tokevenGPTvsGPT
GPT 5.5 vs GPT 5.4
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5.5
FlagshipGPT 5.4
Mid-tierInput $/MTok
$5.00
$2.50
Output $/MTok
$30.00
$15.00
Cache discount
90% off
90% off
Context
1.1M
1.1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
65
vs
63
Code Review
90
vs
82
Summarization
70
vs
67
Q&A
90
vs
91
Extraction
78
vs
76
Reasoning
90
vs
88
Classification
85
vs
88
Creative Writing
73
vs
79
GPT 5.5
GPT 5.4
Guidance
When to use GPT 5.5 vs GPT 5.4
Choose GPT 5.5 when...
- -You need strong code review (confidence 90 vs 82)
- -You need strong reasoning (confidence 90 vs 88)
- -You need strong extraction (confidence 78 vs 76)
- -You need strong summarization (confidence 70 vs 67)
Choose GPT 5.4 when...
- -You need strong q&a (confidence 91 vs 90)
- -You need strong classification (confidence 88 vs 85)
- -You need strong creative writing (confidence 79 vs 73)
- -Cost matters: 50% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.5
GPT 5.4
100K tokens
$1.25
$0.63Cheaper
1M tokens
$20.50
$10.25Cheaper
10M tokens
$205.00
$102.50Cheaper
FAQ
When should I use GPT 5.5 instead of GPT 5.4?
GPT 5.5 outperforms GPT 5.4 for Code Generation, Code Review, Summarization. It costs $5.00/$30.00 per million tokens (input/output).
Is GPT 5.4 cheaper than GPT 5.5?
Yes. GPT 5.4 input costs $2.50/MTok vs $5.00/MTok for GPT 5.5, saving 50% on input.
What are the context window sizes for GPT 5.5 and GPT 5.4?
GPT 5.5 has a 1.1M token context window. GPT 5.4 has a 1.1M token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How GPT 5.5 and GPT 5.4 stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.