GPT-5 Pro API pricing: the official list and where to look next
GPT-5 Pro at list price: $15 input and $120 output per 1M tokens. No third-party quotes yet — we re-parse price lists daily.
| # | Provider | 1M input | 1M output | Discount | Tokens per $100 |
|---|---|---|---|---|---|
| — | Official list | $15.00 | $120.00 | 0% | 3.08M |
No third-party quotes yet — we check price lists daily.
Tokens per $100 assume a “code” mix: 5 input tokens per output token. Prices are crawled; verify them on the provider page before buying.
What to check before buying
- Test the key with the free API checker — it verifies the endpoint responds, without sending tokens.
- Compare the blended cost for your workload, not just the input price: output tokens dominate in agent workloads.
- Check uptime and minimum top-up: the cheapest provider is useless if it is down half the day.