Across 18 shared benchmarks, Kimi K2 Instruct scores higher on 0 and Claude Opus 5 on 18. The widest gap is HLE, where Claude Opus 5 scores 64.7 against 7.9. Kimi K2 Instruct is the cheaper of the two on tracked API pricing ($0.60 against $5.00 per million input tokens).
Best tracked score per model per benchmark (default configuration; source-attributed). ↓ marks lower-is-better metrics. Open either model for its full surface, provenance and pricing. Quoted rates are the price-setter row we currently track for each model — its direct or vendor-official listing where one exists (direct, direct), otherwise the lowest tracked offer.