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DeepSeek: DeepSeek V4 Pro vs Qwen: Qwen3.5-Flash

Last updated at: 2026-05-28

Metric DeepSeek V4 Pro DeepSeek V4 Pro high Release: 2026-04-24 Qwen3.5-Flash Qwen3.5-Flash none Release: 2026-02-24
Score 6.6 5.9
Rank #85 #100
Reliability 8.9 10.0
Consistency 8.7 9.7
Tests Correct
Attempt pass rate 63.3% 41.7%
Flaky tests 3 1
Total Runs 60 60
Cost per result 1.935 0.073
Total Cost $0.062 $0.004
Input Price $0.435 / 1M $0.065 / 1M
Output Price $0.870 / 1M $0.260 / 1M
Output Tokens 12,244 4,270
Reasoning Tokens 53,958 0
Response Time (avg) 58.92s 3.74s
Response Time (max) 358.35s 27.18s
Response Time (total) 1119.51s 74.71s

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) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 7.4 10.0 75.0% 0 16.53s 71 3,617
Qwen3.5-Flash 3.5 8.3 8.3% 1 1.32s 690 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 2.8 5.0 25.0% 1 51.77s 105 2,641
Qwen3.5-Flash 6.8 10.0 50.0% 0 993ms 513 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 65.02s 465 5,914
Qwen3.5-Flash 3.0 10.0 0.0% 0 6.22s 1,794 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 8.8 10.0 100.0% 0 23.62s 229 1,710
Qwen3.5-Flash 10.0 10.0 100.0% 0 1.57s 243 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 3.0 6.9 16.7% 1 205.66s 10,529 28,089
Qwen3.5-Flash 7.7 10.0 66.7% 0 905ms 15 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 6.1 3.1 66.7% 1 25.09s 76 1,152
Qwen3.5-Flash 10.0 10.0 100.0% 0 803ms 100 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 41.16s 205 2,416
Qwen3.5-Flash 6.3 10.0 50.0% 0 8.81s 63 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 6.9 10.0 66.7% 0 34.84s 139 4,019
Qwen3.5-Flash 3.1 10.0 0.0% 0 10.89s 579 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 10.0 10.0 100.0% 0 21.33s 372 593
Qwen3.5-Flash 10.0 10.0 100.0% 0 3.67s 264 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Pro 3.0 10.0 0.0% 0 39.14s 53 3,807
Qwen3.5-Flash 3.0 10.0 0.0% 0 588ms 9 0

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