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Kimi K2.5

Moonshot AI's new Kimi model can read images and write code, and it is built to coordinate teams of AI helpers working together.

Release page →

The basics

Released

Jan 27
Apr 20

What it does

Text and chat: Writes, answers questions and holds a conversation.Thinks first: Can reason step by step before it answers: slower, but better at maths, code and tricky questions.Sees images: Understands pictures, screenshots and charts you share with it.
Text and chat: Writes, answers questions and holds a conversation.Thinks first: Can reason step by step before it answers: slower, but better at maths, code and tricky questions.Sees images: Understands pictures, screenshots and charts you share with it.Watches video: Understands video clips you share with it.

Knowledge cutoff

The latest events it learned about

Not published
January 2025

Download

No: it runs on the maker's servers
FreeOpen weights

Where to use it

Moonshot AI's app: Kimi ↗Also for developers, through an API
Moonshot AI's app: Kimi ↗

Price and limits, for developers

Input

Per million tokens

$0.532Cheaper
$0.95

Output

Per million tokens

$3.33Cheaper
$4.00

Cached input

Per million tokens

$0.209
$0.16Cheaper

Context window

How much it takes in at once

256K tokens about 190,000 words
262K tokens about 200,000 wordsBigger

Longest answer

66K tokens about 49,000 words
Not listed

How they score

Combined test score

Epoch Capabilities Index · Epoch AI

149#73 of 237
152#60 of 237

Too close to call: Kimi K2.5 and Kimi K2.6 are within the margin of error.

Chat answers, by people's votes

LMArena text, adjusted for style · LMArena

1,450#68 of 86
1,461#52 of 86

Neck and neck: in blind votes, people pick each about as often as the other.

Building apps, by people's votes

LMArena WebDev · LMArena

1,436#74 of 85
1,509#56 of 85Higher

In blind votes, people pick Kimi K2.6 over Kimi K2.5 about 60% of the time.

Green marks the better of the two on each row, red the other. Rows where one side isn't listed, or where the gap is too close to call, stay plain.

Popular comparisons

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Rankings from LMArena and Epoch AI, both CC BY 4.0, updated . Developer prices, context windows and knowledge cutoffs from the labs' own listings on models.dev and from OpenRouter. The app links go to each maker's own app when no source says exactly where the model is available.

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