{"uid":"cap_Wm-M0bpsC3DTJQspr-LWo","slug":"fal-ai-queue-flux-2-klein-4b-async-image-generation-5212af9a","name":"FLUX.2 Klein 4b (Async Image Generation)","description":"FLUX.2 Klein 4b (dynamic pricing)","url":"https://fal-queue.mpp.tempo.xyz/fal-ai/flux-2/klein/4b?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["ai","media"],"displayCostAmount":"unknown","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"unknown_unparsed","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"unknown","summary":"price unknown","primary":{"kind":"unknown","protocol":"mpp","network":"tempo","amountUsd":null,"per":"call","confidence":"unknown"},"accepted":[{"kind":"unknown","protocol":"mpp","network":"tempo","amountUsd":null,"per":"call","confidence":"unknown"}]},"paymentMethods":[{"uid":"pm_jW9biPwZil9The7ECq2F4","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"unknown","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":"fal.ai (queue)","brandSlug":"fal-ai-queue-mpp","brandBaseUrl":"https://fal.ai","brandDocsUrl":"https://fal.ai","whatItDoes":"Asynchronously generates images using the FLUX.2 Klein 4b model via fal.ai's queue system, returning a request ID for polling.","exampleAgentPrompt":"Generate an image of a moonlit forest with fog rolling between ancient pine trees, photorealistic style — use the FLUX.2 Klein 4b async queue so it doesn't time out.","exampleUseCases":[{"title":"AI artwork for blog post","prompt":"Create an image of a futuristic city skyline at sunset with flying cars and neon lights for my blog header — queue it through fal's FLUX Klein 4b model so I can poll for the result."},{"title":"Product concept visualization","prompt":"Generate a photorealistic image of a sleek white running shoe floating against a dark background with dramatic studio lighting using the FLUX.2 Klein 4b model."},{"title":"Fantasy character illustration","prompt":"Make me an image of a female elven archer in silver armor standing in a glowing enchanted forest, detailed fantasy art style — run it through the fal queue FLUX Klein 4b so I can fetch the result when it's done."}],"resultDescription":"Returns a request_id immediately upon submission. The agent can then poll the fal queue's status endpoint with that request_id to retrieve the final generated image URL and metadata once processing completes. Polling is free.","failureModes":["Invalid or missing prompt — returns 400 error","Dynamic pricing may fluctuate or be unavailable — pricing check required before call","Queue overload may cause extended wait times before result is ready","Polling timeout if agent does not retry with sufficient patience","Unsupported parameter values may cause generation failure"],"whenToPreferThis":"Choose this endpoint over fal.run (synchronous) when image generation is expected to exceed the ~100-second timeout threshold, or when you want to decouple submission from retrieval. Prefer the 4b variant over the 9b if you want a faster, lighter model at potentially lower cost. Use when you need the FLUX.2 Klein aesthetic specifically rather than FLUX.2 Pro or Seedream.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T07:02:35.290Z","isFirstParty":false,"canonicalSlug":"fal-ai-queue-flux-2-klein-4b-async-image-generation-5212af9a"}