benchlm.ai

Claude Opus 4.6 vs Grok 3 [Beta]

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

Quick Verdict

Claude Opus 4.6 wins overall with a score of 86 vs 33 (53 point difference).Claude Opus 4.6 wins 4 out of 4 categories.

Claude Opus 4.6

CreatorAnthropic
TypeProprietary
Context1M
Score86

Grok 3 [Beta]

CreatorxAI
TypeProprietary
Context128K
Score33

Knowledge

Claude Opus 4.6

Claude Opus 4.6

96

Grok 3 [Beta]

39.8

99
MMLU
42
97
GPQA
41
95
SuperGPQA
39
93
OpenBookQA
37

Coding

Claude Opus 4.6

Claude Opus 4.6

91

Grok 3 [Beta]

34

91
HumanEval
34

Mathematics

Claude Opus 4.6

Claude Opus 4.6

97.1

Grok 3 [Beta]

41

99
AIME 2023
42
99
AIME 2024
44
98
AIME 2025
43
95
HMMT Feb 2023
38
97
HMMT Feb 2024
40
96
HMMT Feb 2025
39
96
BRUMO 2025
41

Reasoning

Claude Opus 4.6

Claude Opus 4.6

94

Grok 3 [Beta]

39

95
SimpleQA
40
93
MuSR
38

Frequently Asked Questions

Which is better, Claude Opus 4.6 or Grok 3 [Beta]?

Claude Opus 4.6 scores higher overall with 86 vs 33, a difference of 53 points across all benchmarks.

Which is better for knowledge tasks, Claude Opus 4.6 or Grok 3 [Beta]?

Claude Opus 4.6 leads in knowledge tasks with an average score of 96 vs 39.8.

Which is better for coding, Claude Opus 4.6 or Grok 3 [Beta]?

Claude Opus 4.6 leads in coding with an average score of 91 vs 34.

Which is better for math, Claude Opus 4.6 or Grok 3 [Beta]?

Claude Opus 4.6 leads in math with an average score of 97.1 vs 41.

Which is better for reasoning, Claude Opus 4.6 or Grok 3 [Beta]?

Claude Opus 4.6 leads in reasoning with an average score of 94 vs 39.

Related Comparisons

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