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

The average score is effectively tied at 5.0 vs 5.0. Mercury 2.5 Preview (low) has the lower benchmark cost at $0.015 vs $0.080. Mercury 2.5 Preview (low) is faster at 4.92s vs 63.06s, with pass rates of 44.9% vs 24.6%.

Last updated at: 2026-10-01

Compared models

Rank
#297
Total Output Tokens
36,870
Response Time (avg)
4.92s
Total Cost
$0.015
Rank
#296
Total Output Tokens
386,824
Response Time (avg)
63.06s
Total Cost
$0.080
Recommended model Mercury 2.5 Preview (low)

It has the best score here (5.0), while costing about 5.4x less than Laguna S 2.1 (medium).

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview low Release: 2026-09-02 Laguna S 2.1 Laguna S 2.1 medium Release: 2026-07-21 Free Available
Score 5.0 5.0
Rank #297 #296
Reliability 9.9 10.0
Consistency 7.1 8.5
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 44.9% 24.6%
Flaky tests 8 4
Total Runs 69 69
Cost per result 0.244 1.987
Total Cost $0.015 $0.080
Input Price $0.000 / 1M $0.090 / 1M
Output Price $0.000 / 1M $0.180 / 1M
Total Input Tokens 235,438 230,291
Output Tokens 8,136 99,030
Reasoning Tokens 28,734 287,794
Response Time (avg) 4.92s 63.06s
Response Time (max) 84.47s 560.31s
Response Time (total) 113.24s 1450.31s
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.

#297 Mercury 2.5 Preview

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

#296 Laguna S 2.1

medium
Cost
$0.001
Time
4.0s
Tokens
867 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 5.3 7.2 44.4% 1 158.98s 7,917 93,354 106,718

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