Kimi K3
by Moonshot AI · ChinaAt 2.8 trillion parameters the largest open-weight model yet published — a multimodal mixture of experts routing 16 of 896 experts plus two shared ones per token, for 104B active. Weights released under a bespoke licence: open weights, not OSI open source.
Specification
The numbers
- Maker
- Moonshot AI
- Released
- 2026-07
- Parameters
- 2.8T total / 104B active
- Architecture
- MoE
- Context window
- 1,048,576 tokens
- Max output
- 1,048,576 tokens
- Input
- Text, Image
- Output
- Text
- Reasoning
- Yes
- Tool calling
- Yes
- Knowledge cutoff
- Not reported
- Licence
- Kimi K3 License
- Availability
- Not reported
- Weights
- Downloadable
Cost
Price per million tokens
- Input
- $3.00 / M tokens
- Output
- $15.00 / M tokens
- Cached input
- $0.30
- Blended 3:1
- $6.00
This model has open weights, so there is no first-party price. The figures above are a representative third-party hosting rate — you can also run it yourself for the cost of the hardware.
Published scores
Benchmarks
Figures published by Moonshot AI or taken from a public leaderboard. Row last checked 2026-09.
Every reported test
Where these numbers come from
Every score on this page is a published figure, taken from the model's own card, system card, technical report or release post, or from a public leaderboard. CorX Labs did not run these evaluations. Most are self-reported by the lab that built the model, which means they were produced under that lab's own choice of prompt, scaffold and number of attempts — so treat them as a starting point for a shortlist, not as a settled ranking.
A score someone other than the model's maker measured is marked Independent and names its measurer. Those are the stronger numbers on this page — an outside harness has no reason to flatter anyone — and there are not many of them.
Where a figure has not been published, the cell reads Not reported rather than an estimate. Nothing here is inferred, interpolated or guessed. Each model records the month its row was last checked. Full method and caveats.
Same maker
Other models from Moonshot AI
| Kimi K2 ThinkingMoonshot AI | Moonshot AI | 262K | $0.60 | $2.50 | — | 84.5% | 94.5% | 71.3% | Modified MIT |
| Kimi K2 InstructMoonshot AI | Moonshot AI | 131K | $0.60 | $2.50 | 81.1% | — | — | 65.8% | Modified MIT |
| Kimi-Dev-72BMoonshot AI | Moonshot AI | 131K | $0.290 | $1.15 | — | — | — | 60.4% | Modified MIT |