Flux 2 API Python SDK for RunAPI

The Flux 2 Python SDK is the language-specific package for Flux 2 on RunAPI. Use this package for image generation, image editing, and creative production workflows when your application needs request bodies, task status lookup, and consistent RunAPI errors in Python.

This README is the Python package guide inside the public flux-2-sdk repository. For the repository overview, start at ../README.md; for model details, use https://runapi.ai/models/flux-2; for API reference, use https://runapi.ai/docs/api/flux-2/text-to-image; for SDK docs, use https://runapi.ai/docs/resources/sdks.

Install

pip install runapi-flux-2

Quick start

from runapi.flux_2 import Flux2Client

client = Flux2Client()  # reads RUNAPI_API_KEY, or pass api_key="sk-..."

task = client.text_to_image.create(
    model="flux-2-pro-text-to-image",
    prompt="A cinematic product photo on warm paper",
    aspect_ratio="1:1",
)
status = client.text_to_image.get(task.id)

remix = client.remix_image.create(
    model="flux-2-pro-remix-image",
    prompt="Turn this product shot into a warm editorial photo",
    source_image_urls=["https://cdn.runapi.ai/public/samples/image.jpg"],
    aspect_ratio="auto",
)

Use create when you want to submit a task and return quickly, get when you need the latest task state, and run when a script should create and poll until completion:

result = client.text_to_image.run(
    model="flux-2-pro-text-to-image",
    prompt="A futuristic cityscape at dusk",
)
print(result.images[0].url)

In web request handlers, prefer create plus webhook or later get polling so a worker is not held open.

Flux 2 Max

Use flux-2-max-text-to-image or flux-2-max-remix-image for the highest-quality tier. Max requires a concrete aspect_ratio, supports output_resolution="1k" and output_count=1 only, and accepts exactly one public HTTP(S) source image for remix.

RunAPI-generated file URLs are temporary. Download and store generated images, videos, audio, or other files in your own durable storage within 7 days; do not treat returned URLs as long-term assets.

Language notes

Pass parameters as keyword arguments and catch the runapi.flux_2 error classes when building image jobs or scripts. The available resources are text_to_image and remix_image. 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-2
• SDK docs: https://runapi.ai/docs/resources/sdks
• Product docs: https://runapi.ai/docs/api/flux-2/text-to-image
• Pricing and rate limits: https://runapi.ai/models/flux-2/pro-text-to-image
• Provider comparison: https://runapi.ai/providers/black-forest-labs
• Full catalog: https://runapi.ai/models
• Repository: https://github.com/runapi-ai/flux-2-sdk

License

Licensed under the Apache License, Version 2.0.