GPT-5.6 Luna API pricing
Lowest-cost tier in the GPT-5.6 family — drafts, routing, high-frequency calls. Available at about 50% below official list.
| Route | Input / 1M | Output / 1M |
|---|---|---|
| Official list price | $0.2 | $1.2 |
| Discounted route | $0.1 | $0.6 |
USD, standard tier, verified 2026-09-16.
Check live rates on the platform →Free to sign up · $1 minimum top-up · No prepayment
Specifications
| Vendor | OpenAI |
| Context window | 1.05M |
| Max output | 128K |
| Category | US frontier |
What GPT-5.6 Luna costs at your volume
Use the calculator to put your real token numbers against these rates.
Setting it up
- Claude Code — set the base URL via environment variables
- Cursor — override the API endpoint in settings
- OpenAI / Anthropic SDK — one
base_urlargument