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DeepSeek: DeepSeek V4 Flash vs OpenAI: GPT-5.4 Nano

Summary

DeepSeek V4 Flash vs GPT-5.4 Nano benchmark comparison: DeepSeek V4 Flash leads on average score with 8.3 vs 7.5. DeepSeek V4 Flash has the lower benchmark cost at $0.029 vs $0.107. GPT-5.4 Nano is faster at 11.95s vs 45.85s, with pass rates of 74.6% vs 63.5%.

Recommended model: DeepSeek V4 Flash - It has the best score here (8.3), while costing about 3.7x less than GPT-5.4 Nano.

Last updated at: 2026-06-12

Metric DeepSeek V4 Flash DeepSeek V4 Flash high Release: 2026-04-24 GPT-5.4 Nano GPT-5.4 Nano medium Release: 2026-03-17
Score 8.3 7.5
Rank #26 #48
Reliability 10.0 10.0
Consistency 8.5 8.4
Tests Correct
Attempt pass rate 74.6% 63.5%
Flaky tests 4 4
Total Runs 63 63
Cost per result 0.299 0.969
Total Cost $0.029 $0.107
Input Price $0.098 / 1M $0.200 / 1M
Output Price $0.196 / 1M $1.250 / 1M
Total Input Tokens 39,745 35,434
Output Tokens 10,310 3,014
Reasoning Tokens 123,501 76,520
Response Time (avg) 45.85s 11.95s
Response Time (max) 218.13s 94.06s
Response Time (total) 962.79s 250.98s

Generation showcase

Hamster playing table tennis

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

#26 DeepSeek V4 Flash

high
Cost
$0.003
Time
93.1s
Tokens
7,926 tok

#48 GPT-5.4 Nano

medium
Cost
$0.007
Time
24.6s
Tokens
4,943 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 8.3 10.0 75.0% 0 28.51s 540 140 7,770
GPT-5.4 Nano 8.3 10.0 75.0% 0 4.52s 606 683 2,254
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 7.8 10.0 66.7% 0 50.60s 7,279 395 34,862
GPT-5.4 Nano 6.1 4.7 66.7% 2 19.12s 7,305 516 20,778
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 76.57s 14,016 465 7,347
GPT-5.4 Nano 9.8 10.0 100.0% 0 24.13s 12,345 349 5,719
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 28.03s 7,290 201 1,179
GPT-5.4 Nano 10.0 10.0 100.0% 0 2.54s 7,140 234 516
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.1 4.4 44.5% 2 100.31s 666 27 59,249
GPT-5.4 Nano 5.9 7.2 55.6% 1 38.18s 619 60 43,325
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 6.1 3.1 66.7% 1 25.15s 471 79 632
GPT-5.4 Nano 4.5 10.0 0.0% 0 4.15s 477 179 443
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 15.36s 627 63 1,622
GPT-5.4 Nano 9.8 10.0 100.0% 0 1.88s 660 95 521
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 8.2 7.2 88.9% 1 26.11s 594 196 1,767
GPT-5.4 Nano 4.1 7.2 22.2% 1 3.79s 642 594 1,408
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 74.73s 8,079 228 542
GPT-5.4 Nano 10.0 10.0 100.0% 0 7.71s 5,445 234 382
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 3.0 10.0 0.0% 0 54.46s 183 8,516 8,531
GPT-5.4 Nano 3.0 10.0 0.0% 0 4.81s 195 70 1,174

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