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Mercury 2.5 Preview (medium) vs Particle-1

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 $0.059. Mercury 2.5 Preview (medium) is faster at 6.66s vs 8.61s, with pass rates of 66.7% vs 34.8%.

Last updated at: 2026-11-10

Compared models

Rank
#231
Total Output Tokens
150,107
Response Time (avg)
6.66s
Total Cost
$0.039
Rank
#312
Total Output Tokens
87,599
Response Time (avg)
8.61s
Total Cost
$0.059
Recommended model Mercury 2.5 Preview (medium)

It has the best score here (6.8), while costing about 1.5x less than Particle-1.

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview medium Release: 2026-09-02 Particle-1 Particle-1 none Release: 2026-10-28
Score 6.8 6.0
Rank #231 #312
Reliability 10.0 10.0
Consistency 9.6 9.4
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 66.7% 34.8%
Flaky tests 1 2
Total Runs 69 69
Cost per result 0.244 0.829
Total Cost $0.039 $0.059
Input Price $0.040 / 1M $0.050 / 1M
Output Price $0.150 / 1M $0.500 / 1M
Cache Read Price N/A $0.003 / 1M
Cache Write Price N/A N/A
Total Input Tokens 397,291 284,369
Output Tokens 6,355 87,599
Reasoning Tokens 143,752 0
Response Time (avg) 6.66s 8.61s
Response Time (max) 74.63s 107.90s
Response Time (total) 153.29s 198.13s
Parameters ~100B ~748B total (~16B 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.

#231 Mercury 2.5 Preview

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

#312 Particle-1

none
Cost
$0.001
Time
8.0s
Tokens
1,715 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
Particle-1 5.3 7.9 11.1% 1 36.78s 7,761 73,822 0

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