Create a Replicate prediction

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"
    }
  }'

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}

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}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.cometapi.com/replicate/v1/models/{models}/predictions",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'input' => [
        'prompt' => 'A paper boat floating on calm water at sunrise.',
        'aspect_ratio' => '1:1',
        'output_format' => 'webp',
        'output_quality' => 80
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.cometapi.com/replicate/v1/models/{models}/predictions"

	payload := strings.NewReader("{\n  \"input\": {\n    \"prompt\": \"A paper boat floating on calm water at sunrise.\",\n    \"aspect_ratio\": \"1:1\",\n    \"output_format\": \"webp\",\n    \"output_quality\": 80\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.cometapi.com/replicate/v1/models/{models}/predictions")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"input\": {\n    \"prompt\": \"A paper boat floating on calm water at sunrise.\",\n    \"aspect_ratio\": \"1:1\",\n    \"output_format\": \"webp\",\n    \"output_quality\": 80\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cometapi.com/replicate/v1/models/{models}/predictions")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"input\": {\n    \"prompt\": \"A paper boat floating on calm water at sunrise.\",\n    \"aspect_ratio\": \"1:1\",\n    \"output_format\": \"webp\",\n    \"output_quality\": 80\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "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"
  }
}