{"uid":"cap_bIdR12Yid9fR3xmRPY_9B","slug":"fal-ai-v1-1-ultra-f469bc84","name":"FLUX1.1 Pro Ultra - 2K Text-to-Image Generation","description":"FLUX1.1 [pro] ultra - Up to 2K resolution with improved realism","url":"https://fal.mpp.tempo.xyz/fal-ai/flux-pro/v1.1-ultra?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["namespace","model","prompt"],"properties":{"model":{"type":"string","description":"The specific model variant (e.g. 'schnell', 'dev')"},"prompt":{"type":"string","description":"Text prompt describing the desired output"},"namespace":{"type":"string","description":"The model family/namespace (e.g. 'flux'), NOT 'fal-ai' which is already in the URL path"},"image_size":{"enum":["landscape_4_3","landscape_16_9","portrait_4_3","portrait_16_9","square","square_hd"],"type":"string","description":"Optional image size preset (e.g. 'landscape_4_3', 'square_hd')"}}},"responseSchema":{"type":"object","required":["seed","images","prompt","timings","has_nsfw_concepts"],"properties":{"seed":{"type":"number"},"images":{"type":"array","items":{"type":"object","required":["url","width","height","content_type"],"properties":{"url":{"type":"string"},"width":{"type":"number"},"height":{"type":"number"},"content_type":{"type":"string"}}}},"prompt":{"type":"string"},"timings":{"type":"object","required":[],"properties":{}},"has_nsfw_concepts":{"type":"array","items":{"type":"boolean"}}}},"example":null,"exampleRequest":null,"tags":["image","video","flux","stable-diffusion","grok","generation","ai","media"],"displayCostAmount":"0.06","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":6,"rating":{"score":"0.96","successRate":"1.00","reviews":6,"stars":"4.8","state":"rated"},"availabilityStatus":"healthy","priceObserved":{"p10Cents":"6.0000","medianCents":"6.0000","p90Cents":"6.0000","minCents":"6.0000","maxCents":"6.0000","p95Cents":"6.0000","sampleCount":5,"varies":false,"failureChargeRate":null},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.06/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.06","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.06","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_8m-4FWxVAovpRYxr-w_m3","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.06","costPer":"request","priority":0,"asset":"0x20c0000000000000000000000000000000000000","unit":"request","depositMicros":null,"planRef":null}],"brandName":"fal.ai","brandSlug":"fal-ai","brandBaseUrl":"https://fal.ai","brandDocsUrl":"https://fal.ai/docs","whatItDoes":"Generates photorealistic images up to 2K resolution from text prompts using FLUX1.1 [pro] ultra model with enhanced realism","exampleAgentPrompt":"Generate a photorealistic 2K image of a misty mountain lake at sunrise with pine trees reflected in the water and warm golden light, using 16:9 aspect ratio and 50 inference steps — I want it cinematic and ultra-detailed.","exampleUseCases":null,"resultDescription":"Returns a JSON object containing the image URL (hosted on fal.media CDN), image dimensions (width and height in pixels, up to 2K resolution), content type (image/jpeg), the seed used for generation, NSFW detection flags, and the resolved prompt text.","failureModes":["Prompt triggers NSFW filter — has_nsfw_concepts returns true and image may be withheld","Invalid aspect_ratio value — returns 422 validation error","num_inference_steps out of valid range — returns 400 or 422 error","Payment failure (insufficient USDC balance) — returns 402 payment required","Model timeout for very complex prompts — returns 504 or timeout error","Empty or missing prompt — returns 400 bad request"],"whenToPreferThis":"Choose this endpoint when you need the highest resolution output (up to 2K) with maximum photorealism from the FLUX family. It is superior to FLUX1.1 [pro] standard when resolution and realism are paramount, and preferable over FLUX.1 [dev] for production-quality outputs. Best suited for cinematic scenes, professional photography simulations, marketing imagery, and any use case where ultra-detailed output justifies the $0.06/call price.","instructions":null,"reviewSummary":"FLUX1.1 Ultra consistently delivers 2K-resolution images (up to 2752×1536) with strong composition, lighting, and palette adherence across editorial, game art, and decorative styles, completing generations in roughly 15–40 seconds at $0.06 per image. Prompt control is reliable for layout, color, and mood directives, though the model struggles with text suppression — garbled or stray pseudo-text appears even when explicitly prohibited, requiring cropping or retouching. Overall sentiment is highly positive, with the text-rendering limitation being the only recurring flaw.","reviewSummaryHighlights":["Consistent 2K output with accurate composition, lighting, and palette control across diverse styles","Fast generation (~15–40s per image) with strong first-try success rate","Aspect ratio strings ('16:9', '4:3') reliably control output shape; response includes a fetchable image URL"],"reviewSummaryConcerns":["Reliably produces garbled or stray pseudo-text even when 'no text' is explicitly prompted — plan to crop or retouch","Style fidelity can drift; pixel-art or highly stylized requests may render as smoother illustrations"],"reviewSummaryGeneratedAt":"2026-09-25T20:15:07.647Z","activationCount":90,"lastUsedAt":"2026-10-05T07:00:15.495Z","lastSuccessfullyRanAt":"2026-10-05T06:51:58.122Z","lastHealthCheckAt":"2026-10-11T07:29:18.300Z","isFirstParty":false,"canonicalSlug":"fal-ai-v1-1-ultra-f469bc84"}