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Mercury 2.5 Preview (high) vs GLM 5.2

GLM 5.2 leads on average score with 6.6 vs 6.5. Mercury 2.5 Preview (high) has the lower benchmark cost at $0.039 vs $0.152. Mercury 2.5 Preview (high) is faster at 7.61s vs 11.27s, with pass rates of 65.2% vs 63.8%.

Last updated at: 2026-10-01

Compared models

Rank
#194
Total Output Tokens
180,597
Response Time (avg)
7.61s
Total Cost
$0.039
Rank
#186
Total Output Tokens
17,685
Response Time (avg)
11.27s
Total Cost
$0.152
Recommended model Mercury 2.5 Preview (high)

Its score stays close to the best score here (6.5 vs 6.6), while costing about 4.0x less than GLM 5.2.

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview high Release: 2026-09-02 GLM 5.2 GLM 5.2 none Release: 2026-06-17
Score 6.5 6.6
Rank #194 #186
Reliability 9.9 10.0
Consistency 8.0 9.0
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 65.2% 63.8%
Flaky tests 6 3
Total Runs 69 69
Cost per result 0.319 1.753
Total Cost $0.039 $0.152
Input Price $0.000 / 1M $0.325 / 1M
Output Price $0.000 / 1M $3.990 / 1M
Total Input Tokens 298,512 247,919
Output Tokens 3,178 17,685
Reasoning Tokens 177,419 0
Response Time (avg) 7.61s 11.27s
Response Time (max) 86.84s 79.65s
Response Time (total) 175.08s 259.32s
Parameters ~100B 744B total (40B active)
Availability Closed Open source

Model generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#194 Mercury 2.5 Preview

high
Cost
$0.001
Time
4.5s
Tokens
3,851 tok

#186 GLM 5.2

none
Cost
$0.033
Time
87.7s
Tokens
7,455 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Mercury 2.5 Preview 6.7 7.8 55.6% 1 6.13s 7,751 485 42,569
GLM 5.2 3.7 9.5 0.0% 0 7.55s 7,263 1,958 0

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