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Mercury 2.5 Preview (default) vs Laguna S 2.1

The average score is effectively tied at 4.7 vs 4.7. Mercury 2.5 Preview (default) has the lower benchmark cost at $0.023 vs $0.044. Mercury 2.5 Preview (default) is faster at 7.05s vs 17.65s, with pass rates of 29.0% vs 14.5%.

Last updated at: 2026-10-13

Compared models

Rank
#345
Total Output Tokens
86,367
Response Time (avg)
7.05s
Total Cost
$0.023
Rank
#348
Total Output Tokens
99,097
Response Time (avg)
17.65s
Total Cost
$0.044
Recommended model Mercury 2.5 Preview (default)

It has the best score here (4.7), while costing about 1.9x less than Laguna S 2.1.

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview default Release: 2026-09-02 Laguna S 2.1 Laguna S 2.1 none Release: 2026-07-21 Free Available
Score 4.7 4.7
Rank #345 #348
Reliability 9.9 10.0
Consistency 8.3 8.8
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 29.0% 14.5%
Flaky tests 5 3
Total Runs 69 69
Cost per result 0.559 2.306
Total Cost $0.023 $0.044
Input Price $0.040 / 1M $0.090 / 1M
Output Price $0.150 / 1M $0.180 / 1M
Cache Read Price N/A $0.009 / 1M
Cache Write Price N/A N/A
Total Input Tokens 250,541 287,445
Output Tokens 86,367 99,097
Reasoning Tokens 0 0
Response Time (avg) 7.05s 17.65s
Response Time (max) 84.96s 200.52s
Response Time (total) 162.25s 406.05s
Parameters ~100B 118B total (8B active)
Availability Closed Weights available

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.

#345 Mercury 2.5 Preview

default
Invalid SVG
Cost
$0.001
Time
3.3s
Tokens
3,122 tok

#348 Laguna S 2.1

none
Cost
$0.001
Time
7.6s
Tokens
1,345 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 4.7 7.9 22.2% 1 459ms 7,850 650 0
Laguna S 2.1 3.4 9.7 0.0% 0 550ms 7,917 424 0

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