GPT-5.2 Pro vs GLM-5 (Reasoning)

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

GPT-5.2 Pro is clearly ahead on the aggregate, 90 to 78. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GPT-5.2 Pro's sharpest advantage is in coding, where it averages 84.8 against 62.5. The single biggest benchmark swing on the page is LiveCodeBench, 81 to 58.

GPT-5.2 Pro gives you the larger context window at 400K, compared with 200K for GLM-5 (Reasoning).

Quick Verdict

Pick GPT-5.2 Pro if you want the stronger benchmark profile. GLM-5 (Reasoning) only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Agentic

GPT-5.2 Pro

GPT-5.2 Pro

85.9

GLM-5 (Reasoning)

78.3

88
Terminal-Bench 2.0
81
88
BrowseComp
80
82
OSWorld-Verified
74

Coding

GPT-5.2 Pro

GPT-5.2 Pro

84.8

GLM-5 (Reasoning)

62.5

93
HumanEval
88
83
SWE-bench Verified
62
81
LiveCodeBench
58
89
SWE-bench Pro
67

Multimodal & Grounded

GPT-5.2 Pro

GPT-5.2 Pro

96

GLM-5 (Reasoning)

78.5

96
MMMU-Pro
74
96
OfficeQA Pro
84

Reasoning

GPT-5.2 Pro

GPT-5.2 Pro

95.2

GLM-5 (Reasoning)

88.9

97
SimpleQA
92
95
MuSR
90
98
BBH
91
93
LongBench v2
86
95
MRCRv2
87

Knowledge

GPT-5.2 Pro

GPT-5.2 Pro

81.5

GLM-5 (Reasoning)

72

99
MMLU
96
99
GPQA
94
97
SuperGPQA
92
95
OpenBookQA
90
90
MMLU-Pro
81
44
HLE
29
93
FrontierScience
83

Instruction Following

GPT-5.2 Pro

GPT-5.2 Pro

95

GLM-5 (Reasoning)

92

95
IFEval
92

Multilingual

GPT-5.2 Pro

GPT-5.2 Pro

93.4

GLM-5 (Reasoning)

86.4

96
MGSM
89
92
MMLU-ProX
85

Mathematics

GPT-5.2 Pro

GPT-5.2 Pro

98.2

GLM-5 (Reasoning)

94.4

99
AIME 2023
98
99
AIME 2024
99
99
AIME 2025
98
96
HMMT Feb 2023
94
98
HMMT Feb 2024
96
97
HMMT Feb 2025
95
97
BRUMO 2025
96
99
MATH-500
92

Frequently Asked Questions

Which is better, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro is ahead overall, 90 to 78. The biggest single separator in this matchup is LiveCodeBench, where the scores are 81 and 58.

Which is better for knowledge tasks, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro has the edge for knowledge tasks in this comparison, averaging 81.5 versus 72. Inside this category, HLE is the benchmark that creates the most daylight between them.

Which is better for coding, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro has the edge for coding in this comparison, averaging 84.8 versus 62.5. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.

Which is better for math, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro has the edge for math in this comparison, averaging 98.2 versus 94.4. Inside this category, MATH-500 is the benchmark that creates the most daylight between them.

Which is better for reasoning, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro has the edge for reasoning in this comparison, averaging 95.2 versus 88.9. Inside this category, MRCRv2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro has the edge for agentic tasks in this comparison, averaging 85.9 versus 78.3. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 96 versus 78.5. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro has the edge for instruction following in this comparison, averaging 95 versus 92. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, GPT-5.2 Pro or GLM-5 (Reasoning)?

GPT-5.2 Pro has the edge for multilingual tasks in this comparison, averaging 93.4 versus 86.4. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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