Models & Pricing
Models & Pricing
Chat models
Prices are per million tokens, input and output priced separately. Models with cached-input pricing bill cache hits at a discount; the live rate is on GET /v1/models.
gpt-5.6-sol, gpt-5.6-terra, and gpt-5.6-luna are the only models that serve /v1/responses, in addition to chat completions. The other chat models serve chat completions only.
Requests that omit the output-limit field get a per-model default: 4,096 tokens for deepseek-v3.2, 8,192 tokens for every other chat model listed above.
Image generation models
Four models serve POST /v1/images/generations. Image requests are never billed by tokens — the price is fixed by the request itself and the receipt settles at exactly that amount.
FLUX — billed per megapixel
FLUX models accept any WIDTHxHEIGHT size with each side 256–2560 px and an area up to 4 megapixels, billed as ceil(width × height / 2²⁰) megapixels — a 1024x1024 image is 1 MP; 1600x1024 rounds up to 2 MP.
GPT Image — billed per image (quality × size)
gpt-image-2
gpt-image-1.5
Omitted size and quality default to 1024x1024 and high. Requesting n images multiplies the per-image price by n (up to 4). See Image Generation for the full parameter reference.
GET /v1/models is the authoritative live list, including current pricing. Prices on this page are current as of 2026-08-31. See Models & Receipts for the endpoint reference.