GPT-5.5 Pro
openai-gpt-55-pro
Highest-accuracy GPT-5.5 tier for slower, precision-heavy reasoning and coding
Specification
most-agreed values
Context
1M
Max output
128K
Released
2026-04-24
Knowledge cutoff
2025-12-01
Retires
—
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · most-agreed
Input
$37.50
Output
$225.00
Available from 1 host
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| venice | $37.50 | $225.00 | — | — | 1M | 128K | — |
Other listings of this model
this page is one of them
The corpus files GPT-5.5 Pro under several keys. This page is the openai-gpt-55-pro listing. The full record — every host, every price and every benchmark score — is on the main GPT-5.5 Pro page.