Kimi-K3 Review: Top Open-Source but Costly
scaling01 · x · 2026-07-18
In the LisanBench evaluation, Kimi-K3 emerged as the strongest open-weight model currently available, ranking 5th in standard metrics and 4th in difficulty-weighted metrics.
- Performance: It outperformed Gemini 3.1 Pro (high), GPT-5.5, and Opus 4.8, though it still falls short of Opus 4.7 xhigh at comparable token usage.
- Cost: Despite its excellent performance, it consumes 2-3 times more tokens than the compared models, making actual usage costs significantly higher.
Related event: Kimi-K3 Tops LisanBench as Strongest Open-Weight Model(2 posts)→
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