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DeepSeek V4.1 Flash vs GPT-5 Nano (medium)

The average score is effectively tied at 5.8 vs 5.7. DeepSeek V4.1 Flash has the lower benchmark cost at $0.123 vs $0.139. DeepSeek V4.1 Flash is faster at 16.63s vs 56.55s, with pass rates of 36.2% vs 53.6%.

Last updated at: 2026-10-01

Compared models

Rank
#250
Total Output Tokens
292,779
Response Time (avg)
16.63s
Total Cost
$0.123
Rank
#254
Total Output Tokens
307,921
Response Time (avg)
56.55s
Total Cost
$0.139
Recommended model DeepSeek V4.1 Flash

It has the best score here (5.8), while responding about 3.4x faster than GPT-5 Nano (medium).

Detailed comparison

Metric DeepSeek V4.1 Flash DeepSeek V4.1 Flash none Release: 2026-09-10 GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07
Score 5.8 5.7
Rank #250 #254
Reliability 9.7 10.0
Consistency 9.1 6.5
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 36.2% 53.6%
Flaky tests 3 10
Total Runs 69 69
Cost per result 2.806 1.737
Total Cost $0.123 $0.139
Input Price $0.020 / 1M $0.050 / 1M
Output Price $0.396 / 1M $0.400 / 1M
Total Input Tokens 337,756 314,436
Output Tokens 292,779 13,578
Reasoning Tokens 0 294,343
Response Time (avg) 16.63s 56.55s
Response Time (max) 247.66s 227.89s
Response Time (total) 382.53s 961.32s
Parameters 748B total (16B active) ~120B total (~5B active)
Availability Open source Closed

Model generation showcase

Hamster playing table tennis

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

#250 DeepSeek V4.1 Flash

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

#254 GPT-5 Nano

medium
Cost
$0.006
Time
108.5s
Tokens
13,209 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
GPT-5 Nano 7.0 7.7 55.6% 1 41.62s 7,305 740 41,152

Quick Compare

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