Claude 3.5 Sonnet vs Grok 3 Mini

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 23. 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 41.5. The single biggest benchmark swing on the page is SimpleQA, 63% to 21.7%. Grok 3 Mini does hit back in knowledge, 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 Grok 3 Mini.

Quick Verdict

Pick Claude 3.5 Sonnet if you want the stronger benchmark profile. Grok 3 Mini only becomes the better choice if knowledge 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

Grok 3 Mini

41.5

93.7%
HumanEval
Coming soon
Coming soon
LiveCodeBench
41.5%

Multimodal & Grounded

Coming soon

Benchmark data for this category is coming soon.

Reasoning

Claude 3.5 Sonnet

Claude 3.5 Sonnet

61.9

Grok 3 Mini

21.7

63%
SimpleQA
21.7%
61%
MuSR
Coming soon

Knowledge

Grok 3 Mini

Claude 3.5 Sonnet

70.4

Grok 3 Mini

74.1

89.3%
MMLU
Coming soon
65%
GPQA
66.2%
63%
SuperGPQA
Coming soon
61%
OpenBookQA
Coming soon
78%
MMLU-Pro
78.9%

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

Claude 3.5 Sonnet

Claude 3.5 Sonnet

64

Grok 3 Mini

39.7

65%
AIME 2023
Coming soon
16%
AIME 2024
39.7%
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

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or Grok 3 Mini?

Claude 3.5 Sonnet is ahead overall, 52 to 23. The biggest single separator in this matchup is SimpleQA, where the scores are 63% and 21.7%.

Which is better for knowledge tasks, Claude 3.5 Sonnet or Grok 3 Mini?

Grok 3 Mini has the edge for knowledge tasks in this comparison, averaging 74.1 versus 70.4. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Claude 3.5 Sonnet or Grok 3 Mini?

Claude 3.5 Sonnet has the edge for coding in this comparison, averaging 93.7 versus 41.5. Grok 3 Mini stays close enough that the answer can still flip depending on your workload.

Which is better for math, Claude 3.5 Sonnet or Grok 3 Mini?

Claude 3.5 Sonnet has the edge for math in this comparison, averaging 64 versus 39.7. 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 Grok 3 Mini?

Claude 3.5 Sonnet has the edge for reasoning in this comparison, averaging 61.9 versus 21.7. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Last updated: March 17, 2026

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