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Compare two models.
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SwapDeepSeek V4.1 Flash
DeepSeek's V4.1 Flash is a very large text model for writing and answering questions, free to download, and needs powerful servers to run.
Release page →Kimi K3
Moonshot AI's Kimi K3 is a very large model that can read text, images and video, free to download for research and non-commercial use and aimed at long coding and knowledge-work tasks.
Release page →The basics
Released
What it does
Knowledge cutoff
The latest events it learned about
Download
Price and limits, for developers
Input
Per million tokens
Output
Per million tokens
Cached input
Per million tokens
Context window
How much it takes in at once
Longest answer
How they score
Combined test score
Epoch Capabilities Index · Epoch AI
Too close to call: DeepSeek V4.1 Flash and Kimi K3 are within the margin of error.
Chat answers, by people's votes
LMArena text, adjusted for style · LMArena
Neck and neck: in blind votes, people pick each about as often as the other.
Building apps, by people's votes
LMArena WebDev · LMArena
Neck and neck: in blind votes, people pick each about as often as the other.
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.
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MAI-Image-2.6Not 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.