> ## Documentation Index > Fetch the complete documentation index at: https://apidoc.cometapi.com/llms.txt > Use this file to discover all available pages before exploring further. # Créer une prédiction Replicate > POST /replicate/v1/models/{models}/predictions crée des images FLUX via le format Replicate sur CometAPI, avec ratio d’aspect, qualité, format de sortie et ajustement des entrées. Utilisez cette route pour lancer une prédiction de type Replicate sur CometAPI et récupérer un id de prédiction pour une interrogation ultérieure. ## Checklist de la première requête * Placez chaque paramètre du modèle dans l’objet `input` * Commencez avec `black-forest-labs/flux-schnell` pour la première requête la plus rapide * Gardez la première requête en texte uniquement, sauf si vous avez spécifiquement besoin de `input_image` ou `input_images` * Enregistrez l’`id` de prédiction renvoyé pour les vérifications de statut ## Flux de la tâche Envoyez le model ID du chemin et l’objet `input` via ce endpoint. Enregistrez l’`id` renvoyé, car vous en aurez besoin pour l’interrogation ultérieure. Continuez avec [Obtenir une prédiction Replicate](./replicate-query) jusqu’à ce que `output` soit renseigné ou qu’une erreur apparaisse. ## OpenAPI ````yaml api/openapi/image/replicate/post-create-predictions-general.openapi.json POST /replicate/v1/models/{models}/predictions openapi: 3.1.0 info: title: Create Predictions - General API version: 1.0.0 description: >- Create a Replicate-style prediction on CometAPI and receive a prediction id for later polling. servers: - url: https://api.cometapi.com security: - bearerAuth: [] paths: /replicate/v1/models/{models}/predictions: post: summary: Create a Replicate prediction description: >- Submit a prediction request using a model id in the path and a provider-specific `input` object in the body. operationId: create_predictions_general parameters: - name: models in: path required: true description: >- Replicate model id, for example `black-forest-labs/flux-schnell` or `black-forest-labs/flux-kontext-pro`. schema: type: string requestBody: required: true content: application/json: schema: type: object required: - input properties: input: type: object description: >- Provider-specific model input. Keep all parameters inside this object. required: - prompt properties: prompt: type: string aspect_ratio: type: string description: >- Common aspect ratios supported by many FLUX models, for example `1:1`, `16:9`, `9:16`, `3:2`, or `2:3`. output_format: type: string enum: - webp - png - jpg - jpeg output_quality: type: integer minimum: 1 maximum: 100 input_image: type: string description: >- Single reference image URL or provider-supported image input for edit or context-aware models such as `flux-kontext-pro`. input_images: type: array description: >- Multiple reference images when the selected Replicate-compatible model supports them. items: type: string default: input: prompt: A paper boat floating on calm water at sunrise. aspect_ratio: '1:1' output_format: webp output_quality: 80 examples: Validated text-only request: summary: Validated text-only request value: input: prompt: A paper boat floating on calm water at sunrise. aspect_ratio: '1:1' output_format: webp output_quality: 80 responses: '200': description: Prediction accepted. content: application/json: schema: type: object required: - id - model - input - output - error - status - created_at - urls properties: id: type: string model: type: string version: type: string input: type: object logs: type: string output: type: - array - 'null' items: type: string data_removed: type: boolean error: type: - string - 'null' source: type: string status: type: string created_at: type: string urls: type: object properties: cancel: type: string get: type: string stream: type: string web: type: string example: id: q4chw5rey9rmt0cww76t4h3ma4 model: black-forest-labs/flux-schnell version: hidden input: aspect_ratio: '1:1' output_format: webp output_quality: 80 prompt: A paper boat floating on calm water at sunrise. logs: '' output: null data_removed: false error: null source: api status: starting created_at: '2026-03-12T11:27:18.258Z' urls: cancel: >- https://api.replicate.com/v1/predictions/q4chw5rey9rmt0cww76t4h3ma4/cancel get: >- https://api.replicate.com/v1/predictions/q4chw5rey9rmt0cww76t4h3ma4 stream: https://stream.replicate.com/v1/files/example web: https://replicate.com/p/q4chw5rey9rmt0cww76t4h3ma4 x-codeSamples: - lang: Shell label: Default source: > curl https://api.cometapi.com/replicate/v1/models/black-forest-labs/flux-schnell/predictions \ -H "Authorization: Bearer $COMETAPI_KEY" \ -H "Content-Type: application/json" \ -d '{ "input": { "prompt": "A paper boat floating on calm water at sunrise.", "aspect_ratio": "1:1", "output_format": "webp" } }' - lang: Python label: Default source: > import os import requests response = requests.post( "https://api.cometapi.com/replicate/v1/models/black-forest-labs/flux-schnell/predictions", headers={"Authorization": "Bearer " + os.environ["COMETAPI_KEY"]}, json={ "input": { "prompt": "A paper boat floating on calm water at sunrise.", "aspect_ratio": "1:1", "output_format": "webp", } }, ) prediction = response.json() print(prediction["id"], prediction["status"]) # poll GET /replicate/v1/predictions/{id} - lang: JavaScript label: Default source: > const response = await fetch( "https://api.cometapi.com/replicate/v1/models/black-forest-labs/flux-schnell/predictions", { method: "POST", headers: { Authorization: `Bearer ${process.env.COMETAPI_KEY}`, "Content-Type": "application/json", }, body: JSON.stringify({ input: { prompt: "A paper boat floating on calm water at sunrise.", aspect_ratio: "1:1", output_format: "webp", }, }), } ); const prediction = await response.json(); console.log(prediction.id, prediction.status); // poll GET /replicate/v1/predictions/{id} components: securitySchemes: bearerAuth: type: http scheme: bearer description: Bearer token authentication. Use your CometAPI key. ````