benchlm.ai

Claude 3 Opus vs Grok 3 [Beta]

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

Quick Verdict

Claude 3 Opus wins overall with a score of 51 vs 33 (18 point difference).Claude 3 Opus wins 4 out of 4 categories.

Claude 3 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score51

Grok 3 [Beta]

CreatorxAI
TypeProprietary
Context128K
Score33

Knowledge

Claude 3 Opus

Claude 3 Opus

59.5

Grok 3 [Beta]

39.8

61
MMLU
42
61
GPQA
41
59
SuperGPQA
39
57
OpenBookQA
37

Coding

Claude 3 Opus

Claude 3 Opus

53

Grok 3 [Beta]

34

53
HumanEval
34

Mathematics

Claude 3 Opus

Claude 3 Opus

60

Grok 3 [Beta]

41

61
AIME 2023
42
63
AIME 2024
44
62
AIME 2025
43
57
HMMT Feb 2023
38
59
HMMT Feb 2024
40
58
HMMT Feb 2025
39
60
BRUMO 2025
41

Reasoning

Claude 3 Opus

Claude 3 Opus

58

Grok 3 [Beta]

39

59
SimpleQA
40
57
MuSR
38

Frequently Asked Questions

Which is better, Claude 3 Opus or Grok 3 [Beta]?

Claude 3 Opus scores higher overall with 51 vs 33, a difference of 18 points across all benchmarks.

Which is better for knowledge tasks, Claude 3 Opus or Grok 3 [Beta]?

Claude 3 Opus leads in knowledge tasks with an average score of 59.5 vs 39.8.

Which is better for coding, Claude 3 Opus or Grok 3 [Beta]?

Claude 3 Opus leads in coding with an average score of 53 vs 34.

Which is better for math, Claude 3 Opus or Grok 3 [Beta]?

Claude 3 Opus leads in math with an average score of 60 vs 41.

Which is better for reasoning, Claude 3 Opus or Grok 3 [Beta]?

Claude 3 Opus leads in reasoning with an average score of 58 vs 39.

Related Comparisons

Claude 3 Opus vs GPT-5.4Claude 3 Opus vs Gemini 3.1 ProClaude 3 Opus vs Claude Opus 4.6Claude 3 Opus vs GPT-5.3 CodexClaude 3 Opus vs Grok 4.1Claude 3 Opus vs GPT-5.2