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Mercury 2.5 Preview vs Laguna S 2.1 (high)

Laguna S 2.1 (high) leads on average score with 4.9 vs 4.7. Mercury 2.5 Preview has the lower benchmark cost at $0.023 vs $0.145. Mercury 2.5 Preview is faster at 7.05s vs 113.63s, with pass rates of 29.0% vs 27.5%.

Last updated at: 2026-10-03

Compared models

Rank
#322
Total Output Tokens
86,367
Response Time (avg)
7.05s
Total Cost
$0.023
Rank
#313
Total Output Tokens
630,543
Response Time (avg)
113.63s
Total Cost
$0.145
Recommended model Mercury 2.5 Preview

Its score stays close to the best score here (4.7 vs 4.9), while costing about 6.3x less than Laguna S 2.1 (high).

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview none Release: 2026-09-02 Laguna S 2.1 Laguna S 2.1 high Release: 2026-07-21 Free Available
Score 4.7 4.9
Rank #322 #313
Reliability 9.9 10.0
Consistency 8.3 7.8
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 29.0% 27.5%
Flaky tests 5 6
Total Runs 69 69
Cost per result 0.559 3.664
Total Cost $0.023 $0.145
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 250,541 344,806
Output Tokens 86,367 177,330
Reasoning Tokens 0 453,213
Response Time (avg) 7.05s 113.63s
Response Time (max) 84.96s 1190.11s
Response Time (total) 162.25s 2613.48s
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.

#322 Mercury 2.5 Preview

none
Invalid SVG
Cost
$0.001
Time
3.3s
Tokens
3,122 tok

#313 Laguna S 2.1

high
Cost
$0.001
Time
6.8s
Tokens
1,389 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 5.3 7.2 44.4% 1 271.42s 6,496 59,355 151,009

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