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OpenAI: GPT-5.3-Codex vs Qwen3.6 Plus Preview

Last updated at: 2026-03-30

Metric GPT-5.3-Codex GPT-5.3-Codex medium Release: 2026-02-05 Qwen3.6 Plus Preview Qwen3.6 Plus Preview medium Release: Unknown release date Free Available
Score 8.5 8.5
Rank #7 #6
Consistency 8.6 10.0
Tests Correct
Attempt pass rate 82.4% 76.5%
Flaky tests 3 0
Total Runs 51 49
Cost per result 4.526 0.000
Total Cost $0.544 $0.000
Input Price $1.750 / 1M $0.000 / 1M
Output Price $14.000 / 1M $0.000 / 1M
Output Tokens 1,788 1,756
Reasoning Tokens 33,649 77,213
Response Time (avg) 15.76s 13.94s
Response Time (max) 100.93s 43.55s
Response Time (total) 267.97s 237.01s

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
GPT-5.3-Codex 8.7 7.9 91.7% 1 4.16s 240 1,722
Qwen3.6 Plus Preview 10.0 10.0 100.0% 0 9.90s 207 7,557
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3-Codex 10.0 10.0 100.0% 0 19.56s 364 2,731
Qwen3.6 Plus Preview 10.0 10.0 100.0% 0 34.95s 452 13,073
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3-Codex 10.0 10.0 100.0% 0 3.07s 234 728
Qwen3.6 Plus Preview 10.0 10.0 100.0% 0 14.95s 270 10,706
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3-Codex 5.9 7.2 55.6% 1 64.31s 64 25,308
Qwen3.6 Plus Preview 3.0 10.0 0.0% 0 22.08s 49 26,895
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3-Codex 4.6 10.0 0.0% 0 4.87s 187 331
Qwen3.6 Plus Preview 5.1 10.0 0.0% 0 27.05s 111 5,232
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3-Codex 10.0 10.0 100.0% 0 3.04s 93 693
Qwen3.6 Plus Preview 10.0 10.0 100.0% 0 7.54s 102 5,552
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3-Codex 9.0 7.9 88.9% 1 5.12s 352 1,644
Qwen3.6 Plus Preview 10.0 10.0 100.0% 0 6.11s 298 6,868
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.3-Codex 10.0 10.0 100.0% 0 6.37s 254 492
Qwen3.6 Plus Preview 10.0 10.0 100.0% 0 5.87s 267 1,330

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