{"name":"image-generate-ultra","description":"Flagship text-to-image generation for top proprietary Venice models that fit a $0.22 retail price. Tiers: 'nano-banana' (nano-banana-pro, default, Google Gemini Image 3), 'nano-banana-2' (cheaper Google variant), 'nano-banana-lite' (nano-banana-2-lite budget variant), and 'grok-sota' (grok-imagine-image-quality). Output is capped to 1024x1024 to keep wholesale within retail; for GPT Image 2 use the dedicated gpt-image endpoint. Returns a permanent fal-hosted PNG URL.","price":"$0.22","method":"POST","input_schema":{"properties":{"prompt":{"type":"string","description":"Image description. Up to 5000 chars."},"width":{"type":"number","description":"Output width in pixels. Range [256, 1024]. Default 1024."},"height":{"type":"number","description":"Output height in pixels. Range [256, 1024]. Default 1024."},"tier":{"type":"string","enum":["nano-banana","nano-banana-2","nano-banana-lite","grok-sota"],"description":"Model shorthand. nano-banana=nano-banana-pro (default), nano-banana-2=nano-banana-2, nano-banana-lite=nano-banana-2-lite, grok-sota=grok-imagine-image-quality."},"model":{"type":"string","description":"Override the model. Allowed: nano-banana-pro, nano-banana-2, nano-banana-2-lite, grok-imagine-image-quality."},"steps":{"type":"number","description":"Diffusion steps. Optional; depends on model."},"cfg_scale":{"type":"number","description":"Classifier-free guidance scale. Optional."},"seed":{"type":"number","description":"Random seed. Optional."},"negative_prompt":{"type":"string","description":"Negative prompt. Optional."}},"required":["prompt"]},"input_example":{"prompt":"A tiger drinking espresso at a Parisian café, ultra-detailed, cinematic lighting","tier":"nano-banana"},"output_example":{"image_url":"https://v3.fal.media/files/abc/xyz/image.png","model":"nano-banana-pro","width":1024,"height":1024,"tier":"nano-banana","prompt":"A tiger drinking espresso at a Parisian café, ultra-detailed, cinematic lighting","seed":null,"elapsed_ms":25000,"venice_request_id":"ven_ultra_4f8a2b...","source":"venice"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}