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OpenAI: GPT-5.4 Mini vs OpenAI: GPT-5.5

Last updated at: 2026-05-22

Metric GPT-5.4 Mini GPT-5.4 Mini medium Release: 2026-03-17 GPT-5.5 GPT-5.5 none Release: 2026-04-24
Score 7.1 6.5
Rank #65 #86
Reliability 10.0 10.0
Consistency 7.6 8.7
Tests Correct
Attempt pass rate 68.3% 56.7%
Flaky tests 6 3
Total Runs 60 60
Cost per result 4.867 2.165
Total Cost $0.487 $0.217
Input Price $0.750 / 1M $5.000 / 1M
Output Price $4.500 / 1M $30.000 / 1M
Output Tokens 2,186 1,949
Reasoning Tokens 100,706 0
Response Time (avg) 22.14s 1.94s
Response Time (max) 138.75s 5.56s
Response Time (total) 442.74s 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-5.4 Mini 8.6 7.9 91.7% 1 4.05s 296 2,876
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-5.4 Mini 7.5 6.0 83.3% 1 73.25s 446 32,513
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-5.4 Mini 10.0 10.0 100.0% 0 17.81s 317 4,317
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-5.4 Mini 10.0 10.0 100.0% 0 2.43s 234 650
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-5.4 Mini 4.1 4.4 44.5% 2 65.31s 60 43,286
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-5.4 Mini 4.5 10.0 0.0% 0 3.72s 150 510
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-5.4 Mini 7.4 6.7 66.7% 1 2.50s 129 1,337
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-5.4 Mini 7.8 10.0 66.7% 0 4.33s 271 2,449
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-5.4 Mini 4.7 1.6 66.7% 1 9.62s 251 2,594
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-5.4 Mini 3.0 10.0 0.0% 0 30.10s 32 10,174
GPT-5.5 3.0 10.0 0.0% 0 5.01s 18 0

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