Model pricing
GPT-5.3-Codex Spark API list price — cost per token
GPT-5.3-Codex Spark costs $1.75 per million input tokens and $14.00 per million output tokens (USD). Requests over 272K tokens are billed at a premium tier for the whole request.
| Token rate | USD / 1M tokens |
|---|---|
| Effortqualitative reasoning depth | High |
| Inputper 1M tokens | $1.75 |
| Output | $14.00 |
| Cache read0.1× input | $0.18 |
Notional list price. These are OpenAI (GPT-5.x / Codex) API list prices in USD. On a Codex subscription this is a notional list price — what usage would cost at API rates, not metered spend.
Cache & context economics
GPT-5.3-Codex Spark adds cache reads at $0.18 / 1M — about a tenth of input.
Common questions
- How much does GPT-5.3-Codex Spark cost per million tokens?
- $1.75 input and $14.00 output per million tokens (USD list price).
- What is the cache-read price for GPT-5.3-Codex Spark?
- $0.18 per million cached-read tokens — about a tenth of the input rate.
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 Meow