Claude 3.5 Sonnet vs DeepSeek V3

Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.

Claude 3.5 Sonnet is clearly ahead on the aggregate, 52 to 25. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude 3.5 Sonnet's sharpest advantage is in coding, where it averages 93.7 against 42. The single biggest benchmark swing on the page is SimpleQA, 63% 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 3.5 Sonnet gives you the larger context window at 200K, compared with 128K for DeepSeek V3.

Quick Verdict

Pick Claude 3.5 Sonnet if you want the stronger benchmark profile. DeepSeek V3 only becomes the better choice if mathematics is the priority.

Agentic

Coming soon

Benchmark data for this category is coming soon.

Coding

Claude 3.5 Sonnet

Claude 3.5 Sonnet

93.7

DeepSeek V3

42

93.7%
HumanEval
Coming soon
Coming soon
SWE-bench Verified
42%

Multimodal & Grounded

Coming soon

Benchmark data for this category is coming soon.

Reasoning

Claude 3.5 Sonnet

Claude 3.5 Sonnet

61.9

DeepSeek V3

24.9

63%
SimpleQA
24.9%
61%
MuSR
Coming soon

Knowledge

Claude 3.5 Sonnet

Claude 3.5 Sonnet

70.4

DeepSeek V3

69.6

89.3%
MMLU
88.5%
65%
GPQA
59.1%
63%
SuperGPQA
Coming soon
61%
OpenBookQA
Coming soon
78%
MMLU-Pro
75.9%

Instruction Following

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

90.2%
IFEval
Coming soon

Multilingual

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

92.5%
MGSM
Coming soon

Mathematics

DeepSeek V3

Claude 3.5 Sonnet

64

DeepSeek V3

90.2

65%
AIME 2023
Coming soon
16%
AIME 2024
39.2%
66%
AIME 2025
Coming soon
61%
HMMT Feb 2023
Coming soon
63%
HMMT Feb 2024
Coming soon
62%
HMMT Feb 2025
Coming soon
64%
BRUMO 2025
Coming soon
Coming soon
MATH-500
90.2%

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or DeepSeek V3?

Claude 3.5 Sonnet is ahead overall, 52 to 25. The biggest single separator in this matchup is SimpleQA, where the scores are 63% and 24.9%.

Which is better for knowledge tasks, Claude 3.5 Sonnet or DeepSeek V3?

Claude 3.5 Sonnet has the edge for knowledge tasks in this comparison, averaging 70.4 versus 69.6. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Claude 3.5 Sonnet or DeepSeek V3?

Claude 3.5 Sonnet has the edge for coding in this comparison, averaging 93.7 versus 42. DeepSeek V3 stays close enough that the answer can still flip depending on your workload.

Which is better for math, Claude 3.5 Sonnet or DeepSeek V3?

DeepSeek V3 has the edge for math in this comparison, averaging 90.2 versus 64. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Claude 3.5 Sonnet or DeepSeek V3?

Claude 3.5 Sonnet has the edge for reasoning in this comparison, averaging 61.9 versus 24.9. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Last updated: March 17, 2026

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