---
title: "The Ultimate Guide to FLUX 3 – Replicate blog"
url: https://daily.dev/posts/the-ultimate-guide-to-flux-3-replicate-blog-zxsuaoe7e
source_url: https://replicate.com/blog/flux-3
type: article
source: "Replicate"
published: 2026-08-10T06:16:14.353Z
updated: 2026-08-10T06:16:42.407Z
tags: ["multimodal", "video-generation"]
reading_time: 10
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# The Ultimate Guide to FLUX 3 – Replicate blog

**[Replicate](https://daily.dev/sources/replicate)** · 10 min read · 0 upvotes · 0 comments

## Summary

FLUX 3 is Black Forest Labs' new multimodal foundation model that generates video and audio in a single pass, trained jointly on images, video, and audio to better encode physical laws and temporal dynamics. The guide covers its key capabilities: text-to-video, image-to-video with start/end frames, video continuation via the start_video parameter, timestamped multi-scene prompting, and stylized outputs (claymation, comic-book, VHS). Code examples show how to run it via Replicate's SDK and Cloudflare AI Gateway. Prompting tips include describing audio explicitly, using timestamp syntax for multi-beat scenes, leading with camera direction, and keeping image-to-video prompts simple.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://replicate.com/blog/flux-3>

## Questions this post answers

### How do I run FLUX 3 on Replicate using the JavaScript SDK?

Import the Replicate SDK and call replicate.run('black-forest-labs/flux-3') with an input object specifying prompt, duration, resolution, aspect_ratio, and generate_audio. Optional parameters include image for a start frame, end_image for a morph target (requires whole-number duration), keyframe_images for storyboard mode (up to 10), and start_video to continue an existing clip.

_Developers shipping FLUX 3 integrations track API changes and new parameters on daily.dev._

### How do I prompt FLUX 3 for multiple camera cuts in a single generation?

Use timestamp syntax directly in the prompt: [0-4s]: wide establishing shot, [4-9s]: hard cut to close-up, [9-14s]: hard cut to wide shot. FLUX 3 interprets these as explicit cut points and produces the scene transitions in one generation without any post-processing stitching required.

_Teams building AI video pipelines share prompting patterns like these on daily.dev._

### Does FLUX 3 generate audio automatically, and how do I control what it sounds like?

FLUX 3 generates audio in the same forward pass as the video when generate_audio is set to true. Describing sounds explicitly in the prompt — such as 'the shriek of tearing metal' or 'the low buzz of a neon transformer' — directly influences the audio output, not just the visuals, because the model was trained jointly on audio, video, and images.

_Developers exploring multimodal AI video tools stay current on model capabilities through daily.dev._

---

Tags: [#multimodal](https://daily.dev/tags/multimodal), [#video-generation](https://daily.dev/tags/video-generation)

[View this post on daily.dev](https://daily.dev/posts/the-ultimate-guide-to-flux-3-replicate-blog-zxsuaoe7e)