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Kimi K3

Open weights by Moonshot

Benchmarks aside, it is the model we find strongest on complex, multi-step tasks and security reviews. Unlike GLM 5.3, it reads images, so it is the pick when a hard problem comes with screenshots or diagrams.

Get an API keyLive status
Price per 1M tokens
$3.00 in$15.00 out
$0.30 cache read
Context
1M
128K max output
Parameters
2.8T
104B active
Weights
MXFP4
Official release
  • Vision
  • Tool calling
  • Reasoning optional, default max

How it ranks

Against every model we serve, best first. Starred scores are reported by the publisher on its model card; the rest are independent measurements. About the scores

Artificial Analysis Intelligence Indexby Artificial Analysis
  1. GLM 5.345
  2. Kimi K344
  3. GLM 5.3 Flash42
  4. DeepSeek V4.1 Flash39
  5. DeepSeek V4 Flash34
  6. Qwen3.6 35B A3B18
DeepSWEby Datacurve
  1. DeepSeek V4.1 Flash74.2%* reported by the publisher
  2. GLM 5.369%
  3. Kimi K368.5%
  4. GLM 5.3 Flash63.4%
  5. DeepSeek V4 Flash54.4%* reported by the publisher

Not published: Qwen3.6 35B A3B.

Terminal-Bench 2.1by tbench.ai
  1. DeepSeek V4.1 Flash90.6%* reported by the publisher
  2. Kimi K385%
  3. GLM 5.3 Flash84.3%
  4. GLM 5.383.9%
  5. DeepSeek V4 Flash78.7%
  6. Qwen3.6 35B A3B44.9%
  • Artificial Analysis Intelligence Index for Kimi K3: independent measurement. Source
  • DeepSWE for Kimi K3: independent measurement. Source
  • Terminal-Bench 2.1 for Kimi K3: independent measurement. Source

Pricing

Input
$3.00 per 1M tokens
Output
$15.00 per 1M tokens
Cache read
$0.30 per 1M tokens

See all prices

Specs

Context window
1M tokens
Max output
128K tokens
Parameters
2.8T total, 104B active per token
Vision
Yes
Tool calling
Yes
Reasoning
Adjustable (none, low, high, max)
Default effort
max
Weights
MXFP4, from quantization-aware training, official release
In production since
July 31, 2026

Quickstart

Pick your tool; the command already carries this model's id. More tools (Pi, Copilot, Zed, omp) in the setup guides.

OpenCode
Built in
Launch OpenCode on this model with the umans CLI. Umans AI is also built into OpenCode: run /connect and pick it.
Terminal
curl -fsSL https://api.code.umans.ai/cli/install.sh | bash   # once
umans opencode --model umans-kimi-k3
Full setup in the docs

Or consider

Kimi K3 API: pricing, context and benchmarks · Umans AI