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DeepSeek: DeepSeek V4 Flash vs Qwen: Qwen3.5-27B

Summary

DeepSeek V4 Flash vs Qwen3.5-27B benchmark comparison: The average score is effectively tied at 7.7 vs 7.8. DeepSeek V4 Flash has the lower benchmark cost at $0.029 vs $0.536. DeepSeek V4 Flash is faster at 45.85s vs 68.39s, with pass rates of 74.6% vs 73.0%.

Recommended model: DeepSeek V4 Flash - It has the best score here (7.7), while costing about 18.8x less than Qwen3.5-27B.

Last updated at: 2026-06-04

Metric DeepSeek V4 Flash DeepSeek V4 Flash high Release: 2026-04-24 Qwen3.5-27B Qwen3.5-27B medium Release: 2026-02-24
Score 7.7 7.8
Rank #31 #30
Reliability 10.0 10.0
Consistency 8.5 8.5
Tests Correct
Attempt pass rate 74.6% 73.0%
Flaky tests 4 4
Total Runs 63 63
Cost per result 0.299 4.901
Total Cost $0.029 $0.536
Input Price $0.099 / 1M $0.195 / 1M
Output Price $0.197 / 1M $1.560 / 1M
Total Input Tokens 39,745 42,164
Output Tokens 10,310 8,534
Reasoning Tokens 123,501 329,289
Response Time (avg) 45.85s 68.39s
Response Time (max) 218.13s 234.36s
Response Time (total) 962.79s 1436.24s

Generation showcase

Hamster playing table tennis

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

#31 DeepSeek V4 Flash

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

#30 Qwen3.5-27B

medium
Cost
$0.008
Time
62.0s
Tokens
3,099 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
Qwen3.5-27B 8.7 7.9 91.7% 1 19.75s 672 569 31,505
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
Qwen3.5-27B 6.2 7.1 55.6% 1 160.69s 7,895 6,381 89,388
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
Qwen3.5-27B 10.0 10.0 100.0% 0 163.96s 14,946 483 9,991
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
Qwen3.5-27B 10.0 10.0 100.0% 0 30.26s 7,782 270 16,150
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
Qwen3.5-27B 5.3 10.0 33.3% 0 79.53s 553 43 52,368
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
Qwen3.5-27B 6.1 3.1 66.7% 1 101.41s 524 70 23,147
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
Qwen3.5-27B 10.0 10.0 100.0% 0 19.66s 699 97 11,638
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
Qwen3.5-27B 8.2 7.7 77.8% 1 59.60s 696 242 70,096
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
Qwen3.5-27B 10.0 10.0 100.0% 0 7.45s 8,193 348 1,323
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
Qwen3.5-27B 3.0 10.0 0.0% 0 85.11s 204 31 23,683

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