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Anthropic: Claude Sonnet 4.6 vs Qwen: Qwen3.5 Plus 2026-02-15

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Last updated at : 2026-02-27 15:16

Summary

Metric Anthropic: Claude Sonnet 4.6 medium Release: Unknown release date Qwen: Qwen3.5 Plus 2026-02-15 medium Release: Unknown release date
Rank #8 #4
Score 7.43 8.64
Consistency 9.40 10.00
Cost per result 8.105 1.955
Total Cost $0.811 $0.235
Tests Correct
Wrong Tests 4 2
Attempt pass rate 73.8% 85.7%
Flaky tests 1 0
Output Tokens 29,098 1,258
Reasoning Tokens 20,435 93,374

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Sonnet 4.6 7.00 10.00 66.7% 0 1,031 1,093
Qwen: Qwen3.5 Plus 2026-02-15 10.00 10.00 100.0% 0 186 5,926
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Sonnet 4.6 10.00 10.00 100.0% 0 727 907
Qwen: Qwen3.5 Plus 2026-02-15 10.00 10.00 100.0% 0 283 14,892
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Sonnet 4.6 1.00 7.21 11.1% 1 25,790 16,919
Qwen: Qwen3.5 Plus 2026-02-15 4.00 10.00 33.3% 0 56 39,882
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Sonnet 4.6 10.00 10.00 100.0% 0 316 523
Qwen: Qwen3.5 Plus 2026-02-15 9.50 9.99 100.0% 0 102 9,257
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Sonnet 4.6 10.00 10.00 100.0% 0 579 642
Qwen: Qwen3.5 Plus 2026-02-15 10.00 10.00 100.0% 0 322 22,508
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Sonnet 4.6 10.00 10.00 100.0% 0 655 351
Qwen: Qwen3.5 Plus 2026-02-15 10.00 10.00 100.0% 0 309 909

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