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Kwaipilot: KAT-Coder-Air V2.5 vs Qwen: Qwen3.5-Flash

Summary

KAT-Coder-Air V2.5 (high) leads on average score with 6.2 vs 6.1. Qwen3.5-Flash has the lower benchmark cost at $0.005 vs $0.064. Qwen3.5-Flash is faster at 3.58s vs 11.02s, with pass rates of 46.0% vs 39.7%.

Recommended modelQwen3.5-FlashIts score stays close to the best score here (6.1 vs 6.2), while costing about 15.4x less than KAT-Coder-Air V2.5 (high).

Last updated at: 2026-07-14

Metric KAT-Coder-Air V2.5 KAT-Coder-Air V2.5 high Release: 2026-07-14 Qwen3.5-Flash Qwen3.5-Flash none Release: 2026-02-24
Score 6.2 6.1
Rank #110 #119
Reliability 9.7 10.0
Consistency 7.6 9.7
Tests Correct
Attempt pass rate 46.0% 39.7%
Flaky tests 6 1
Total Runs 63 63
Cost per result 0.910 0.075
Total Cost $0.064 $0.005
Input Price $0.150 / 1M $0.065 / 1M
Output Price $0.600 / 1M $0.260 / 1M
Total Input Tokens 41,748 46,439
Output Tokens 3,894 4,276
Reasoning Tokens 91,773 0
Response Time (avg) 11.02s 3.58s
Response Time (max) 104.98s 27.18s
Response Time (total) 231.37s 75.28s

Generation showcase

Hamster playing table tennis

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

#110 KAT-Coder-Air V2.5

high
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#119 Qwen3.5-Flash

none
Cost
$0.003
Time
47.4s
Tokens
7,799 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
KAT-Coder-Air V2.5 4.3 7.3 11.1% 1 39.07s 6,948 1,166 55,883
Qwen3.5-Flash 5.5 10.0 33.3% 0 850ms 7,913 519 0

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