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Kimi K3

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Moonshot AI's flagship open-weight model, with a 1M-token context and its own licence

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About Kimi K3

Kimi K3 is the flagship of Moonshot AI, launched on 16 July 2026. It is a mixture-of-experts model with 2.8 trillion parameters, of which 104 billion are active, and its full weights were published on 27 July 2026. The source describes it as the largest open-weight model available for public download.

What Kimi K3 does

  • Mixture-of-experts design: 2.8 trillion parameters with 104 billion active.
  • Long context: a window of 1,048,576 tokens.
  • Published weights: full weights released for download on 27 July 2026.
  • Own licence: the Kimi K3 License, which makes it open-weight but not OSI open source.

Key facts

  • Launched: 16 July 2026
  • Developer: Moonshot AI
  • Licence: Kimi K3 License, not OSI open source

Profile written by TrustList from the business's own published information, Oct 2026.

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Trust Score

4/ 100
Trust Score: New

An earned signal from verification, reviews, awards, transparency and engagement - the vendor can't buy it.

Verification
0/100 · 20%
Reviews
0/100 · 30%
Awards
0/100 · 15%
Transparency
18/100 · 20%
Engagement
0/100 · 15%
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Updated 9/16/2026

What the business tells TrustList

Founded
2026 (0 years) evidence sent

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