FLUX 3 Video API

Black Forest Labs · model page

What FLUX 3 Video is

On 4 August 2026, Black Forest Labs wrote that an initial version of FLUX 3 Video for generation from text and images became generally available via the BFL API and selected partners. BFL describes clips with native audio generated alongside the video.

This page is the video root, distinct from FLUX 3 Image Klein. fal lists hosted blackforestlabs/flux-3 and flux-3-max video endpoints. bnrouter does not invent a gateway model id or a price for this page.

Official announcement: Read BFL’s FLUX 3 Video post (4 August 2026)

Where developers can use it

Black Forest Labs lists these official surfaces first. bnrouter is an optional OpenAI-compatible gateway in front of connected upstream accounts.

BFL API, as described in the 4 August 2026 video post
Selected BFL partners named in that post
Hosted fal blackforestlabs/flux-3 and flux-3-max video endpoints
bnrouter, if the operator has connected an upstream that serves this model. The plaza may still show coming soon — confirm the id in the console or GET /v1/models.

How to call it through bnrouter

bnrouter is an OpenAI-compatible AI API gateway. Create an API key in the console, then send requests to the gateway base URL. Chat completions may not be the right request shape for image or video generation — see the Image & video API docs for the images format this site already documents. This repository does not yet record a gateway model id — copy the id shown in the console (or from GET /v1/models) into the model field. The plaza listing may still show coming soon.

curl

curl https://www.bnrouter.com/v1/chat/completions \
  -H "Authorization: Bearer $YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "YOUR_MODEL_ID",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Python (OpenAI SDK)

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://www.bnrouter.com/v1",
)

resp = client.chat.completions.create(
    model="YOUR_MODEL_ID",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

Replace YOUR_API_KEY and YOUR_MODEL_ID with values from the console. Do not assume a model id that is not listed there.

Pricing

See current price in console.

Questions

What is FLUX 3 Video?

Black Forest Labs’ 4 August 2026 post describes FLUX 3 Video as generation from text and images through the BFL API, with native audio created alongside the video.

Is this the same page as FLUX 3 Image Klein?

No. This page covers the video endpoints. FLUX 3 Image Klein is a separate image root with its own landing page.

How do I call FLUX 3 Video through bnrouter?

Create a key in the console and confirm the model id there or via GET /v1/models. Chat completions may be a poor fit — see the Image & video API docs. The plaza may still show coming soon.

What model id should I send?

Use the identifier listed for this model in the console or returned by GET /v1/models. A gateway model id is not configured in this repository.

How much does the FLUX 3 Video API cost on bnrouter?