benchlm.ai

GPT-5 (medium) vs Grok 3 [Beta]

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

Quick Verdict

GPT-5 (medium) wins overall with a score of 70 vs 33 (37 point difference).GPT-5 (medium) wins 4 out of 4 categories.

GPT-5 (medium)

CreatorOpenAI
TypeProprietary
Context128K
Score70

Grok 3 [Beta]

CreatorxAI
TypeProprietary
Context128K
Score33

Knowledge

GPT-5 (medium)

GPT-5 (medium)

88

Grok 3 [Beta]

39.8

91
MMLU
42
89
GPQA
41
87
SuperGPQA
39
85
OpenBookQA
37

Coding

GPT-5 (medium)

GPT-5 (medium)

83

Grok 3 [Beta]

34

83
HumanEval
34

Mathematics

GPT-5 (medium)

GPT-5 (medium)

92

Grok 3 [Beta]

41

93
AIME 2023
42
95
AIME 2024
44
94
AIME 2025
43
89
HMMT Feb 2023
38
91
HMMT Feb 2024
40
90
HMMT Feb 2025
39
92
BRUMO 2025
41

Reasoning

GPT-5 (medium)

GPT-5 (medium)

86

Grok 3 [Beta]

39

87
SimpleQA
40
85
MuSR
38

Frequently Asked Questions

Which is better, GPT-5 (medium) or Grok 3 [Beta]?

GPT-5 (medium) scores higher overall with 70 vs 33, a difference of 37 points across all benchmarks.

Which is better for knowledge tasks, GPT-5 (medium) or Grok 3 [Beta]?

GPT-5 (medium) leads in knowledge tasks with an average score of 88 vs 39.8.

Which is better for coding, GPT-5 (medium) or Grok 3 [Beta]?

GPT-5 (medium) leads in coding with an average score of 83 vs 34.

Which is better for math, GPT-5 (medium) or Grok 3 [Beta]?

GPT-5 (medium) leads in math with an average score of 92 vs 41.

Which is better for reasoning, GPT-5 (medium) or Grok 3 [Beta]?

GPT-5 (medium) leads in reasoning with an average score of 86 vs 39.

Related Comparisons

GPT-5 (medium) vs GPT-5.4GPT-5 (medium) vs Gemini 3.1 ProGPT-5 (medium) vs Claude Opus 4.6GPT-5 (medium) vs GPT-5.3 CodexGPT-5 (medium) vs Grok 4.1GPT-5 (medium) vs GPT-5.2