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Mercury 2.5 Preview (low) vs Laguna S 2.1 (low)

The average score is effectively tied at 5.0 vs 5.0. Mercury 2.5 Preview (low) has the lower benchmark cost at $0.011 vs $0.082. Mercury 2.5 Preview (low) is faster at 1.31s vs 85.34s, with pass rates of 47.0% vs 22.7%.

Last updated at: 2026-09-02

Rank
#254
Total Output Tokens
31,975
Response Time (avg)
1.31s
Total Cost
$0.011
Rank
#255
Total Output Tokens
451,708
Response Time (avg)
85.34s
Total Cost
$0.082
Recommended model Mercury 2.5 Preview (low)

It has the best score here (5.0), while costing about 8.0x less than Laguna S 2.1 (low).

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview low Release: 2026-09-02 Laguna S 2.1 Laguna S 2.1 low Release: 2026-07-21 Free Available
Score 5.0 5.0
Rank #254 #255
Reliability 10.0 10.0
Consistency 7.0 8.0
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 47.0% 22.7%
Flaky tests 8 5
Total Runs 66 66
Cost per result 0.169 3.022
Total Cost $0.011 $0.082
Input Price $0.040 / 1M $0.090 / 1M
Output Price $0.150 / 1M $0.180 / 1M
Total Input Tokens 133,525 118,752
Output Tokens 7,259 67,823
Reasoning Tokens 24,716 383,885
Response Time (avg) 1.31s 85.34s
Response Time (max) 7.29s 814.73s
Response Time (total) 28.77s 1877.49s
Parameters ~100B 118B total (8B active)
Availability Closed Weights available

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

#255 Laguna S 2.1

low
Cost
$0.001
Time
6.6s
Tokens
1,314 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
Laguna S 2.1 3.8 7.1 22.2% 1 167.51s 7,917 58,111 119,138

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