GPT-5.4 (medium) vs GPT-5.5 (low)

Compared models

Rank: #50
Total Output Tokens: 90,466
Response Time (avg): 22.85s
Total Cost: $1.560

Rank: #16
Total Output Tokens: 28,540
Response Time (avg): 10.15s
Total Cost: $1.257

Recommended model GPT-5.5 (low)

It has the best score here (9.3), while responding about 2.3x faster than GPT-5.4 (medium).

Detailed comparison

Metric	GPT-5.4 GPT-5.4 medium Release: 2026-03-05	GPT-5.5 GPT-5.5 low Release: 2026-04-24

Metric	GPT-5.4 GPT-5.4 medium Release: 2026-03-05	GPT-5.5 GPT-5.5 low Release: 2026-04-24
Score	8.5	9.3
Rank	#50	#16
Reliability	10.0	10.0
Consistency	8.6	10.0
Attempts	66/66	66/66
Tests Correct
Attempt pass rate	77.3%	86.4%
Flaky tests	4	0
Total Runs	66	66
Cost per result	10.399	6.614
Total Cost	$1.560	$1.257
Input Price	$2.500 / 1M	$5.000 / 1M
Output Price	$15.000 / 1M	$30.000 / 1M
Total Input Tokens	81,136	80,067
Output Tokens	6,155	5,378
Reasoning Tokens	84,311	23,162
Response Time (avg)	22.85s	10.15s
Response Time (max)	100.41s	56.19s
Response Time (total)	502.78s	223.24s
Parameters	~1.5T total (~100B active)	~1.5T total (~100B active)
Availability	Closed	Closed

Model generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#50 GPT-5.4

medium

Cost: $0.214
Time: 199.6s
Tokens: 14,349 tok

#16 GPT-5.5

low

Cost: $0.068
Time: 37.0s
Tokens: 2,339 tok

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

Category:

Anti-AI Tricks	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	8.3	10.0	75.0%	0		4.11s	606	240	1,511
GPT-5.5	10.0	10.0	100.0%	0		4.41s	606	238	1,020

Coding	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	8.8	7.8	88.9%	1		44.36s	7,305	433	24,216
GPT-5.5	10.0	10.0	100.0%	0		15.04s	7,302	423	6,402

Combined	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	10.0	10.0	100.0%	0		29.77s	58,038	4,214	13,351
GPT-5.5	10.0	10.0	100.0%	0		13.73s	56,868	3,635	1,297

Data parsing and extraction	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	10.0	10.0	100.0%	0		5.32s	7,140	234	804
GPT-5.5	10.0	10.0	100.0%	0		3.28s	7,140	228	157

Domain specific	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	5.3	7.2	44.4%	1		72.44s	628	61	36,544
GPT-5.5	5.3	10.0	33.3%	0		28.19s	732	69	11,731

General Intelligence	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	4.7	3.1	33.3%	1		4.92s	477	145	321
GPT-5.5	10.0	10.0	100.0%	0		5.17s	477	133	245

Instructions following	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	10.0	10.0	100.0%	0		3.11s	660	93	897
GPT-5.5	9.9	10.0	100.0%	0		3.74s	660	93	415

Puzzle Solving	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	8.2	7.2	88.9%	1		9.14s	642	441	3,815
GPT-5.5	10.0	10.0	100.0%	0		4.74s	642	279	954

Tool Calling	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	10.0	10.0	100.0%	0		13.28s	5,445	264	1,031
GPT-5.5	10.0	10.0	100.0%	0		4.96s	5,445	250	101

Trivia	Score	Consistency	Attempt pass rate	Flaky tests	Tests Correct	Response Time (avg)	Input Tokens	Output Tokens	Reasoning Tokens
GPT-5.4	3.0	10.0	0.0%	0		13.95s	195	30	1,821
GPT-5.5	3.0	10.0	0.0%	0		10.06s	195	30	840

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