Moonshot AI · Released Nov 6, 2025

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. Built on the trillion-parameter Mixture-of-Experts (MoE) architecture introduced in...

ReasoningOpen weights
Released
Nov 6 2025
Context window
262K 98K out
Input / 1M tokens
$0.60 from $0.40
Output / 1M tokens
$2.50 from $2.00

Where to run it

19 providers compared

Cheapest: Helicone at $0.48 / $2.00 per 1M input / output tokens — 42% less than the priciest option.

ProviderInputOutputCache readContextMax outputUptimevs. best
Helicone $0.48 $2.00 —256K262K— Cheapest
OpenCode $0.40 $2.50 $0.40262K262K— +8%
Alibaba (China) $0.57 $2.29 —262K16K— +17%
302.AI $0.57 $2.30 —262K262K— +17%
Qiniu $0.58 $2.32 —256K100K— +18%
NovitaBF16 $0.60 $2.50 $0.15262K98K100%24h +25%
Google $0.60 $2.50 —262K236K90.2%24h +25%
NanoGPT $0.60 $2.50 $0.15262K98K— +25%
Kilo Gateway $0.60 $2.50 $0.15262K98K— +25%
ZenMux $0.60 $2.50 $0.15262K64K— +25%
IO.NET $0.60 $2.50 $0.3033K4K— +25%
Charm Hyper $0.60 $2.50 $0.30262K26K— +25%
Novita AI $0.60 $2.50 $0.15262K98K— +25%
Amazon Bedrock $0.60 $2.50 —262K16K— +25%
Hugging Face $0.60 $2.50 $0.15262K262K— +25%
Merge Gateway $0.60 $2.50 —262K262K— +25%
Eden AI $0.60 $2.50 —256K262K— +25%
Meganova $0.60 $2.60 —262K262K— +28%
AI/ML API $0.82 $3.44 $0.21262K98K— +72%

Value

Price vs. performance

8 models score higher for the same price or lesson Terminal-Bench, e.g. Gemini 3 Flash Preview.
3.4%30.5%57.6%84.7% $0.01$0.10$1.00$10.00$100.00 Qwen3.6 35B A3B (Qwen) — 24.6% · $0.10/1M in GPT-5.5 (OpenAI) — 84.7% · $5.00/1M in Claude Opus 4.7 (Anthropic) — 80.2% · $5.00/1M in Grok 4.20 (xAI) — 57.3% · $1.25/1M in MiniMax M2.7 (MiniMax) — 45.1% · $0.30/1M in Qwen3.5-9B (Qwen) — 9.2% · $0.08/1M in GPT-5.4 (OpenAI) — 81.8% · $2.50/1M in GPT-5.3-Codex (OpenAI) — 78.4% · $1.75/1M in Gemini 3.1 Pro Preview (Google) — 80.2% · $2.00/1M in Claude Sonnet 4.6 (Anthropic) — 53.4% · $3.00/1M in MiniMax M2.5 (MiniMax) — 42.7% · $0.27/1M in GLM 5 (Z.ai) — 52.4% · $1.00/1M in Claude Opus 4.6 (Anthropic) — 79.8% · $5.00/1M in GPT-5.2-Codex (OpenAI) — 66.5% · $1.75/1M in MiniMax M2.1 (MiniMax) — 36.6% · $0.30/1M in GLM 4.7 (Z.ai) — 33.4% · $0.54/1M in Gemini 3 Flash Preview (Google) — 64.3% · $0.50/1M in GPT-5.2 (OpenAI) — 64.9% · $1.75/1M in GPT-5.1-Codex-Max (OpenAI) — 60.5% · $1.25/1M in DeepSeek V3.2 (DeepSeek) — 39.6% · $0.28/1M in Claude Opus 4.5 (Anthropic) — 63.1% · $5.00/1M in GPT-5.1 (OpenAI) — 47.6% · $1.25/1M in GPT-5.1-Codex (OpenAI) — 57.8% · $1.25/1M in GPT-5.1-Codex-Mini (OpenAI) — 61.6% · $0.25/1M in MiniMax M2 (MiniMax) — 30.0% · $0.26/1M in Claude Haiku 4.5 (Anthropic) — 35.5% · $1.00/1M in GLM 4.6 (Z.ai) — 24.5% · $0.55/1M in Claude Sonnet 4.5 (Anthropic) — 46.5% · $3.00/1M in DeepSeek V3.2 Exp (DeepSeek) — 39.6% · $0.27/1M in GPT-5 (OpenAI) — 49.6% · $1.25/1M in GPT-5 Mini (OpenAI) — 34.8% · $0.25/1M in GPT-5 Nano (OpenAI) — 21.8% · $0.05/1M in gpt-oss-120b (OpenAI) — 18.7% · $0.15/1M in gpt-oss-20b (OpenAI) — 3.4% · $0.018/1M in Claude Opus 4.1 (Anthropic) — 38.0% · $15.00/1M in Gemini 2.5 Flash (Google) — 17.1% · $0.30/1M in Gemini 2.5 Pro (Google) — 32.6% · $1.25/1M in Gemini 2.5 Pro Preview 06-05 (Google) — 32.6% · $1.25/1M in Kimi K2.5 (Moonshot AI) — 43.2% · $0.50/1M in Kimi K2 Thinking (Moonshot AI) — 35.7% · $0.60/1M in Kimi K2 Thinking

Kimi K2 Thinking Other Moonshot AI Other labs Value frontier · Terminal-Bench vs. input price per 1M tokens (log scale) · Drag to pan, pinch or Ctrl + scroll to zoom, double-click to zoom in.

Benchmarks

2 benchmark scores

BenchmarkScoreRankLeader
Terminal-BenchSoftware engineering · Tasks completed with the programs in a real terminal (best agent) 35.7% #27of 40 GPT-5.584.7%
METR time horizonSoftware engineering · Length of software task solved more often than not 54 min #13of 23 Claude Opus 4.612 h

Specs

Details

Model ID
moonshotai/kimi-k2-thinking
Developer
Moonshot AI
Release date
Nov 6, 2025 ·
Context window
262,144 tokens
Max output
98,304 tokens
API price
$0.60 / $2.50 per 1M input / output tokens
Providers
19
Input types
text
Reasoning
Yes
Tool calling
Yes
Open weights
Yes
Free tier
No

Release date and prices from OpenRouter's catalog; providers from OpenRouter and models.dev. Buying directly from a provider can cost a little differently. Speed, latency and uptime are measured on OpenRouter only; uptime is the share of OpenRouter requests each provider served over the last day. Benchmark scores are the best result per benchmark from Epoch AI, licensed CC BY 4.0. Rank counts every model tracked here with a score.