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
2026-04-23
Knowledge cutoff
2025-12-01
Retires
—
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · most-agreed
Input
$30.00
Output
$180.00
Available from 1 host
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| venice | $30.00 | $180.00 | — | — | 1M | 128K | — |
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-09-02 | venice | Input | $37.50 |
| 2026-10-16 | venice | Input | $30.00 |
| 2026-09-02 | venice | Output | $225.00 |
| 2026-10-16 | venice | Output | $180.00 |
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.