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DeepSeek V4.1 Flash vs KAT-Coder-Air V2.5 (low)

The average score is effectively tied at 5.4 vs 5.4. KAT-Coder-Air V2.5 (low) has the lower benchmark cost at $0.046 vs $0.185. KAT-Coder-Air V2.5 (low) is faster at 10.63s vs 14.85s, with pass rates of 34.9% vs 43.9%.

Last updated at: 2026-09-10

Compared models

Rank
#248
Total Output Tokens
273,780
Response Time (avg)
14.85s
Total Cost
$0.185
Rank
#250
Total Output Tokens
60,414
Response Time (avg)
10.63s
Total Cost
$0.046
Recommended model KAT-Coder-Air V2.5 (low)

It has the best score here (5.4), while costing about 4.1x less than DeepSeek V4.1 Flash.

Detailed comparison

Metric DeepSeek V4.1 Flash DeepSeek V4.1 Flash none Release: 2026-09-10 KAT-Coder-Air V2.5 KAT-Coder-Air V2.5 low Release: 2026-07-14
Score 5.4 5.4
Rank #248 #250
Reliability 9.6 9.9
Consistency 9.3 7.8
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 34.9% 43.9%
Flaky tests 2 6
Total Runs 66 66
Cost per result 2.642 0.649
Total Cost $0.185 $0.046
Input Price $0.150 / 1M $0.150 / 1M
Output Price $0.600 / 1M $0.600 / 1M
Total Input Tokens 137,687 61,094
Output Tokens 273,780 6,532
Reasoning Tokens 0 53,882
Response Time (avg) 14.85s 10.63s
Response Time (max) 247.66s 86.23s
Response Time (total) 326.72s 233.77s
Parameters 748B total (16B active) ~35B total (~3B active)
Availability Open source Closed

Model generation showcase

Hamster playing table tennis

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

#248 DeepSeek V4.1 Flash

none
Cost
$0.021
Time
55.4s
Tokens
17,181 tok

#250 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
DeepSeek V4.1 Flash 5.5 10.0 33.3% 0 83.66s 7,284 263,438 0
KAT-Coder-Air V2.5 3.5 7.3 11.1% 1 11.06s 7,893 2,001 13,623

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