benchlm.ai

GPT-4 Turbo vs GPT-5.2-Codex

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

Quick Verdict

GPT-5.2-Codex wins overall with a score of 82 vs 50 (32 point difference).GPT-5.2-Codex wins 4 out of 4 categories.

GPT-4 Turbo

CreatorOpenAI
TypeProprietary
Context128K
Score50

GPT-5.2-Codex

CreatorOpenAI
TypeProprietary
Context400K
Score82

Knowledge

GPT-5.2-Codex

GPT-4 Turbo

58.5

GPT-5.2-Codex

96

60
MMLU
99
60
GPQA
97
58
SuperGPQA
95
56
OpenBookQA
93

Coding

GPT-5.2-Codex

GPT-4 Turbo

52

GPT-5.2-Codex

95

52
HumanEval
95

Mathematics

GPT-5.2-Codex

GPT-4 Turbo

59

GPT-5.2-Codex

97.1

60
AIME 2023
99
62
AIME 2024
99
61
AIME 2025
98
56
HMMT Feb 2023
95
58
HMMT Feb 2024
97
57
HMMT Feb 2025
96
59
BRUMO 2025
96

Reasoning

GPT-5.2-Codex

GPT-4 Turbo

57

GPT-5.2-Codex

94

58
SimpleQA
95
56
MuSR
93

Frequently Asked Questions

Which is better, GPT-4 Turbo or GPT-5.2-Codex?

GPT-5.2-Codex scores higher overall with 82 vs 50, a difference of 32 points across all benchmarks.

Which is better for knowledge tasks, GPT-4 Turbo or GPT-5.2-Codex?

GPT-5.2-Codex leads in knowledge tasks with an average score of 96 vs 58.5.

Which is better for coding, GPT-4 Turbo or GPT-5.2-Codex?

GPT-5.2-Codex leads in coding with an average score of 95 vs 52.

Which is better for math, GPT-4 Turbo or GPT-5.2-Codex?

GPT-5.2-Codex leads in math with an average score of 97.1 vs 59.

Which is better for reasoning, GPT-4 Turbo or GPT-5.2-Codex?

GPT-5.2-Codex leads in reasoning with an average score of 94 vs 57.

Related Comparisons

GPT-4 Turbo vs GPT-5.4GPT-4 Turbo vs Gemini 3.1 ProGPT-4 Turbo vs Claude Opus 4.6GPT-4 Turbo vs GPT-5.3 CodexGPT-4 Turbo vs Grok 4.1GPT-4 Turbo vs GPT-5.2