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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
Nov 6, 2025

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.Code: Writes, explains and fixes code.Thinks first: Can reason step by step before it answers: slower, but better at maths, code and tricky questions.

Knowledge cutoff

The latest events it learned about

Not published
Not published

Download

No: it runs on the maker's servers
FreeOpen weights, licence has limits

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
$0.60

Output

Per million tokens

$3.33
$2.50Cheaper

Cached input

Per million tokens

$0.209
$0.15Cheaper

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
98K tokens about 74,000 wordsLonger

How they score

Combined test score

Epoch Capabilities Index · Epoch AI

149#71 of 235Higher
146#89 of 235

Kimi K2.5 scores 3 points higher.

Chat answers, by people's votes

LMArena text, adjusted for style · LMArena

1,450#68 of 86
Not ranked

Only Kimi K2.5 is in this ranking, which lists the most-voted models.

Building apps, by people's votes

LMArena WebDev · LMArena

1,436#74 of 85
Not ranked

Only Kimi K2.5 is in this ranking, which lists the most-voted models.

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

Not sure where to start? Which AI should I use? gives a pick for what you want to do. How to read AI rankings explains the numbers.

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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