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Mercury 2.5 vs Nemotron 3.5 Lightning

Mercury 2.5 leads on average score with 4.1 vs 3.8. Nemotron 3.5 Lightning has the lower benchmark cost at $0.009 vs $0.026. Mercury 2.5 is faster at 5.10s vs 15.92s, with pass rates of 24.6% vs 15.9%.

Last updated at: 2026-10-19

Compared models

Rank
#397
Total Output Tokens
89,958
Response Time (avg)
5.10s
Total Cost
$0.026
Rank
#406
Total Output Tokens
4,779
Response Time (avg)
15.92s
Total Cost
$0.009
Recommended model Mercury 2.5

It has the best score here (4.1), while responding about 3.1x faster than Nemotron 3.5 Lightning.

Detailed comparison

Metric Mercury 2.5 Mercury 2.5 none Release: 2026-09-08 Nemotron 3.5 Lightning Nemotron 3.5 Lightning none Release: 2026-08-11 Free Available
Score 4.1 3.8
Rank #397 #406
Reliability 10.0 9.8
Consistency 7.6 9.3
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 24.6% 15.9%
Flaky tests 7 2
Total Runs 69 69
Cost per result 1.298 0.000
Total Cost $0.026 $0.009
Input Price $0.040 / 1M $0.060 / 1M
Output Price $0.150 / 1M $0.160 / 1M
Cache Read Price $0.004 / 1M $0.030 / 1M
Cache Write Price N/A N/A
Total Input Tokens 311,488 97,418
Output Tokens 89,958 4,779
Reasoning Tokens 0 0
Response Time (avg) 5.10s 15.92s
Response Time (max) 63.41s 339.57s
Response Time (total) 117.24s 366.20s
Parameters ~100B 30B total (3B 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.

#397 Mercury 2.5

none
Cost
$0.001
Time
2.7s
Tokens
2,749 tok

#406 Nemotron 3.5 Lightning

none
Cost
$0.000
Time
101.6s
Tokens
6,775 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 3.7 7.0 22.2% 1 12.50s 7,888 61,297 0
Nemotron 3.5 Lightning 3.1 7.2 11.1% 1 1.55s 7,623 589 0

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