Popular models/GPT API Pricing
GPT API Pricing
GPT API pricing is the token list price for OpenAI GPT text models. Luna is the cheap tier; Sol is flagship. ChatGPT subscriptions are a separate purchase path, not API billing.
Official pricingAPI rates
| Model | Input | Output | Context |
|---|---|---|---|
GPT-5.6 Luna openai/gpt-5.6-luna | $0.20 | $1.20 | 922k |
GPT-5.6 Sol openai/gpt-5.6-sol | $4.00 | $20.00 | 922k |
GPT-5.6 Terra openai/gpt-5.6-terra | $2.00 | $12.00 | 922k |
GPT-5.6 Luna Pro openai/gpt-5.6-luna-pro | $0.20 | $1.20 | 1.05M |
gpt-oss-120b openai/gpt-oss-120b | $0.15 | $0.60 | 131.07k |
Subscriptions
Where to buy
Buy GPT API
- OpenAI API pricing
- OpenAI PlatformAPI keys and billing
ChatGPT subscription
FAQ
- GPT API pricing vs ChatGPT Plus?
- Use the API for products and metered usage. Use Plus / Pro for ChatGPT itself. Billing and accounts are separate.
- How different are Luna, Terra, and Sol prices?
- Luna is the low-cost tier, Terra sits in the middle, Sol is the flagship. The table uses current LiteLLM list prices.