specs at a glance
| Leaderboard rank | #3 of 14 |
|---|---|
| SWE-bench Verified | 93.4% |
| SWE-bench Pro | — |
| Terminal-Bench | 88.3% |
| Input price / 1M | $3 |
| Output price / 1M | $15 |
| Context window | 1M |
| Open weights | Yes |
| Access | API · app · open weights promised Jul 27, 2026 |
| Maker | Moonshot AI |
how good is Kimi K3 at coding?
Kimi K3 sits at #3 of 14 ranked models, posting 93.4% on SWE-bench Verified — 2.8 points behind #1 GPT-5.6 Sol. Terminal-Bench (agentic terminal work): 88.3%.
Score provenance: Independent (vals.ai, mini-swe-agent bash-only harness): SWE-bench Verified 93.40% ±1.11. Verified Jul 18, 2026 — vals.ai had not run K3 at our Jul 17 check and now ranks it third overall (above GPT-5.6 Luna at 93.0% and Claude Opus 4.8 at 88.6%), making it the highest-scoring open-weight coder we track. Moonshot published no SWE-bench Verified score of its own, only Terminal-Bench 2.1 88.3% on its KimiCode harness, so we rank on the independent number per our standing rule. Also 3rd on Artificial Analysis GDPval-AA v2 and 2nd on AA-Briefcase. Price: Moonshot API $3/$15 per 1M (cache-hit input $0.30); open weights promised Jul 27, 2026.
what does Kimi K3 cost?
$3 per 1M input tokens and $15 per 1M output — #10 cheapest of the 14 models we track. Coding workloads are output-heavy, so weight the output rate when budgeting. Run your own volume through the AI API cost calculator for a monthly estimate.
where can you use it?
Available via API · app · open weights promised Jul 27, 2026. Because it ships open weights, you can also self-host it on your own hardware or any inference provider — with the version pinned so the model can't change under you.
head-to-head
Full storyKimi K3 Is the Largest Open Model Ever, and It Is Not Cheap
- Moonshot AIvals.ai — SWE-bench Verified (independent)
Ranked on our AI Coding Leaderboard — scores confirmed against primary sources only, updated 2026-07-18.