Kimi K2 Thinking

Moonshot AIMCP Tool CallReasoning
moonshotai/kimi-k2-thinkingOpen Weights

Thinking Kimi model for slower research passes, planning, and hard technical questions

Benchmark Pricing$0.60 / 1M in$2.50 / 1M out$0.15 cache read
Context: 262,144 tokens•Max Output: 262,144 tokens•Knowledge: 2024-08•Released: 2025-11-06

TECHNICAL SPECIFICATIONS

Context Window262,144262.1K tokens
Max Output262,144262.1K tokens
LicenseOpen SourceSelf-hostable
Input Modalities
Text
Function / Tool CallingSupported (MCP Ready)
Structured OutputsGuaranteed Schema

MODEL CONTEXT PROTOCOL (MCP) READINESS

✓ Kimi K2 Thinking natively supports OpenAI / Anthropic format tool calling and is fully compatible with MCP servers and agent loops.

MCP Context Window Recommendations

With a context capacity of 262,144 tokens, this model can handle moderately large MCP tool definitions and multi-turn conversation logs comfortably.

STANDARDIZED BENCHMARKS & EVALS

SWE-Bench Verifiedresolved
71.3

API CALL INVOCATION EXAMPLE

// Example: Calling Kimi K2 Thinking via OpenAI SDK
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.MOONSHOTAI_API_KEY,
});

const response = await client.chat.completions.create({
  model: "moonshotai/kimi-k2-thinking",
  messages: [{ role: "user", content: "Hello! Can you inspect MCP tools?" }],
});

console.log(response.choices[0].message.content);

PRICING BY PROVIDER

15 providers
NanoGPTmoonshotai/kimi-k2-thinking
$0.60 / $2.50$0.15 cache
Charm Hyperkimi-k2-thinking
$0.60 / $2.50$0.30 cache
Meganovamoonshotai/Kimi-K2-Thinking
$0.60 / $2.60
Novita AImoonshotai/kimi-k2-thinking
$0.60 / $2.50$0.15 cache
IO.NETmoonshotai/Kimi-K2-Thinking
$0.60 / $2.50$0.30 cache
302.AIkimi-k2-thinking
$0.57 / $2.30
AI/ML APImoonshotai/kimi-k2-thinking
$0.83 / $3.44$0.21 cache
OpenCodekimi-k2-thinking
$0.40 / $2.50$0.40 cache
Eden AIamazon/moonshot.kimi-k2-thinking
$0.60 / $2.50
Merge Gatewaymoonshotai/kimi-k2-thinking
$0.60 / $2.50
Amazon Bedrockmoonshot.kimi-k2-thinking
$0.60 / $2.50
Kilo Gatewaymoonshotai/kimi-k2-thinking
$0.60 / $2.50
Vertexmoonshotai/kimi-k2-thinking-maas
$0.60 / $2.50$0.06 cache
ZenMuxmoonshotai/kimi-k2-thinking-turbo
$1.15 / $8.00$0.15 cache
Alibaba (China)kimi-k2-thinking
$0.57 / $2.29

Rates in USD per 1M tokens. Rates synchronized from models.dev public catalog.

Prompt Caching Active

This model supports prompt caching at $0.15 / 1M tokens, saving up to 75% on repetitive MCP tool definitions and system instructions.