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Kwaipilot: KAT-Coder-Air V2.5 vs Qwen: Qwen3.5 Plus 2026-04-20

Summary

KAT-Coder-Air V2.5 (low) leads on average score with 6.0 vs 5.5. KAT-Coder-Air V2.5 (low) has the lower benchmark cost at $0.030 vs $0.032. Qwen3.5 Plus 2026-04-20 is faster at 4.39s vs 6.47s, with pass rates of 46.0% vs 41.3%.

Recommended modelKAT-Coder-Air V2.5 (low)It has the strongest score in this comparison (6.0) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-14

Metric KAT-Coder-Air V2.5 KAT-Coder-Air V2.5 low Release: 2026-07-14 Qwen3.5 Plus 2026-04-20 Qwen3.5 Plus 2026-04-20 none Release: 2026-04-20
Score 6.0 5.5
Rank #124 #147
Reliability 9.7 10.0
Consistency 7.6 8.6
Tests Correct
Attempt pass rate 46.0% 41.3%
Flaky tests 6 4
Total Runs 63 63
Cost per result 0.427 0.595
Total Cost $0.030 $0.032
Input Price $0.150 / 1M $0.300 / 1M
Output Price $0.600 / 1M $1.800 / 1M
Total Input Tokens 42,464 38,910
Output Tokens 4,227 11,145
Reasoning Tokens 34,864 0
Response Time (avg) 6.47s 4.39s
Response Time (max) 25.49s 33.34s
Response Time (total) 135.80s 92.26s

Generation showcase

Hamster playing table tennis

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

#124 KAT-Coder-Air V2.5

low
Cost
$0.004
Time
29.9s
Tokens
6,008 tok

#147 Qwen3.5 Plus 2026-04-20

none
Cost
$0.008
Time
77.0s
Tokens
4,369 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 3.5 7.3 11.1% 1 11.06s 7,893 2,001 13,623
Qwen3.5 Plus 2026-04-20 3.9 7.8 11.1% 1 1.69s 7,913 480 0

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