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

Recommended model GPT-5.4 (medium)

Its score stays close to the best score here (8.5 vs 9.0), while costing about 2.7x less than GPT-5.5 (medium).

Detailed comparison

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

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

medium

medium

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		4.66s	606	250	1,335

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	8.8	7.8	88.9%	1		59.77s	7,305	362	24,959

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		33.52s	57,466	3,944	6,735

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		4.18s	7,140	234	593

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		74.27s	619	61	34,748
GPT-5.5	5.3	7.2	44.4%	1		164.14s	723	67	79,625

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		4.16s	477	138	223

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	10.0	10.0	100.0%	0		3.36s	660	93	538

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		6.76s	642	241	2,225

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		10.57s	5,445	258	832

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	2.8	1.6	33.3%	1		37.86s	195	30	1,754

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