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Mercury 2.5 Preview (medium) vs GLM 5.1

Mercury 2.5 Preview (medium) leads on average score with 6.8 vs 6.5. Mercury 2.5 Preview (medium) has the lower benchmark cost at $0.039 vs $0.451. Mercury 2.5 Preview (medium) is faster at 6.66s vs 11.10s, with pass rates of 66.7% vs 47.8%.

Last updated at: 2026-10-05

Compared models

Rank
#176
Total Output Tokens
150,107
Response Time (avg)
6.66s
Total Cost
$0.039
Rank
#203
Total Output Tokens
20,076
Response Time (avg)
11.10s
Total Cost
$0.451
Recommended model Mercury 2.5 Preview (medium)

It has the best score here (6.8), while costing about 11.7x less than GLM 5.1.

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview medium Release: 2026-09-02 GLM 5.1 GLM 5.1 none Release: 2026-04-07
Score 6.8 6.5
Rank #176 #203
Reliability 10.0 10.0
Consistency 9.6 8.2
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 66.7% 47.8%
Flaky tests 1 5
Total Runs 69 69
Cost per result 0.244 3.478
Total Cost $0.039 $0.451
Input Price $0.040 / 1M $1.400 / 1M
Output Price $0.150 / 1M $4.400 / 1M
Cache Read Price N/A $0.260 / 1M
Cache Write Price N/A N/A
Total Input Tokens 397,291 258,956
Output Tokens 6,355 20,076
Reasoning Tokens 143,752 0
Response Time (avg) 6.66s 11.10s
Response Time (max) 74.63s 107.19s
Response Time (total) 153.29s 255.39s
Parameters ~100B 744B total (40B active)
Availability Closed Open source

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#176 Mercury 2.5 Preview

medium
Cost
$0.001
Time
2.7s
Tokens
2,241 tok

#203 GLM 5.1

none
Reached the allocated time limit (300 seconds) without receiving showcase output.
Cost
$0.000
Time
300.0s
Tokens
0 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 7.8 10.0 66.7% 0 3.86s 7,839 552 22,126
GLM 5.1 3.9 9.7 0.0% 0 4.96s 7,256 525 0

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