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OpenAI: GPT-5.2 vs OpenAI: GPT-5.3-Codex

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

Summary

Metric OpenAI: GPT-5.2 medium Release: Unknown release date OpenAI: GPT-5.3-Codex medium Release: Unknown release date
Rank #12 #7
Score 6.93 7.93
Consistency 8.22 8.84
Cost per result 2.780 4.641
Total Cost $0.251 $0.465
Tests Correct
Wrong Tests 5 4
Attempt pass rate 76.2% 78.6%
Flaky tests 3 2
Output Tokens 1,869 1,201
Reasoning Tokens 14,190 30,056

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.2 7.00 7.28 77.8% 1 549 2,002
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 216 1,421
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.2 10.00 10.00 100.0% 0 234 499
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 234 735
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.2 4.00 7.21 55.6% 1 42 9,690
OpenAI: GPT-5.3-Codex 4.00 7.21 55.6% 1 64 25,308
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.2 9.50 10.00 100.0% 0 95 587
OpenAI: GPT-5.3-Codex 9.00 10.00 50.0% 0 93 693
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.2 8.00 10.00 66.7% 0 710 943
OpenAI: GPT-5.3-Codex 7.00 7.38 77.8% 1 340 1,407
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5.2 1.00 1.62 66.7% 1 239 469
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 254 492

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