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OpenAI: GPT-5.3-Codex vs Qwen: Qwen3.5 Plus 2026-02-15

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

Summary

Metric OpenAI: GPT-5.3-Codex medium Release: Unknown release date Qwen: Qwen3.5 Plus 2026-02-15 none Release: Unknown release date
Rank #7 #15
Score 7.93 6.29
Consistency 8.84 9.99
Cost per result 4.641 0.139
Total Cost $0.465 $0.012
Tests Correct
Wrong Tests 4 6
Attempt pass rate 78.6% 57.1%
Flaky tests 2 0
Output Tokens 1,201 1,499
Reasoning Tokens 30,056 0

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 216 1,421
Qwen: Qwen3.5 Plus 2026-02-15 4.00 10.00 33.3% 0 514 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 234 735
Qwen: Qwen3.5 Plus 2026-02-15 10.00 10.00 100.0% 0 243 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.3-Codex 4.00 7.21 55.6% 1 64 25,308
Qwen: Qwen3.5 Plus 2026-02-15 4.00 10.00 33.3% 0 15 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.3-Codex 9.00 10.00 50.0% 0 93 693
Qwen: Qwen3.5 Plus 2026-02-15 9.50 10.00 100.0% 0 71 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.3-Codex 7.00 7.38 77.8% 1 340 1,407
Qwen: Qwen3.5 Plus 2026-02-15 5.00 9.96 33.3% 0 434 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 254 492
Qwen: Qwen3.5 Plus 2026-02-15 10.00 10.00 100.0% 0 222 0

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