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KAT-Coder-Air V2.5 (low) vs Nemotron 3.5 Lightning (high)

Nemotron 3.5 Lightning (high) leads on average score with 5.6 vs 5.4. KAT-Coder-Air V2.5 (low) has the lower benchmark cost at $0.046 vs $0.134. KAT-Coder-Air V2.5 (low) is faster at 10.63s vs 58.26s, with pass rates of 43.9% vs 50.0%.

Last updated at: 2026-08-26

Rank
#223
Total Output Tokens
60,414
Response Time (avg)
10.63s
Total Cost
$0.046
Rank
#216
Total Output Tokens
654,597
Response Time (avg)
58.26s
Total Cost
$0.134
Recommended model KAT-Coder-Air V2.5 (low)

Its score stays close to the best score here (5.4 vs 5.6), while costing about 2.9x less than Nemotron 3.5 Lightning (high).

Detailed comparison

Metric KAT-Coder-Air V2.5 KAT-Coder-Air V2.5 low Release: 2026-07-14 Nemotron 3.5 Lightning Nemotron 3.5 Lightning high Release: 2026-08-11 Free Available
Score 5.4 5.6
Rank #223 #216
Reliability 9.9 9.9
Consistency 7.8 5.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 43.9% 50.0%
Flaky tests 6 12
Total Runs 66 66
Cost per result 0.649 0.000
Total Cost $0.046 $0.134
Input Price $0.150 / 1M $0.080 / 1M
Output Price $0.600 / 1M $0.200 / 1M
Total Input Tokens 61,094 118,016
Output Tokens 6,532 148,344
Reasoning Tokens 53,882 506,253
Response Time (avg) 10.63s 58.26s
Response Time (max) 86.23s 285.26s
Response Time (total) 233.77s 1281.79s
Parameters ~35B total (~3B active) 30B total (3B active)
Availability Closed Weights available

Model generation showcase

Hamster playing table tennis

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

#223 KAT-Coder-Air V2.5

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

#216 Nemotron 3.5 Lightning

high
Cost
$0.000
Time
92.8s
Tokens
11,343 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
Nemotron 3.5 Lightning 4.4 5.1 33.3% 2 168.41s 7,623 68,533 242,319

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