Kimi K3
Moonshot AIJul 22, 2026N/A
Open weights
Moonshot's open-frontier flagship: the first open model at 2.8T parameters, third place on major intelligence indexes (#5 of 226 tracked models), and the highest self-reported SWE-bench Verified figure we track (93.4%).
- Status
- Generally available
- License
- Open weights · Custom
- Context window
- 1M
- Max output
- 128K
- Input · $/M
- $3
- Output · $/M
- $15
- Cached input · $/M
- $0.3
- Blended · $/M
- $6.00
- Parameters
- 2.8T MoE — first open model at this scale
- Inputs
- Text + images
Benchmarks
Composite 93.4· mean of published scores
Reasoning & knowledge
GPQA Diamond
no public score
MMLU-Pro
no public score
Humanity's Last Exam
no public score
ARC-AGI-2
no public score
Coding
SWE-bench VerifiedLeader
93.4%
SWE-bench Pro
no public score
LiveCodeBench
no public score
Agents & computer use
Terminal-Bench 2
no public score
OSWorld 2.0
no public score
BrowseComp
no public score
Math
AIME 2026
no public score
Known strengths
- Top self-reported SWE-V (93.4%)
- 3rd on composite intelligence indexes
- Flat pricing across the full 1M context
Caveats
- 93.4% SWE-V is vendor-reported; independent reproduction is still limited
- Hosted prices vary widely by provider ($3–$5 input)
- Weights rollout staggered after launch