benchlm.ai

GPT-5.1-Codex-Max vs Qwen2.5-1M

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 66 (11 point difference).GPT-5.1-Codex-Max wins 4 out of 4 categories.

GPT-5.1-Codex-Max

CreatorOpenAI
TypeProprietary
Context400K
Score77

Qwen2.5-1M

CreatorAlibaba
TypeOpen Weight
Context1M
Score66

Knowledge

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

95

Qwen2.5-1M

81.8

98
MMLU
84
96
GPQA
83
94
SuperGPQA
81
92
OpenBookQA
79

Coding

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

94

Qwen2.5-1M

76

94
HumanEval
76

Mathematics

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

97.1

Qwen2.5-1M

84

99
AIME 2023
85
99
AIME 2024
87
98
AIME 2025
86
95
HMMT Feb 2023
81
97
HMMT Feb 2024
83
96
HMMT Feb 2025
82
96
BRUMO 2025
84

Reasoning

GPT-5.1-Codex-Max

GPT-5.1-Codex-Max

93

Qwen2.5-1M

80

94
SimpleQA
81
92
MuSR
79

Frequently Asked Questions

Which is better, GPT-5.1-Codex-Max or Qwen2.5-1M?

GPT-5.1-Codex-Max scores higher overall with 77 vs 66, a difference of 11 points across all benchmarks.

Which is better for knowledge tasks, GPT-5.1-Codex-Max or Qwen2.5-1M?

GPT-5.1-Codex-Max leads in knowledge tasks with an average score of 95 vs 81.8.

Which is better for coding, GPT-5.1-Codex-Max or Qwen2.5-1M?

GPT-5.1-Codex-Max leads in coding with an average score of 94 vs 76.

Which is better for math, GPT-5.1-Codex-Max or Qwen2.5-1M?

GPT-5.1-Codex-Max leads in math with an average score of 97.1 vs 84.

Which is better for reasoning, GPT-5.1-Codex-Max or Qwen2.5-1M?

GPT-5.1-Codex-Max leads in reasoning with an average score of 93 vs 80.

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