benchlm.ai

GPT-5.1-Codex-Max vs Llama 4 Behemoth

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

Quick Verdict

GPT-5.1-Codex-Max wins overall with a score of 77 vs 39 (38 point difference).GPT-5.1-Codex-Max wins 4 out of 4 categories.

GPT-5.1-Codex-Max

CreatorOpenAI
TypeProprietary
Context400K
Score77

Llama 4 Behemoth

CreatorMeta
TypeOpen Weight
Context32K
Score39

Knowledge

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

95

Llama 4 Behemoth

45.8

98
MMLU
48
96
GPQA
47
94
SuperGPQA
45
92
OpenBookQA
43

Coding

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

94

Llama 4 Behemoth

40

94
HumanEval
40

Mathematics

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

97.1

Llama 4 Behemoth

47

99
AIME 2023
48
99
AIME 2024
50
98
AIME 2025
49
95
HMMT Feb 2023
44
97
HMMT Feb 2024
46
96
HMMT Feb 2025
45
96
BRUMO 2025
47

Reasoning

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

93

Llama 4 Behemoth

45

94
SimpleQA
46
92
MuSR
44

Frequently Asked Questions

Which is better, GPT-5.1-Codex-Max or Llama 4 Behemoth?

GPT-5.1-Codex-Max scores higher overall with 77 vs 39, a difference of 38 points across all benchmarks.

Which is better for knowledge tasks, GPT-5.1-Codex-Max or Llama 4 Behemoth?

GPT-5.1-Codex-Max leads in knowledge tasks with an average score of 95 vs 45.8.

Which is better for coding, GPT-5.1-Codex-Max or Llama 4 Behemoth?

GPT-5.1-Codex-Max leads in coding with an average score of 94 vs 40.

Which is better for math, GPT-5.1-Codex-Max or Llama 4 Behemoth?

GPT-5.1-Codex-Max leads in math with an average score of 97.1 vs 47.

Which is better for reasoning, GPT-5.1-Codex-Max or Llama 4 Behemoth?

GPT-5.1-Codex-Max leads in reasoning with an average score of 93 vs 45.

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