Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Claude Sonnet 4.5 is clearly ahead on the aggregate, 76 to 63. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Sonnet 4.5's sharpest advantage is in mathematics, where it averages 92.4 against 75. The single biggest benchmark swing on the page is AIME 2023, 97 to 71.
Claude Sonnet 4.5 is also the more expensive model on tokens at $3.00 input / $15.00 output per 1M tokens, versus $0.25 input / $2.00 output per 1M tokens for Seed-2.0-Lite. That is roughly 7.5x on output cost alone. Seed-2.0-Lite gives you the larger context window at 256K, compared with 200K for Claude Sonnet 4.5.
Pick Claude Sonnet 4.5 if you want the stronger benchmark profile. Seed-2.0-Lite only becomes the better choice if you want the cheaper token bill or you need the larger 256K context window.
Claude Sonnet 4.5
70.3
Seed-2.0-Lite
55.1
Claude Sonnet 4.5
57.5
Seed-2.0-Lite
41.4
Claude Sonnet 4.5
91.4
Seed-2.0-Lite
79.6
Claude Sonnet 4.5
86
Seed-2.0-Lite
73
Claude Sonnet 4.5
70.7
Seed-2.0-Lite
53.9
Claude Sonnet 4.5
90
Seed-2.0-Lite
89
Claude Sonnet 4.5
88.4
Seed-2.0-Lite
82.5
Claude Sonnet 4.5
92.4
Seed-2.0-Lite
75
Claude Sonnet 4.5 is ahead overall, 76 to 63. The biggest single separator in this matchup is AIME 2023, where the scores are 97 and 71.
Claude Sonnet 4.5 has the edge for knowledge tasks in this comparison, averaging 70.7 versus 53.9. Inside this category, MMLU is the benchmark that creates the most daylight between them.
Claude Sonnet 4.5 has the edge for coding in this comparison, averaging 57.5 versus 41.4. Inside this category, HumanEval is the benchmark that creates the most daylight between them.
Claude Sonnet 4.5 has the edge for math in this comparison, averaging 92.4 versus 75. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Claude Sonnet 4.5 has the edge for reasoning in this comparison, averaging 86 versus 73. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Claude Sonnet 4.5 has the edge for agentic tasks in this comparison, averaging 70.3 versus 55.1. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Claude Sonnet 4.5 has the edge for multimodal and grounded tasks in this comparison, averaging 91.4 versus 79.6. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
Claude Sonnet 4.5 has the edge for instruction following in this comparison, averaging 90 versus 89. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Claude Sonnet 4.5 has the edge for multilingual tasks in this comparison, averaging 88.4 versus 82.5. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.
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