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Open CastalyConsole

Image

Image models

10 image models through Modelflare: GPT Images, Gemini native image, Wan, and Seedream, with the exact request contract and billing notes for each.

Image generation is not one contract. OpenAI-compatible models use /v1/images/*. Gemini image models use native generateContent. Use a Smart API Key or a key on the media group; see Authentication.

Your image request

OpenAI-compatible

POST /v1/images/generations

GPT Images, Wan Image, and Seedream.

Gemini native

POST /v1/models/{model}:generateContent

Text and reference images travel in the same contents[].parts[].

Sending a model to the wrong one is rejected with unsupported_endpoint.

Every row links to the model page with the exact request contract. Prices and availability come from the main site.

Model Endpoint Billing Pricing
gpt-image-2.5-sunburst POST /v1/images/generations Per token Pricing
gpt-image-2.5-flare POST /v1/images/generations Per token Pricing
gpt-image-2 POST /v1/images/generations Per token Pricing
Model Endpoint Billing Pricing
gemini-3-pro-image POST /v1/models/{model}:generateContent Per token Pricing
gemini-3.1-flash-image POST /v1/models/{model}:generateContent Per token Pricing
gemini-3.1-flash-lite-image POST /v1/models/{model}:generateContent Per token Pricing
gemini-2.5-flash-image POST /v1/models/{model}:generateContent Per call Pricing
Model Endpoint Billing Pricing
wan2.7-image POST /v1/images/generations Per call Pricing
wan2.7-image-pro POST /v1/images/generations Per call Pricing
seedream-5-0-lite-260128 POST /v1/images/generations Per image Pricing