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Mercury 2.5 Preview — low vs none

low leads on average score with 5.0 vs 4.9. low has the lower benchmark cost at $0.011 vs $0.018. low is faster at 1.31s vs 3.51s, with pass rates of 47.0% vs 30.3%.

Last updated at: 2026-09-02

Rank
#254
Total Output Tokens
31,975
Response Time (avg)
1.31s
Total Cost
$0.011
Rank
#259
Total Output Tokens
82,585
Response Time (avg)
3.51s
Total Cost
$0.018
Recommended model low

It has the best score here (5.0), while costing about 1.7x less than Mercury 2.5 Preview.

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview low Release: 2026-09-02 Mercury 2.5 Preview Mercury 2.5 Preview none Release: 2026-09-02
Score 5.0 4.9
Rank #254 #259
Reliability 10.0 10.0
Consistency 7.0 8.3
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 47.0% 30.3%
Flaky tests 8 5
Total Runs 66 66
Cost per result 0.169 0.440
Total Cost $0.011 $0.018
Input Price $0.040 / 1M $0.040 / 1M
Output Price $0.150 / 1M $0.150 / 1M
Total Input Tokens 133,525 130,296
Output Tokens 7,259 82,585
Reasoning Tokens 24,716 0
Response Time (avg) 1.31s 3.51s
Response Time (max) 7.29s 60.70s
Response Time (total) 28.77s 77.28s
Parameters ~100B ~100B
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#254 Mercury 2.5 Preview

low
Cost
$0.001
Time
1.5s
Tokens
1,169 tok

#259 Mercury 2.5 Preview

none
Invalid SVG
Cost
$0.001
Time
3.3s
Tokens
3,122 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 5.5 10.0 33.3% 0 972ms 7,794 695 2,263
Mercury 2.5 Preview 4.7 7.9 22.2% 1 459ms 7,850 650 0

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