moonshotai/kimi-k3Kimi K3 is Moonshot’s open-weights AI model, released Jul 16, 2026. It scores 158 on the Epoch Capabilities Index, costs $3/M input and $15/M output tokens, and handles a 1M-token context window. Its strongest use case is coding, where it ranks in the 94th percentile of the models Model Beat tracks.
Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI.
Scores on standardized evaluations. Higher is better — and rank shows where Kimi K3 lands among all models tracked on Model Beat.
Abstract visual reasoning
Harder abstract reasoning
Graduate-level scientific reasoning
Frontier of human expert knowledge
Common-sense trick questions
Factual accuracy & hallucination
Novel ML problem-solving
Scientific research coding
Human-rated web development
Olympiad-qualifier math
Multi-step agentic tasks
Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI.
Kimi K3 is an AI model developed by Moonshot, part of the Kimi family, released Jul 16, 2026.
Kimi K3's list price from Moonshot is $3 per million input tokens and $15 per million output tokens. The cheapest credible third-party provider on OpenRouter (Chutes) serves it at $1.85/$9.50 per 1M.
Kimi K3 supports a context window of up to 1M tokens.
On standardized evaluations tracked by Epoch AI, Kimi K3 scores 59.5% on SciCode, 46.9% on Humanity's Last Exam, 1674 on WebDev Arena.
Kimi K3 is released with open weights (Open weights (non-commercial)), so the model can be downloaded and self-hosted.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Oct 29, 2026.