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
128K
128K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
91
vs
84
Code Review
90
vs
82
Summarization
89
vs
91
Q&A
90
vs
91
Extraction
87
vs
89
Reasoning
95
vs
80
Classification
85
vs
88
Creative Writing
91
vs
78
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 reasoning (confidence 95 vs 80)
- -You need strong code generation (confidence 91 vs 84)
- -You need strong creative writing (confidence 91 vs 78)
- -You need strong code review (confidence 90 vs 82)
Choose GPT 5.4 when...
- -You need strong summarization (confidence 91 vs 89)
- -You need strong q&a (confidence 91 vs 90)
- -You need strong extraction (confidence 89 vs 87)
- -You need strong classification (confidence 88 vs 85)
- -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
$12.50
$6.25Cheaper
10M tokens
$125.00
$62.50Cheaper
FAQ
When should I use GPT 5.5 instead of GPT 5.4?
GPT 5.5 outperforms GPT 5.4 for Reasoning, Code Generation, Code Review. 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 128K token context window. GPT 5.4 has a 128K token context window.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.