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Mercury 2.5 Preview (low) vs Mistral Small 4

Mistral Small 4 leads on average score with 5.1 vs 5.0. Mercury 2.5 Preview (low) has the lower benchmark cost at $0.011 vs $0.022. Mistral Small 4 is faster at 1.20s vs 1.31s, with pass rates of 47.0% vs 25.8%.

Last updated at: 2026-09-02

Rank
#254
Total Output Tokens
31,975
Response Time (avg)
1.31s
Total Cost
$0.011
Rank
#245
Total Output Tokens
9,812
Response Time (avg)
1.20s
Total Cost
$0.022
Recommended model Mistral Small 4

It has the strongest score in this comparison (5.1) and the best overall balance of cost and response time across all 2 models.

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview low Release: 2026-09-02 Mistral Small 4 Mistral Small 4 none Release: 2026-03-16
Score 5.0 5.1
Rank #254 #245
Reliability 10.0 10.0
Consistency 7.0 9.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 47.0% 25.8%
Flaky tests 8 1
Total Runs 66 66
Cost per result 0.169 0.432
Total Cost $0.011 $0.022
Input Price $0.040 / 1M $0.150 / 1M
Output Price $0.150 / 1M $0.600 / 1M
Total Input Tokens 133,525 104,717
Output Tokens 7,259 9,812
Reasoning Tokens 24,716 0
Response Time (avg) 1.31s 1.20s
Response Time (max) 7.29s 13.16s
Response Time (total) 28.77s 26.41s
Parameters ~100B 119B total (6B active)
Availability Closed Open source

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

#245 Mistral Small 4

none
Cost
$0.002
Time
10.4s
Tokens
2,370 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
Mistral Small 4 3.7 9.7 0.0% 0 901ms 7,636 619 0

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