Kimi K2
Kimi K2 was Moonshot AI’s open-weights model family from 2025. All K2 API variants were discontinued on May 25, 2026.
Last updated
Key facts
At a glance
- Context window
- Not published
- Parameters
- 1T
- Released
- July 11, 2025
- Output / 1M
- Not published
Capabilities
What can Kimi K2 do?
- Text inputsupported
- Image inputnot supported
- Video inputnot supported
- Thinking modenot supported
- Tool callingsupported
- JSON modenot supported
- Structured outputnot supported
- Partial modenot supported
- Context cachingnot supported
- Web searchnot supported
- Open weightssupported
Notes
What the spec sheet leaves out
- The whole
kimi-k2-*series — includingkimi-k2-thinkingand the turbo variants — was discontinued on May 25, 2026 and is no longer maintained or supported. - Open weights remain downloadable, so K2 is still usable if you self-host.
- Documented here because it still receives search traffic. Anyone landing here should move to Kimi K3.
FAQ
Kimi K2 questions
What is Kimi K2?
Kimi K2 was Moonshot AI’s open-weights model family from 2025. All K2 API variants were discontinued on May 25, 2026.
Can I still use Kimi K2?
Not through the hosted API. Moonshot AI discontinued Kimi K2 on May 25, 2026 and those endpoints no longer respond. The open weights remain downloadable, so it can still be self-hosted.
Is Kimi K2 open source?
Moonshot AI published downloadable open weights for Kimi K2, so you can self-host it. That is not the same as an OSI-approved open-source licence — check the licence attached to the weight release before deploying commercially.
Sources
Where these figures come from
Every specification and price on this page is transcribed from Moonshot AI’s own documentation and re-checked on the date shown. Nothing is estimated.