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FLUX.1 [dev]

High-fidelity text-to-image generation with excellent prompt adherence and typography.

black-forest-labs/flux.1-dev
Running· verified 5h ago · 2689ms

What is FLUX.1 [dev]?

FLUX.1 [dev] is Black Forest Labs's image model. High-fidelity text-to-image generation with excellent prompt adherence and typography. It runs on Speka's OpenAI-compatible /v1/images/generations endpoint at $0.04 per image, using the model ID black-forest-labs/flux.1-dev.

Test it live

Live playgroundFLUX.1 [dev]in-browser demo

Generate with FLUX.1 [dev]

Describe an image and generate a preview.

How to call FLUX.1 [dev] via the API

Speka exposes FLUX.1 [dev] on an OpenAI-compatible /v1/images/generations endpoint. Point any OpenAI SDK at https://speka.me/v1, set model to black-forest-labs/flux.1-dev, and your existing code runs unchanged.

quickstart.py
from openai import OpenAI

client = OpenAI(
    base_url="https://speka.me/v1",
    api_key="sk-speka-live-...",  # your Speka key
)

resp = client.images.generate(
    model="black-forest-labs/flux.1-dev",
    prompt="A neon city skyline at dusk, ultra-detailed",
)
print(resp.data[0].url)
FAQ

Frequently asked questions

FLUX.1 [dev] is Black Forest Labs's image model. High-fidelity text-to-image generation with excellent prompt adherence and typography. It is available on Speka's OpenAI-compatible API using the model ID black-forest-labs/flux.1-dev.
On Speka, FLUX.1 [dev] is priced at $0.04 per image. Pricing is per-token with no subscription or seat fee — usage is billed against your plan's monthly allowance, then at the same rate with no overage penalty. Rates are current as of June 2026; check the pricing page for updates.
Speka exposes FLUX.1 [dev] on an OpenAI-compatible /v1/images/generations endpoint. Set base_url to https://speka.me/v1, supply your Speka key, and set model to "black-forest-labs/flux.1-dev" in any OpenAI SDK — no other code changes are required.
Yes. FLUX.1 [dev] is served through Speka's OpenAI-compatible endpoint, so any application built on the OpenAI Python or Node.js SDK, LangChain, or LlamaIndex can call it by changing only the base URL and model ID.

More image models

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FLUX.1 [schnell]

Black Forest Labs
image

Fast few-step FLUX model — image generation in seconds, ideal for previews and high volume.

black-forest-labs/flux.1-schnell
Per image
$0.02
Open model