Model pricing
GPT-5.5 API list price — cost per token
GPT-5.5 costs $5.00 per million input tokens and $30.00 per million output tokens (USD). Requests at >272K tokens are billed at a premium tier for the whole request.
| Token rate | USD / 1M tokens |
|---|---|
| Effortqualitative reasoning depth | High |
| Inputper 1M tokens | $5.00 |
| Output | $30.00 |
| Cache readper 1M tokens | $0.50 |
| Input · >272K context | $10.00 |
| Output · >272K context | $45.00 |
Notional list price. These are OpenAI (GPT / Codex) API list prices in USD. On a Codex usage this is a notional list price — what usage would cost at API rates, not metered spend.
Cache & context economics
GPT-5.5 adds cache reads at $0.50 / 1M — about a tenth of input, a >272K tokens context tier that reprices the whole request.
Common questions
- How much does GPT-5.5 cost per million tokens?
- $5.00 input and $30.00 output per million tokens (USD list price).
- What is the cache-read price for GPT-5.5?
- $0.50 per million cached-read tokens — about a tenth of the input rate.
- Does GPT-5.5 have a context pricing tier?
- Yes — at >272K tokens input rises to $10.00 per million for the entire request.
Track your real cost with JP the Cat
A live menu-bar total, priced to the cent from your local logs — including the cache-write split most tools miss.
Download MeowPrefer Homebrew? Install the same signed, notarized app from JP's public tap.
brew tap 8bittts/jpthecat
brew trust 8bittts/jpthecat
brew install --cask jpthecat