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Mercury 2.5 (low) vs Mistral Small 4 (medium)

The average score is effectively tied at 5.1 vs 5.1. Mercury 2.5 (low) has the lower benchmark cost at $0.020 vs $0.126. Mercury 2.5 (low) is faster at 3.34s vs 12.68s, with pass rates of 37.7% vs 42.0%.

Last updated at: 2026-10-19

Compared models

Rank
#345
Total Output Tokens
40,302
Response Time (avg)
3.34s
Total Cost
$0.020
Rank
#343
Total Output Tokens
127,970
Response Time (avg)
12.68s
Total Cost
$0.126
Recommended model Mercury 2.5 (low)

It has the best score here (5.1), while costing about 6.6x less than Mistral Small 4 (medium).

Detailed comparison

Metric Mercury 2.5 Mercury 2.5 low Release: 2026-09-08 Mistral Small 4 Mistral Small 4 medium Release: 2026-03-16
Score 5.1 5.1
Rank #345 #343
Reliability 9.8 9.7
Consistency 8.2 7.1
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 37.7% 42.0%
Flaky tests 5 8
Total Runs 69 69
Cost per result 0.319 2.502
Total Cost $0.020 $0.126
Input Price $0.040 / 1M $0.150 / 1M
Output Price $0.150 / 1M $0.600 / 1M
Cache Read Price $0.004 / 1M $0.015 / 1M
Cache Write Price N/A N/A
Total Input Tokens 326,083 321,955
Output Tokens 7,224 41,555
Reasoning Tokens 33,078 94,946
Response Time (avg) 3.34s 12.68s
Response Time (max) 47.06s 59.15s
Response Time (total) 76.80s 291.66s
Parameters ~100B 119B total (6B active)
Availability Closed Open source

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

low
Cost
$0.001
Time
2.4s
Tokens
1,236 tok

#343 Mistral Small 4

medium
Cost
$0.006
Time
47.9s
Tokens
9,857 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 5.5 10.0 33.3% 0 972ms 7,909 521 2,269
Mistral Small 4 4.4 5.1 33.3% 2 39.98s 7,636 11,635 54,715

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