GLM-5 (Reasoning) vs Mercury 2

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

GLM-5 (Reasoning) is clearly ahead on the aggregate, 78 to 65. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GLM-5 (Reasoning)'s sharpest advantage is in coding, where it averages 62.5 against 41.1. The single biggest benchmark swing on the page is SWE-bench Pro, 67 to 43.

GLM-5 (Reasoning) gives you the larger context window at 200K, compared with 128K for Mercury 2.

Quick Verdict

Pick GLM-5 (Reasoning) if you want the stronger benchmark profile. Mercury 2 only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Agentic

GLM-5 (Reasoning)

GLM-5 (Reasoning)

78.3

Mercury 2

63.7

81
Terminal-Bench 2.0
63
80
BrowseComp
67
74
OSWorld-Verified
62

Coding

GLM-5 (Reasoning)

GLM-5 (Reasoning)

62.5

Mercury 2

41.1

88
HumanEval
75
62
SWE-bench Verified
46
58
LiveCodeBench
38
67
SWE-bench Pro
43

Multimodal & Grounded

GLM-5 (Reasoning)

GLM-5 (Reasoning)

78.5

Mercury 2

68.3

74
MMMU-Pro
66
84
OfficeQA Pro
71

Reasoning

GLM-5 (Reasoning)

GLM-5 (Reasoning)

88.9

Mercury 2

80.1

92
SimpleQA
82
90
MuSR
82
91
BBH
87
86
LongBench v2
77
87
MRCRv2
76

Knowledge

GLM-5 (Reasoning)

GLM-5 (Reasoning)

72

Mercury 2

57.2

96
MMLU
78
94
GPQA
78
92
SuperGPQA
76
90
OpenBookQA
74
81
MMLU-Pro
72
29
HLE
9
83
FrontierScience
69

Instruction Following

GLM-5 (Reasoning)

GLM-5 (Reasoning)

92

Mercury 2

84

92
IFEval
84

Multilingual

GLM-5 (Reasoning)

GLM-5 (Reasoning)

86.4

Mercury 2

79.7

89
MGSM
81
85
MMLU-ProX
79

Mathematics

GLM-5 (Reasoning)

GLM-5 (Reasoning)

94.4

Mercury 2

80.9

98
AIME 2023
81
99
AIME 2024
83
98
AIME 2025
82
94
HMMT Feb 2023
77
96
HMMT Feb 2024
79
95
HMMT Feb 2025
78
96
BRUMO 2025
80
92
MATH-500
82

Frequently Asked Questions

Which is better, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) is ahead overall, 78 to 65. The biggest single separator in this matchup is SWE-bench Pro, where the scores are 67 and 43.

Which is better for knowledge tasks, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) has the edge for knowledge tasks in this comparison, averaging 72 versus 57.2. Inside this category, HLE is the benchmark that creates the most daylight between them.

Which is better for coding, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) has the edge for coding in this comparison, averaging 62.5 versus 41.1. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.

Which is better for math, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) has the edge for math in this comparison, averaging 94.4 versus 80.9. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) has the edge for reasoning in this comparison, averaging 88.9 versus 80.1. Inside this category, MRCRv2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) has the edge for agentic tasks in this comparison, averaging 78.3 versus 63.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) has the edge for multimodal and grounded tasks in this comparison, averaging 78.5 versus 68.3. Inside this category, OfficeQA Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) has the edge for instruction following in this comparison, averaging 92 versus 84. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, GLM-5 (Reasoning) or Mercury 2?

GLM-5 (Reasoning) has the edge for multilingual tasks in this comparison, averaging 86.4 versus 79.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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