{ "openapi": "3.1.0", "info": { "title": "Flux", "description": "The pro version of FLUX.1, served in partnership with BFL", "version": "v1.0.0" }, "servers": [ { "url": "https://fal.run" } ], "paths": { "/fal-ai/flux-pro": { "post": { "operationId": "FluxPro", "description": "FLUX.1 [pro], next generation text-to-image model.", "deprecated": false, "requestBody": { "content": { "application/json": { "schema": { "$ref": "#/components/schemas/TextToImageInputs" } } } } } }, "/fal-ai/flux/dev": { "post": { "operationId": "FluxDev", "description": "FLUX.1 [dev], next generation text-to-image model.", "deprecated": false, "requestBody": { "content": { "application/json": { "schema": { "$ref": "#/components/schemas/TextToImageInputs" } } } } } }, "/fal-ai/flux/schnell": { "post": { "operationId": "FluxSchnell", "description": "FLUX.1 [schnell], turbo mode for next generation text-to-image model FLUX.", "deprecated": false, "requestBody": { "content": { "application/json": { "schema": { "$ref": "#/components/schemas/TextToImageInputs" } } } } } }, "/fal-ai/flux/dev/image-to-image": { "post": { "operationId": "FluxDevImageToImage", "description": "Image to image version of FLUX.1 [dev], next generation image-to-image model.", "deprecated": false, "requestBody": { "content": { "application/json": { "schema": { "$ref": "#/components/schemas/ImageToImageInputs" } } } } } } }, "components": { "schemas": { "TextToImageInputs": { "title": "TextToImageInputs", "type": "object", "required": ["prompt", "image_size", "num_inference_steps", "guidance_scale"], "properties": { "prompt": { "type": "string", "description": "The prompt to generate an image from." }, "image_size": { "type": "string", "description": "The size of the generated image. Default value: `landscape_4_3`. Possible enum values: `square_hd`, `square`, `portrait_4_3`, `portrait_16_9`, `landscape_4_3`, `landscape_16_9`." }, "num_inference_steps": { "type": "integer", "description": "The number of inference steps to perform. Default value: 28" }, "seed": { "type": "integer", "description": "The same seed and the same prompt given to the same version of the model will output the same image every time." }, "guidance_scale": { "type": "number", "description": "The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you. Default value: 3.5" }, "num_images": { "type": "integer", "description": "The number of images to generate. Default value: 1" }, "enable_safety_checker": { "type": "boolean", "description": "If set to true, the safety checker will be enabled. Default value: true" } } }, "ImageToImageInputs": { "title": "ImageToImageInputs", "type": "object", "required": ["image_url", "prompt", "image_size", "num_inference_steps", "guidance_scale"], "properties": { "image_url": { "type": "string", "description": "The URL of the image to generate an image from." }, "prompt": { "type": "string", "description": "The prompt to generate an image from." }, "strength": { "type": "number", "description": "The strength of the initial image. Higher strength values are better for this model. Default value: 0.95" }, "image_size": { "type": "string", "description": "The size of the generated image. Default value: `landscape_4_3`. Possible enum values: `square_hd`, `square`, `portrait_4_3`, `portrait_16_9`, `landscape_4_3`, `landscape_16_9`." }, "num_inference_steps": { "type": "integer", "description": "The number of inference steps to perform. Default value: 28" }, "seed": { "type": "integer", "description": "The same seed and the same prompt given to the same version of the model will output the same image every time." }, "guidance_scale": { "type": "number", "description": "The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you. Default value: 3.5" }, "num_images": { "type": "integer", "description": "The number of images to generate. Default value: 1" }, "enable_safety_checker": { "type": "boolean", "description": "If set to true, the safety checker will be enabled. Default value: true" } } } } } }