FLUX 3 AI Video Generator
Make a video from a text prompt or photo with Flux 3. OnVid uses Flux 3, a multimodal AI model from Black Forest Labs that can work across video, images, audio, and action in one workflow.
Kling 3 4K · cinematic
Veo 3.1 native audio
Seedance 2 #1 arena
Wan 2.7 image-to-video
Hailuo 2.3 expressive
Hunyuan open sourceKling 3 4K · cinematicVeo 3.1 native audioSeedance 2 #1 arenaWan 2.7 image-to-videoHailuo 2.3 expressiveHunyuan open sourceWhat is Flux 3?
Flux 3 is a multimodal AI model from Black Forest Labs that can generate and understand video, images, audio, and action in one system. Its defining strength is that it treats those media types as connected parts of the same scene, which helps it reason about motion and context. If you want to try it without juggling separate tools, you can use Flux 3 on OnVid and turn a prompt or photo into a downloadable video.
FLUX 3 specs, pricing, and best uses
by Black Forest Labs
Black Forest Labs' unified image + video + audio model, with clips up to ~20 seconds.
- Resolution
- 1080p+
- Max length
- ~20s
- Audio
- Native (synced)
- Inputs
- Text · Image
- Best for
- Unified multimodal
- Cost
- 12 credits/clip · free to start on OnVid
Inside Flux 3
The sections below cover the core capabilities people check before choosing a model, including how Flux 3 handles multimodal understanding, AI video creation, image work, and action prediction in one system.
Flux 3 native audio
Flux 3 native audio means Flux 3 can treat sound as part of the same multimodal system instead of leaving audio as a separate afterthought. That matters because motion, timing, and sound cues can stay aligned inside one AI video workflow. For creators, Flux 3 native audio is most useful when a scene needs action and sound to feel connected, such as footsteps, impacts, ambience, or spoken moments.
Flux 3 image to video motion understanding
Flux 3 image to video workflows are built around the model's broader understanding of images, motion, and actions. A single still image can become an AI video with camera movement and scene motion that follows the source content more closely. This matters most when you want to animate a portrait, product shot, or landscape without rebuilding the scene from scratch.
Flux 3 keyframe control
Flux 3 keyframe control gives you a more directed way to shape movement across an AI video. Instead of relying only on one prompt, Flux 3 can use structured visual guidance so important poses, camera beats, or transitions land closer to your intent. That makes Flux 3 more useful for sequences where consistency matters more than surprise.
Flux 3 video length flexibility
Flux 3 video length flexibility matters because many AI video models are strongest only in very short bursts. Flux 3 is positioned for broader multimodal sequence work, which makes it a better fit when you need more than a quick visual test. On practical projects, Flux 3 AI is most helpful when you want to build scenes that hold together across a longer span of motion and timing.
Free Black Forest Labs Flux 3 access
Free Black Forest Labs Flux 3 access is usually the first thing people look for when they want to test the model before moving into a paid workflow. What matters is access to the real Black Forest Labs model, then an easy way to compare its output with other AI video options in one place. In hands-on use, Flux 3 stands out when you want to test multimodal strengths like motion, image understanding, and audio-aware scene building without juggling separate model accounts.
Who uses Flux 3 and what they make
Everyday creators, marketers, and hobbyists use Flux 3 to turn a prompt or photo into an AI video they can post, share, or build into a bigger project.
People making shareable AI videos from a simple idea
Flux 3 fits people who want an AI video from a quick prompt, then want to download it and send it to friends. OnVid gives these casual creators one place to test ideas fast without learning editing software.
Flux 3 and more top AI video models in one studio
Pick the right model for each AI video idea inside OnVid, with no extra accounts and no juggling tools.
Cinematic 4K text-to-video with native audio and multi-shot consistency.
| Model | Resolution | Max length | Best for | Speed |
|---|---|---|---|---|
| Kling 3.0 | Up to 4K | ~10s per clip | Cinematic, multi-shot | Max quality |
| Veo 3.1 | 1080p (up to 4K) | ~8s per clip | Native audio | Balanced |
| Seedance 2.0 | Up to 4K | ~12s | Sharp motion | Fast |
| MiniMax H3 | Native 2K | 5–15s (to ~30s) | 2K + references | Balanced |
| Hailuo 2.3 | 1080p | 6–10s | Expressive motion | Fast |
| FLUX 3 | 1080p+ | ~20s | Unified multimodal | Max quality |
| Seedance 2.5 | Native 4K | Up to 30s | Long 4K clips | Fast |
 Grok Imagine | Up to 720p | 6–15s | Fast clips with sound | Balanced |
How to generate with Flux 3
You go from idea or photo to a finished AI video in three steps using OnVid with Flux 3 selected as your model.
