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

Last updated at: 2026-04-29

Metric Claude Opus 4.6 Claude Opus 4.6 medium Release: 2026-02-05 Qwen3.5-Flash Qwen3.5-Flash medium Release: 2026-02-24
Score 7.6 7.8
Rank #49 #43
Reliability N/A N/A
Consistency 9.1 7.3
Tests Correct
Attempt pass rate 70.4% 81.5%
Flaky tests 2 6
Total Runs 54 54
Cost per result 12.047 0.719
Total Cost $1.446 $0.080
Input Price $5.000 / 1M $0.065 / 1M
Output Price $25.000 / 1M $0.260 / 1M
Output Tokens 29,829 2,073
Reasoning Tokens 18,938 191,899
Response Time (avg) 21.08s 66.72s
Response Time (max) 83.40s 234.29s
Response Time (total) 231.84s 1201.03s

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
Claude Opus 4.6 6.4 5.8 66.7% 2 7.45s 986 1,071
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 Opus 4.6 10.0 10.0 100.0% 0 23.11s 3,486 1,504
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 Opus 4.6 10.0 10.0 100.0% 0 76.66s 8,178 5,194
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 Opus 4.6 10.0 10.0 100.0% 0 7.37s 691 757
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 Opus 4.6 3.0 10.0 0.0% 0 83.40s 14,642 8,687
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 Opus 4.6 10.0 10.0 100.0% 0 5.04s 188 292
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 Opus 4.6 10.0 10.0 100.0% 0 2.43s 266 467
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 Opus 4.6 7.7 10.0 66.7% 0 4.60s 531 637
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 Opus 4.6 10.0 10.0 100.0% 0 9.73s 861 329
Qwen3.5-Flash 10.0 10.0 100.0% 0 10.33s 309 1,284

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