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OpenAI: GPT-5.2 vs OpenAI: GPT-5.5

Last updated at: 2026-05-22

Metric GPT-5.2 GPT-5.2 medium Release: 2025-12-11 GPT-5.5 GPT-5.5 none Release: 2026-04-24
Score 7.4 6.5
Rank #57 #86
Reliability 10.0 10.0
Consistency 8.3 8.7
Tests Correct
Attempt pass rate 70.0% 56.7%
Flaky tests 4 3
Total Runs 60 60
Cost per result 4.081 2.165
Total Cost $0.490 $0.217
Input Price $1.750 / 1M $5.000 / 1M
Output Price $14.000 / 1M $30.000 / 1M
Output Tokens 2,754 1,949
Reasoning Tokens 28,303 0
Response Time (avg) 16.44s 1.94s
Response Time (max) 77.80s 5.56s
Response Time (total) 213.77s 38.86s

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-5.2 6.5 8.0 58.3% 1 7.81s 567 2,002
GPT-5.5 6.9 7.9 66.7% 1 1.31s 213 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 10.0 10.0 100.0% 0 23.15s 490 8,269
GPT-5.5 6.8 10.0 50.0% 0 1.52s 447 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 10.0 10.0 100.0% 0 14.06s 291 1,757
GPT-5.5 3.0 10.0 0.0% 0 5.56s 300 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 10.0 10.0 100.0% 0 3.15s 234 420
GPT-5.5 10.0 10.0 100.0% 0 1.18s 222 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 5.9 7.2 55.6% 1 77.80s 42 10,342
GPT-5.5 2.9 7.2 11.1% 1 1.31s 52 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 3.7 9.7 0.0% 0 4.32s 162 269
GPT-5.5 10.0 10.0 100.0% 0 3.41s 124 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 9.9 10.0 100.0% 0 3.12s 94 614
GPT-5.5 6.2 5.8 66.7% 1 1.15s 81 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 7.6 7.3 77.8% 1 5.47s 609 938
GPT-5.5 7.7 10.0 66.7% 0 1.36s 245 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 4.7 1.6 66.7% 1 10.30s 239 469
GPT-5.5 10.0 10.0 100.0% 0 3.90s 247 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.2 3.0 10.0 0.0% 0 28.18s 26 3,223
GPT-5.5 3.0 10.0 0.0% 0 5.01s 18 0

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