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Moonshot AI

Kimi K3

Benchmarks, price, context and versions

Also searched as

Kimi K3 benchmark, kimi k3.1 pro, kimi k3.1, kimi k3 pricing

Direct answer: Kimi K3 is a model from Moonshot AI. 93.1% on GPQA Diamond, per Epoch AI.

✓ Good for

  • technical reasoning on science topics (#23 of 198 on GPQA Diamond)
  • calculation and problems with an exact answer (#35 of 186 on OTIS Mock AIME)
  • technical reasoning as the model appears through the API (#12 of 135 on GPQA Diamond (OpenRouter))
  • very long documents or code (a window of 1 million tokens or more, according to OpenRouter)
  • running on your own infrastructure (open weights)

✕ Not the best for

  • Not enough data in the open sources this section uses to build this block.

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

GPQA Diamond

?what it is
93.1%

highest score on this metric 96.4%

23º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

?
97.2%

highest score on this metric 100%

35º / 186 · Epoch AI, latest version we checked

FrontierMath (tiers 1 to 3)

?
72.2%

highest score on this metric 95.1%

27º / 86 · Epoch AI, latest version we checked

SimpleQA Verified

?
50.6%

highest score on this metric 94%

29º / 87 · Epoch AI, latest version we checked

GPQA Diamond (OpenRouter)

?
93.5%

highest score on this metric 96.5%

12º / 135 · OpenRouter Benchmarks, latest version we checked

τ-bench Verified (airline)

?
76.2%

highest score on this metric 82%

40º / 131 · OpenRouter Benchmarks, latest version we checked

Key specs

Origin
China
Family
Kimi K3 provisional data
Weights?
open
License
no data
Input US$/1M?
US$ 0.19 to check
Output US$/1M
US$ 16.00
Context?
1,048,576 tokens
Parameters
no data
Input
image, text, video
OpenRouter usage?
0.5%
Downloads (30 days)?
no data
Use cases provisional data
Text Agents
Dates in sources
  • 2026, published, per Epoch AI
  • 2026, listed on OpenRouter

Version history

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

How much does Kimi K3 cost?

On OpenRouter, US$ 0.19 per 1 million input tokens and US$ 16.00 per 1 million output tokens. odd value in the source, under review.

Is Kimi K3 open source?

Yes, it has open weights. License: no data.

What is Kimi K3?

Kimi K3 is a model from Moonshot AI, with open weights, used for text, agents.

What is the context window of Kimi K3?

1,048,576 tokens, per OpenRouter.

What is Kimi K3's GPQA Diamond score?

93.1% on GPQA Diamond, per Epoch AI.

Is Kimi K3 good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made Kimi K3?

It was made by Moonshot AI, a lab from China.

provisional data Questions ordered by what shows up in public Google search suggestions (no volume). Answers use source data only.

Models from Moonshot AI

See lab

Sources

  • Epoch AI, CC BY 4.0, latest version we checked.
  • OpenRouter, dados públicos da API; exports de benchmarks e rankings em CC BY 4.0, latest version we checked.
  • OpenRouter Benchmarks, CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.