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DeepSeek V4.1 Flash (medium) vs GPT-5.4 (medium)

GPT-5.4 (medium) leads on average score with 8.5 vs 8.5. DeepSeek V4.1 Flash (medium) has the lower benchmark cost at $0.272 vs $1.560. GPT-5.4 (medium) is faster at 22.85s vs 32.22s, with pass rates of 72.7% vs 77.3%.

Last updated at: 2026-09-10

Compared models

Rank
#53
Total Output Tokens
430,816
Response Time (avg)
32.22s
Total Cost
$0.272
Rank
#50
Total Output Tokens
90,466
Response Time (avg)
22.85s
Total Cost
$1.560
Recommended model DeepSeek V4.1 Flash (medium)

Its score stays close to the best score here (8.5 vs 8.5), while costing about 5.7x less than GPT-5.4 (medium).

Detailed comparison

Metric DeepSeek V4.1 Flash DeepSeek V4.1 Flash medium Release: 2026-09-10 GPT-5.4 GPT-5.4 medium Release: 2026-03-05
Score 8.5 8.5
Rank #53 #50
Reliability 9.5 10.0
Consistency 9.3 8.6
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 72.7% 77.3%
Flaky tests 2 4
Total Runs 66 66
Cost per result 1.812 10.399
Total Cost $0.272 $1.560
Input Price $0.150 / 1M $2.500 / 1M
Output Price $0.600 / 1M $15.000 / 1M
Total Input Tokens 88,508 81,136
Output Tokens 5,410 6,155
Reasoning Tokens 425,406 84,311
Response Time (avg) 32.22s 22.85s
Response Time (max) 276.31s 100.41s
Response Time (total) 708.76s 502.78s
Parameters 748B total (16B active) ~1.5T total (~100B active)
Availability Open source Closed

Model generation showcase

Hamster playing table tennis

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

#53 DeepSeek V4.1 Flash

medium
Cost
$0.014
Time
34.7s
Tokens
11,541 tok

#50 GPT-5.4

medium
Cost
$0.214
Time
199.6s
Tokens
14,349 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 10.0 10.0 100.0% 0 34.45s 7,509 396 71,345
GPT-5.4 8.8 7.8 88.9% 1 44.36s 7,305 433 24,216

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