Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Claude Haiku 4.5 is clearly ahead on the aggregate, 30 to 25. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Haiku 4.5's sharpest advantage is in reasoning, where it averages 63.9 against 24.9. The single biggest benchmark swing on the page is SimpleQA, 65% to 24.9%. DeepSeek V3 does hit back in mathematics, so the answer changes if that is the part of the workload you care about most.
Claude Haiku 4.5 is also the more expensive model on tokens at $0.80 input / $4.00 output per 1M tokens, versus $0.27 input / $1.10 output per 1M tokens for DeepSeek V3. That is roughly 3.6x on output cost alone. Claude Haiku 4.5 gives you the larger context window at 200K, compared with 128K for DeepSeek V3.
Pick Claude Haiku 4.5 if you want the stronger benchmark profile. DeepSeek V3 only becomes the better choice if mathematics is the priority or you want the cheaper token bill.
Benchmark data for this category is coming soon.
Claude Haiku 4.5
41.5
DeepSeek V3
42
Benchmark data for this category is coming soon.
Claude Haiku 4.5
63.9
DeepSeek V3
24.9
Claude Haiku 4.5
66
DeepSeek V3
69.6
Benchmark data for this category is coming soon.
Benchmark data for this category is coming soon.
Claude Haiku 4.5
67
DeepSeek V3
90.2
Claude Haiku 4.5 is ahead overall, 30 to 25. The biggest single separator in this matchup is SimpleQA, where the scores are 65% and 24.9%.
DeepSeek V3 has the edge for knowledge tasks in this comparison, averaging 69.6 versus 66. Inside this category, MMLU is the benchmark that creates the most daylight between them.
DeepSeek V3 has the edge for coding in this comparison, averaging 42 versus 41.5. Claude Haiku 4.5 stays close enough that the answer can still flip depending on your workload.
DeepSeek V3 has the edge for math in this comparison, averaging 90.2 versus 67. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
Claude Haiku 4.5 has the edge for reasoning in this comparison, averaging 63.9 versus 24.9. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
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