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Anthropic: Claude Sonnet 4.6 vs Qwen: Qwen3.5-Flash

Last updated at: 2026-04-14

Metric Claude Sonnet 4.6 Claude Sonnet 4.6 none Release: 2026-02-17 Qwen3.5-Flash Qwen3.5-Flash medium Release: 2026-02-24
Score 7.4 7.8
Rank #39 #30
Consistency 9.6 7.3
Tests Correct
Attempt pass rate 64.8% 81.5%
Flaky tests 1 6
Total Runs 54 54
Cost per result 2.376 0.719
Total Cost $0.262 $0.080
Input Price $3.000 / 1M $0.065 / 1M
Output Price $15.000 / 1M $0.260 / 1M
Output Tokens 7,433 2,073
Reasoning Tokens 0 191,899
Response Time (avg) 4.98s 66.72s
Response Time (max) 23.84s 234.29s
Response Time (total) 54.83s 1201.03s

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Score vs Total Cost

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Score vs Response Time (avg)

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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
Claude Sonnet 4.6 4.8 10.0 25.0% 0 2.94s 1,214 0
Qwen3.5-Flash 10.0 10.0 100.0% 0 59.11s 383 32,992
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 3.67s 523 0
Qwen3.5-Flash 4.7 1.6 66.7% 1 45.75s 246 12,600
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 9.5 10.0 100.0% 0 23.84s 3,766 0
Qwen3.5-Flash 10.0 10.0 100.0% 0 17.78s 483 8,270
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 3.43s 252 0
Qwen3.5-Flash 7.3 5.9 83.3% 1 56.99s 235 16,237
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 7.7 10.0 66.7% 0 3.54s 413 0
Qwen3.5-Flash 5.3 7.2 44.4% 1 146.50s 58 43,615
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 6.1 3.1 66.7% 1 2.56s 192 0
Qwen3.5-Flash 6.1 3.1 66.7% 1 40.05s 99 38,486
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 6.5 10.0 50.0% 0 1.96s 90 0
Qwen3.5-Flash 10.0 10.0 100.0% 0 63.49s 98 14,139
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 7.7 10.0 66.7% 0 2.92s 536 0
Qwen3.5-Flash 6.4 4.4 77.8% 2 56.74s 162 24,276
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 4.11s 447 0
Qwen3.5-Flash 10.0 10.0 100.0% 0 10.33s 309 1,284

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