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

Last updated at: 2026-04-24

Metric DeepSeek V4 Flash DeepSeek V4 Flash high Release: 2026-04-24 Qwen3.5-27B Qwen3.5-27B medium Release: 2026-02-24
Score 7.8 8.4
Rank #37 #12
Reliability N/A N/A
Consistency 7.8 8.8
Tests Correct
Attempt pass rate 79.6% 81.5%
Flaky tests 5 3
Total Runs 52 54
Cost per result 0.189 3.822
Total Cost $0.021 $0.497
Input Price $0.140 / 1M $0.195 / 1M
Output Price $0.280 / 1M $1.560 / 1M
Output Tokens 1,757 2,500
Reasoning Tokens 55,907 242,500
Response Time (avg) 47.47s 53.03s
Response Time (max) 255.28s 163.96s
Response Time (total) 854.45s 954.46s

Top Models by Score

Score vs Total Cost

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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) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 8.3 10.0 75.0% 0 28.51s 140 7,770
Qwen3.5-27B 8.7 7.9 91.7% 1 19.75s 569 31,505
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 62.48s 369 9,361
Qwen3.5-27B 10.0 10.0 100.0% 0 70.35s 375 19,165
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 76.57s 465 7,347
Qwen3.5-27B 10.0 10.0 100.0% 0 163.96s 483 9,991
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 28.03s 201 1,179
Qwen3.5-27B 10.0 10.0 100.0% 0 30.26s 270 16,150
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 4.1 4.4 44.5% 2 112.69s 19 24,857
Qwen3.5-27B 5.3 10.0 33.3% 0 79.53s 43 52,368
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 6.1 3.1 66.7% 1 25.15s 79 632
Qwen3.5-27B 6.1 3.1 66.7% 1 101.41s 70 23,147
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 15.36s 63 1,622
Qwen3.5-27B 10.0 10.0 100.0% 0 19.66s 97 11,638
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 6.4 4.5 77.8% 2 25.53s 193 2,597
Qwen3.5-27B 8.2 7.7 77.8% 1 64.61s 245 77,213
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 74.73s 228 542
Qwen3.5-27B 10.0 10.0 100.0% 0 7.45s 348 1,323

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