runapi-ai / flux-kontext

v0.2.0 2026-09-30 12:27 UTC

Requires

• php: >=8.2
• runapi-ai/core: ^0.9.0

Requires (Dev)

• phpunit/phpunit: ^11.5

Apache-2.0

• RunAPI

• php
• api
• composer
• sdk
• packagist
• runapi
• runapi-ai
• flux-kontext
• flux-kontext-api

Published on Packagist.org on 2026-09-30 12:31 UTC

README

The Flux Kontext PHP SDK is the language-specific package for Flux Kontext on RunAPI. Use this package when your application needs Composer installs, associative-array request bodies, task status lookup, and consistent RunAPI errors in PHP.

This README is the PHP package guide for the public flux-kontext-php split repository. For model details, use https://runapi.ai/models/flux-kontext; for API reference, use https://runapi.ai/docs/api/flux-kontext/text-to-image; for SDK docs, use https://runapi.ai/docs/resources/sdks.

Install

composer require runapi-ai/flux-kontext

Quick start

<?php

require __DIR__ . "/vendor/autoload.php";

use RunApi\FluxKontext\FluxKontextClient;

$client = new FluxKontextClient(); // reads RUNAPI_API_KEY



$task = $client->textToImage->create([
    'model' => 'flux-kontext-max',
    'aspect_ratio' => '21:9',
    'enable_prompt_expansion' => true,
    'enable_translation' => true,
    'output_format' => 'jpeg',
    'prompt' => 'A precise product render on white marble',
    'safety_tolerance' => 1,
    'source_image_url' => 'https://cdn.runapi.ai/public/samples/image.jpg',
    'watermark' => 'sample',
]);

$status = $client->textToImage->get($task->id);

$result = $client->textToImage->run([
    'model' => 'flux-kontext-max',
    'aspect_ratio' => '21:9',
    'enable_prompt_expansion' => true,
    'enable_translation' => true,
    'output_format' => 'jpeg',
    'prompt' => 'A serene mountain lake at dawn',
    'safety_tolerance' => 1,
    'source_image_url' => 'https://cdn.runapi.ai/public/samples/image.jpg',
    'watermark' => 'sample',
]);

echo $result->images[0]->url . PHP_EOL;

Use create() to submit a task and return quickly, get() to fetch the latest task state, and run() when a script should create and poll until completion. In web request handlers, prefer create() plus webhook or later get() polling so a worker is not held open.

RunAPI-generated file URLs are temporary. Download and store generated files in your own durable storage within the retention window; do not treat returned URLs as long-term assets.

Language notes

Pass request parameters as associative arrays with snake_case keys. The available resources are textToImage. Keep RUNAPI_API_KEY in the environment or your secret manager; never commit API keys or callback secrets.

Links

• Model page: https://runapi.ai/models/flux-kontext
• SDK docs: https://runapi.ai/docs/resources/sdks
• Product docs: https://runapi.ai/docs/api/flux-kontext/text-to-image
• Pricing and rate limits: https://runapi.ai/models/flux-kontext/pro
• Full catalog: https://runapi.ai/models
• GitHub repository: https://github.com/runapi-ai/flux-kontext-php
• Multi-language SDK repository: https://github.com/runapi-ai/flux-kontext-sdk

License

Licensed under the Apache License, Version 2.0.