benchlm.ai

GPT-5.1-Codex-Max vs Grok 4.1

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

Quick Verdict

Grok 4.1 wins overall with a score of 84 vs 77 (7 point difference).Grok 4.1 wins 2 out of 4 categories.

GPT-5.1-Codex-Max

CreatorOpenAI
TypeProprietary
Context400K
Score77

Grok 4.1

CreatorxAI
TypeProprietary
Context128K
Score84

Knowledge

Grok 4.1

GPT-5.1-Codex-Max

95

Grok 4.1

96

98
MMLU
99
96
GPQA
97
94
SuperGPQA
95
92
OpenBookQA
93

Coding

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

94

Grok 4.1

91

94
HumanEval
91

Mathematics

Tie

GPT-5.1-Codex-Max

97.1

Grok 4.1

97.1

99
AIME 2023
99
99
AIME 2024
99
98
AIME 2025
98
95
HMMT Feb 2023
95
97
HMMT Feb 2024
97
96
HMMT Feb 2025
96
96
BRUMO 2025
96

Reasoning

Grok 4.1

GPT-5.1-Codex-Max

93

Grok 4.1

94

94
SimpleQA
95
92
MuSR
93

Frequently Asked Questions

Which is better, GPT-5.1-Codex-Max or Grok 4.1?

Grok 4.1 scores higher overall with 84 vs 77, a difference of 7 points across all benchmarks.

Which is better for knowledge tasks, GPT-5.1-Codex-Max or Grok 4.1?

Grok 4.1 leads in knowledge tasks with an average score of 96 vs 95.

Which is better for coding, GPT-5.1-Codex-Max or Grok 4.1?

GPT-5.1-Codex-Max leads in coding with an average score of 94 vs 91.

Which is better for math, GPT-5.1-Codex-Max or Grok 4.1?

GPT-5.1-Codex-Max and Grok 4.1 are tied for math with average scores of 97.1.

Which is better for reasoning, GPT-5.1-Codex-Max or Grok 4.1?

Grok 4.1 leads in reasoning with an average score of 94 vs 93.

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