GPT-5.2-Codex vs Qwen3 235B 2507 (Reasoning)

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 31 (51 point difference).GPT-5.2-Codex wins 4 out of 4 categories.

Knowledge

GPT-5.2-Codex

GPT-5.2-Codex

96

Qwen3 235B 2507 (Reasoning)

37.8

99
MMLU
40
97
GPQA
39
95
SuperGPQA
37
93
OpenBookQA
35

Coding

GPT-5.2-Codex

GPT-5.2-Codex

95

Qwen3 235B 2507 (Reasoning)

32

95
HumanEval
32

Mathematics

GPT-5.2-Codex

GPT-5.2-Codex

97.1

Qwen3 235B 2507 (Reasoning)

39

99
AIME 2023
40
99
AIME 2024
42
98
AIME 2025
41
95
HMMT Feb 2023
36
97
HMMT Feb 2024
38
96
HMMT Feb 2025
37
96
BRUMO 2025
39

Reasoning

GPT-5.2-Codex

GPT-5.2-Codex

94

Qwen3 235B 2507 (Reasoning)

37

95
SimpleQA
38
93
MuSR
36

Frequently Asked Questions

Which is better, GPT-5.2-Codex or Qwen3 235B 2507 (Reasoning)?

GPT-5.2-Codex scores higher overall with 82 vs 31, a difference of 51 points across all benchmarks.

Which is better for knowledge tasks, GPT-5.2-Codex or Qwen3 235B 2507 (Reasoning)?

GPT-5.2-Codex leads in knowledge tasks with an average score of 96 vs 37.8.

Which is better for coding, GPT-5.2-Codex or Qwen3 235B 2507 (Reasoning)?

GPT-5.2-Codex leads in coding with an average score of 95 vs 32.

Which is better for math, GPT-5.2-Codex or Qwen3 235B 2507 (Reasoning)?

GPT-5.2-Codex leads in math with an average score of 97.1 vs 39.

Which is better for reasoning, GPT-5.2-Codex or Qwen3 235B 2507 (Reasoning)?

GPT-5.2-Codex leads in reasoning with an average score of 94 vs 37.