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

Summary

DeepSeek V4 Flash vs Qwen3.5-27B benchmark comparison: Qwen3.5-27B leads on average score with 5.7 vs 5.0. DeepSeek V4 Flash has the lower benchmark cost at $0.008 vs $0.015. Qwen3.5-27B is faster at 1.68s vs 26.75s, with pass rates of 30.2% vs 38.1%.

Recommended model: Qwen3.5-27B - It has the best score here (5.7), while responding about 15.9x faster than DeepSeek V4 Flash.

Last updated at: 2026-06-04

Metric DeepSeek V4 Flash DeepSeek V4 Flash none Release: 2026-04-24 Qwen3.5-27B Qwen3.5-27B none Release: 2026-02-24
Score 5.0 5.7
Rank #139 #115
Reliability 10.0 10.0
Consistency 8.9 9.3
Tests Correct
Attempt pass rate 30.2% 38.1%
Flaky tests 3 2
Total Runs 63 63
Cost per result 0.203 0.249
Total Cost $0.008 $0.015
Input Price $0.099 / 1M $0.195 / 1M
Output Price $0.197 / 1M $1.560 / 1M
Total Input Tokens 50,127 44,478
Output Tokens 13,710 3,592
Reasoning Tokens 0 0
Response Time (avg) 26.75s 1.68s
Response Time (max) 111.96s 9.39s
Response Time (total) 561.82s 35.25s

Generation showcase

Hamster playing table tennis

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

#139 DeepSeek V4 Flash

none
Cost
$0.004
Time
157.6s
Tokens
11,297 tok

#115 Qwen3.5-27B

none
Cost
$0.007
Time
42.9s
Tokens
4,273 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 3.0 10.0 0.0% 0 20.18s 540 174 0
Qwen3.5-27B 4.8 10.0 25.0% 0 788ms 696 267 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.2 7.4 11.1% 1 17.13s 7,279 9,717 0
Qwen3.5-27B 5.8 10.0 33.3% 0 1.80s 7,913 415 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.5 2.1 66.7% 1 111.96s 24,398 2,664 0
Qwen3.5-27B 2.8 1.6 33.3% 1 9.39s 16,918 1,461 0
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 23.79s 7,290 195 0
Qwen3.5-27B 10.0 10.0 100.0% 0 1.43s 7,794 243 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 5.3 10.0 33.3% 0 19.73s 666 18 0
Qwen3.5-27B 3.0 10.0 0.0% 0 540ms 789 15 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.2 9.9 0.0% 0 23.74s 471 67 0
Qwen3.5-27B 5.0 10.0 0.0% 0 2.51s 522 126 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 6.5 10.0 50.0% 0 17.54s 627 321 0
Qwen3.5-27B 6.3 10.0 50.0% 0 1.03s 711 69 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
DeepSeek V4 Flash 3.1 7.3 11.1% 1 23.72s 594 207 0
Qwen3.5-27B 6.7 7.9 55.6% 1 1.38s 714 683 0
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 77.93s 8,079 327 0
Qwen3.5-27B 10.0 10.0 100.0% 0 3.54s 8,211 303 0
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 3.07s 183 20 0
Qwen3.5-27B 3.0 10.0 0.0% 0 599ms 210 10 0

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