RSS

Moonshot AI

Kimi K2.5

Benchmarks, price, context and versions

Also searched as

Kimi-K2.5

Direct answer: Kimi K2.5 is a model from Moonshot AI. 87.6% on GPQA Diamond, per Epoch AI. On OpenRouter, US$ 0.53 per 1 million input tokens and US$ 3.33 per 1 million output tokens.

✓ Good for

  • running on your own infrastructure (open weights)

✕ Not the best for

  • answering short facts with little invention (#57 of 87 on SimpleQA Verified)
  • fixing bugs in real code (#18 of 32 on SWE-bench Verified)

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
87.6%

highest score on this metric 96.4%

61º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

?
92.2%

highest score on this metric 100%

56º / 186 · Epoch AI, latest version we checked

SimpleQA Verified

?
34.3%

highest score on this metric 94%

57º / 87 · Epoch AI, latest version we checked

SWE-bench Verified

?
73.8%

highest score on this metric 83.5%

18º / 32 · Epoch AI, latest version we checked

GPQA Diamond (OpenRouter)

?
90.2%

highest score on this metric 96.5%

38º / 135 · OpenRouter Benchmarks, latest version we checked

τ-bench Verified (airline)

?
73.8%

highest score on this metric 82%

65º / 131 · OpenRouter Benchmarks, latest version we checked

Key specs

Origin
China
Family
Kimi provisional data
Weights?
open
License
other
Input US$/1M?
US$ 0.53
Output US$/1M
US$ 3.33
Context?
262,144 tokens
Parameters
1,026,879,376,368
Input
image, text
OpenRouter usage?
no data
Downloads (30 days)?
393,277
Use cases provisional data
Text Agents Code
Dates in sources
  • 2026, published, per Epoch AI
  • 2026, listed on OpenRouter
  • 2026, Hugging Face repo created

Version history

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

FAQ

What is Kimi K2.5?

Kimi K2.5 is a model from Moonshot AI, with open weights, used for text, agents, code.

How much does Kimi K2.5 cost?

On OpenRouter, US$ 0.53 per 1 million input tokens and US$ 3.33 per 1 million output tokens.

What is the context window of Kimi K2.5?

262,144 tokens, per OpenRouter.

Is Kimi K2.5 open source?

Yes, it has open weights. License: other.

What is Kimi K2.5's GPQA Diamond score?

87.6% on GPQA Diamond, per Epoch AI.

Is Kimi K2.5 good for coding?

It scores 73.8% on SWE-bench Verified, per Epoch AI.

Who made Kimi K2.5?

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

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from Moonshot AI

See lab

Sources

  • Epoch AI, CC BY 4.0, latest version we checked.
  • Hugging Face Hub, metadados públicos do Hub; licença de cada modelo no repositório, 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.