Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Claude Opus 4.5 is clearly ahead on the aggregate, 77 to 53. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Opus 4.5's sharpest advantage is in coding, where it averages 60.4 against 24.7. The single biggest benchmark swing on the page is SWE-bench Verified, 68 to 22.
Seed-2.0-Mini gives you the larger context window at 256K, compared with 200K for Claude Opus 4.5.
Pick Claude Opus 4.5 if you want the stronger benchmark profile. Seed-2.0-Mini only becomes the better choice if you need the larger 256K context window.
Claude Opus 4.5
70.5
Seed-2.0-Mini
46.2
Claude Opus 4.5
60.4
Seed-2.0-Mini
24.7
Claude Opus 4.5
90.9
Seed-2.0-Mini
73.1
Claude Opus 4.5
87.7
Seed-2.0-Mini
64.8
Claude Opus 4.5
70.9
Seed-2.0-Mini
44.6
Claude Opus 4.5
90
Seed-2.0-Mini
80
Claude Opus 4.5
86.1
Seed-2.0-Mini
71.8
Claude Opus 4.5
93.2
Seed-2.0-Mini
65.1
Claude Opus 4.5 is ahead overall, 77 to 53. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 68 and 22.
Claude Opus 4.5 has the edge for knowledge tasks in this comparison, averaging 70.9 versus 44.6. Inside this category, MMLU is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for coding in this comparison, averaging 60.4 versus 24.7. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for math in this comparison, averaging 93.2 versus 65.1. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for reasoning in this comparison, averaging 87.7 versus 64.8. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for agentic tasks in this comparison, averaging 70.5 versus 46.2. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for multimodal and grounded tasks in this comparison, averaging 90.9 versus 73.1. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for instruction following in this comparison, averaging 90 versus 80. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Claude Opus 4.5 has the edge for multilingual tasks in this comparison, averaging 86.1 versus 71.8. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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