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Mercury 2.5 Preview (medium) vs GLM 5.3 FlashX (low)

Mercury 2.5 Preview (medium) leads on average score with 6.8 vs 6.0. Mercury 2.5 Preview (medium) has the lower benchmark cost at $0.039 vs $0.157. Mercury 2.5 Preview (medium) is faster at 6.66s vs 9.69s, with pass rates of 66.7% vs 63.8%.

Last updated at: 2026-10-26

Compared models

Rank
#213
Total Output Tokens
150,107
Response Time (avg)
6.66s
Total Cost
$0.039
Rank
#293
Total Output Tokens
43,203
Response Time (avg)
9.69s
Total Cost
$0.157
Recommended model Mercury 2.5 Preview (medium)

It has the best score here (6.8), while costing about 4.1x less than GLM 5.3 FlashX (low).

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview medium Release: 2026-09-02 GLM 5.3 FlashX GLM 5.3 FlashX low Release: 2026-09-21
Score 6.8 6.0
Rank #213 #293
Reliability 10.0 10.0
Consistency 9.6 6.8
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 66.7% 63.8%
Flaky tests 1 9
Total Runs 69 69
Cost per result 0.244 1.423
Total Cost $0.039 $0.157
Input Price $0.040 / 1M $0.370 / 1M
Output Price $0.150 / 1M $1.250 / 1M
Cache Read Price N/A $0.090 / 1M
Cache Write Price N/A N/A
Total Input Tokens 397,291 277,028
Output Tokens 6,355 11,965
Reasoning Tokens 143,752 31,238
Response Time (avg) 6.66s 9.69s
Response Time (max) 74.63s 77.99s
Response Time (total) 153.29s 222.83s
Parameters ~100B 320B total (18B active)
Availability Closed Closed

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.

#213 Mercury 2.5 Preview

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

#293 GLM 5.3 FlashX

low
Cost
$0.002
Time
8.4s
Tokens
1,526 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 5.3 FlashX 5.5 7.4 44.4% 1 5.45s 7,317 382 4,760

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