Open Flux 3 and add your prompt or image
Choose Flux 3 in OnVid, then type the scene you want or upload one image to guide the result. Start with a clear subject, action, and setting so the AI video comes out closer to what you pictured.
Kling 35s10s16:9Set the style and length for your AI video
Pick the look you want, such as cinematic, anime, or realistic, and choose how long you want the output to be before you generate. This is also the moment to review your prompt and make one quick edit if the motion or mood needs to be more specific.
Generate and download your AI video
Run the model and wait for OnVid to turn your input into a finished AI video you can preview right away. When it looks right, download the file in HD or share the link directly from the result screen.
See what people make with Flux 3
Real examples help set expectations, and Flux 3 stands out when people want an AI video from a clear prompt or starting image.
“I typed a simple idea and got an AI video I could actually send to friends the same day. It looked polished without me having to learn any editing.”
“I used one photo from my camera roll and turned it into a moving scene in a few clicks. The AI video felt fun and personal, and I downloaded it right away.”
“Most video apps lose me fast, but this one gave me a finished AI video from a short prompt without any guesswork. I made a longer video than I expected and shared it with my group chat.”
Your guide to Flux 3 on OnVid
See how Flux 3 handles prompts, styles, and everyday AI video tasks so you can quickly decide if it fits your idea.
Flux 3 image to video starts with one strong frame
Flux 3 image to video works best when the source photo has one clear subject, readable lighting, and a simple camera idea. Give Flux 3 a still image, then add a short prompt that says what should move, what should stay stable, and how the camera should travel. That usually produces a cleaner AI video than asking for many actions at once. In practice, Flux 3 AI is strongest when you treat the photo as a starting shot, then ask for subtle motion, depth, and one scene change instead of a full sequence.
Flux 3 native audio makes scenes feel more complete
Flux 3 native audio is a big reason people look at the model, because it aims to handle picture and sound as one multimodal system. That matters when timing affects the result, such as footsteps, room tone, simple speech beats, or action that should land with matching sound. Flux 3 performs best when the prompt names the sound source clearly instead of leaving audio implied. Ask for a rainy street with distant traffic, or a quiet room with one voice, and the video has a better chance of feeling coherent on the first pass.
How to use Flux 3 for cleaner prompts and faster retries
How to use Flux 3 well comes down to prompt structure, not prompt length. Start with subject, then setting, then movement, then camera, then style, and keep each part concrete. OnVid lets you test that workflow without juggling separate model accounts, so you can switch inputs and compare outputs in one place. It is a practical way to run Flux 3 with either text or a photo, then refine the result by changing one detail at a time instead of rewriting the whole prompt.
Flux 3 video length works best when the scene has one main action
Flux 3 video length should guide your scene design before you generate. Shorter ideas usually come out stronger when the action is focused, such as a portrait turning to camera, a car passing through rain, or a product shot with one slow orbit. Longer AI video plans need a clear beginning, middle, and end so motion does not drift between beats. If you want a shareable teaser after export, the MP4 to GIF tool is useful for turning one finished section into a loop without rebuilding the whole scene.
Flux 3 keyframe control matters most when you need more guided motion
Flux 3 keyframe control is worth checking when your scene needs movement to land closer to a planned beat. The bigger reason to choose Flux 3 is still its unified multimodal design, with image, video, audio, and action understanding working in one workflow. If you are comparing model pages on OnVid, keep the same prompt across tests and judge which AI video handles your exact scene more naturally. That gives you a clearer answer than changing both the model and the prompt at the same time.
One prompt, real Flux 3 results on OnVid
These are real AI videos made with OnVid from a single prompt. Hover any card to play and see how Flux 3 handles motion, detail, and style in the finished result.
Kling 3Flux 3 questions, answered
These answers cover the facts people look for before trying Flux 3, including access, capabilities, limits, and how it fits inside an [AI video generator](/) workflow.
What does Flux 3 do?
Who makes Flux 3?
How does Flux 3 work inside?
Is Flux 3 free to use?
What is the easiest way to try Flux 3?
What quality can Flux 3 produce?
What is Flux 3 video length?
Does Flux 3 native audio exist?
Can Flux 3 image to video turn one photo into motion?
How to use Flux 3 on OnVid?
Does Flux 3 support text, image, and video inputs?
How does Flux 3 compare with similar models?
What is Flux 3 best for?
What are the main limits of Flux 3?
How fast is Flux 3?
Can you download Flux 3 output and use it commercially?
What should you do if Flux 3 results look weak or off-prompt?
When was Flux 3 released, and where can you find current discussion about it?
Ready to make your AI video? try this model on OnVid
Generate with Flux 3 on OnVid, switch models in one place, and start free from text prompts or photos.