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Mercury 2 (medium) vs KAT-Coder-Pro V2.5 (low)

The average score is effectively tied at 6.6 vs 6.5. Mercury 2 (medium) has the lower benchmark cost at $0.121 vs $0.400. Mercury 2 (medium) is faster at 4.40s vs 19.40s, with pass rates of 53.6% vs 65.2%.

Last updated at: 2026-10-01

Compared models

Rank
#189
Total Output Tokens
96,943
Response Time (avg)
4.40s
Total Cost
$0.121
Rank
#191
Total Output Tokens
113,193
Response Time (avg)
19.40s
Total Cost
$0.400
Recommended model Mercury 2 (medium)

It has the best score here (6.6), while costing about 3.3x less than KAT-Coder-Pro V2.5 (low).

Detailed comparison

Metric Mercury 2 Mercury 2 medium Release: 2026-02-24 KAT-Coder-Pro V2.5 KAT-Coder-Pro V2.5 low Release: 2026-07-14
Score 6.6 6.5
Rank #189 #191
Reliability 10.0 10.0
Consistency 8.1 7.1
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 53.6% 65.2%
Flaky tests 5 8
Total Runs 69 69
Cost per result 1.201 3.636
Total Cost $0.121 $0.400
Input Price $0.250 / 1M $0.740 / 1M
Output Price $0.750 / 1M $2.960 / 1M
Total Input Tokens 189,300 87,682
Output Tokens 10,854 7,166
Reasoning Tokens 86,089 106,027
Response Time (avg) 4.40s 19.40s
Response Time (max) 34.92s 209.15s
Response Time (total) 96.81s 446.11s
Parameters ~100B ~700B total (~72B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#189 Mercury 2

medium
Cost
$0.002
Time
2.1s
Tokens
1,702 tok

#191 KAT-Coder-Pro V2.5

low
Cost
$0.016
Time
47.6s
Tokens
5,182 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 8.2 7.7 77.8% 1 2.04s 7,065 296 11,328
KAT-Coder-Pro V2.5 7.8 10.0 66.7% 0 24.87s 7,893 402 24,945

Quick Compare

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