Navigate
Advertise here

Mercury 2.5 Preview (low) vs KAT Coder AIR V2.5 (low)

Mercury 2.5 Preview (low) leads on average score with 5.0 vs 5.0. Mercury 2.5 Preview (low) has the lower benchmark cost at $0.015 vs $0.046. Mercury 2.5 Preview (low) is faster at 4.92s vs 10.21s, with pass rates of 44.9% vs 42.0%.

Last updated at: 2026-10-12

Compared models

Rank
#319
Total Output Tokens
36,870
Response Time (avg)
4.92s
Total Cost
$0.015
Rank
#323
Total Output Tokens
60,414
Response Time (avg)
10.21s
Total Cost
$0.046
Recommended model Mercury 2.5 Preview (low)

It has the best score here (5.0), while costing about 3.0x less than KAT Coder AIR V2.5 (low).

Detailed comparison

Metric Mercury 2.5 Preview Mercury 2.5 Preview low Release: 2026-09-02 KAT Coder AIR V2.5 KAT Coder AIR V2.5 low Release: 2026-07-14
Score 5.0 5.0
Rank #319 #323
Reliability 9.9 9.9
Consistency 7.1 7.8
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 44.9% 42.0%
Flaky tests 8 6
Total Runs 69 69
Cost per result 0.244 0.649
Total Cost $0.015 $0.046
Input Price $0.040 / 1M $0.150 / 1M
Output Price $0.150 / 1M $0.600 / 1M
Cache Read Price N/A N/A
Cache Write Price N/A N/A
Total Input Tokens 235,438 61,094
Output Tokens 8,136 6,532
Reasoning Tokens 28,734 53,882
Response Time (avg) 4.92s 10.21s
Response Time (max) 84.47s 86.23s
Response Time (total) 113.24s 234.86s
Parameters ~100B ~35B total (~3B active)
Availability Closed Closed

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.

#319 Mercury 2.5 Preview

low
Cost
$0.001
Time
1.5s
Tokens
1,169 tok

#323 KAT Coder AIR V2.5

low
Cost
$0.004
Time
29.9s
Tokens
6,008 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
KAT Coder AIR V2.5 3.5 7.3 11.1% 1 11.06s 7,893 2,001 13,623

Switch Comparison Pair