We ran 452 DeepSWE rollouts on Kimi K3 and Claude Fable 5. Fable leads pass@1 by 1.4 points; Kimi K3 wins pass@4 and delivers 2.8x the solves per dollar.

Everyone posts Kimi K3 benchmark scores; the benchmark itself is harder to find. So we built one vs Claude Fable 5 and Opus 4.8, read every line all…

Kimi K3 ranks second in AI models but faces high operational costs. Anthropic's Claude Fable 5 at 93.5% YES to be the best AI model by August 2026.