Across 6 shared benchmarks, Claude Opus 4.6 scores higher on 6 and Seed 2.0 on 0. The widest gap is browsecomp, where Claude Opus 4.6 scores 86.8 against 77.3. Seed 2.0 is the cheaper of the two on tracked API pricing ($0.50 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 (anthropic-official, deepinfra), otherwise the lowest tracked offer.