0.15
Batch in
—
Batch out
—

Family Comparison: kimi-k2

ModelContextMax outPricing
MoonshotAI: Kimi K2 0711131K98K$0.57$2.3
MoonshotAI: Kimi K2 0905262K98K$0.6$2.5
MoonshotAI: Kimi K2 Thinking262K98K$0.6$2.5

API

GET/v1/models/openrouter/moonshotai/kimi-k2-thinking