benchlm.ai

Gemma 3 27B vs GPT-5.1-Codex-Max

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 36 (41 point difference).GPT-5.1-Codex-Max wins 4 out of 4 categories.

Gemma 3 27B

CreatorGoogle
TypeOpen Weight
Context32K
Score36

GPT-5.1-Codex-Max

CreatorOpenAI
TypeProprietary
Context400K
Score77

Knowledge

GPT-5.1-Codex-Max

Gemma 3 27B

42.8

GPT-5.1-Codex-Max

95

45
MMLU
98
44
GPQA
96
42
SuperGPQA
94
40
OpenBookQA
92

Coding

GPT-5.1-Codex-Max

Gemma 3 27B

37

GPT-5.1-Codex-Max

94

37
HumanEval
94

Mathematics

GPT-5.1-Codex-Max

Gemma 3 27B

44

GPT-5.1-Codex-Max

97.1

45
AIME 2023
99
47
AIME 2024
99
46
AIME 2025
98
41
HMMT Feb 2023
95
43
HMMT Feb 2024
97
42
HMMT Feb 2025
96
44
BRUMO 2025
96

Reasoning

GPT-5.1-Codex-Max

Gemma 3 27B

42

GPT-5.1-Codex-Max

93

43
SimpleQA
94
41
MuSR
92

Frequently Asked Questions

Which is better, Gemma 3 27B or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max scores higher overall with 77 vs 36, a difference of 41 points across all benchmarks.

Which is better for knowledge tasks, Gemma 3 27B or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max leads in knowledge tasks with an average score of 95 vs 42.8.

Which is better for coding, Gemma 3 27B or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max leads in coding with an average score of 94 vs 37.

Which is better for math, Gemma 3 27B or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max leads in math with an average score of 97.1 vs 44.

Which is better for reasoning, Gemma 3 27B or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max leads in reasoning with an average score of 93 vs 42.

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