Infinite streaming video generation: continuous video that keeps going
Build continuous AI video streams with hosted realtime models. Compare prompt control, generation windows and session limits for channels and displays.
Infinite streaming video generation means a model that keeps producing video for as long as the session is open, steered by prompts instead of restarted per clip. Windflow hosts four such models, from $0.0017 to $0.0069 per ready second: Helios, LongLive-2.0, LTX-2.5 and MiniMax FastH3.
They suit streams, always-on channels, ambient screens and interactive stories, where the question is "what happens next" rather than "render this clip".
Two ways a model keeps going
Continuous generation produces short chunks in a rolling loop. Each chunk continues the last, and a new prompt can change direction between chunks. Helios and LongLive-2.0 work this way.
Windowed generation produces a longer window of video, often with audio, then the next window. Prompts take effect at the window boundary. LTX-2.5 and MiniMax FastH3 work this way, and the first frame arrives after a whole window.
The difference shows up in how fast a prompt change reaches the screen. Continuous models respond within a chunk or two; windowed models wait for the window in flight to finish.
The four models
| Model | Style | Steered by | Audio | Price per second |
|---|---|---|---|---|
| Helios | Continuous, one steerable clip | Text prompt; optional reference image | No | $0.0017 |
| LongLive-2.0 | Continuous, multi-shot | Text shot prompts | No | $0.0021 |
| LTX-2.5 | Windowed | Text prompt; optional reference still | Generated with the picture | $0.0040 |
| MiniMax FastH3 | Windowed | Text prompt with visual, dialogue, soundscape and music direction | Generated with the picture | $0.0069 |
Which to choose
- A continuous stream you steer live with text: Helios. A prompt change is a soft transition by default, so subjects, layout and camera motion stay continuous, and a scene cut is there when you want something new.
- A directed sequence of shots: LongLive-2.0. You write one prompt per shot, switch softly while it runs, or cut to a new scene.
- Sound that belongs to the scene: LTX-2.5 or MiniMax FastH3, which generate audio with the video. FastH3 is subject to the MiniMax H3 Community License; LTX-2.5 is covered by the LTX-2 Community License. Read the licence before building a product on either.
Patterns that work
- A prompt queue. Schedule prompts ahead of time so the stream keeps changing without anyone typing. Audience votes or an agent can feed the queue.
- Scene length as a design choice. Scenes have a budget on some models; plan a cut or a soft change before the stream runs out.
- Anchoring a character. A reference still can help hold a recurring host or setting steady from one window to the next on models that accept one.
- A fallback bed. Generated audio follows the scene but not always; keep a sound bed ready for content that needs continuous audio.
Costs to plan for
A stream is billed for every ready second it is open. A one-hour Helios stream is $6.12; a one-hour LTX-2.5 stream is $14.40; a one-hour FastH3 stream is $25.00. One stream watched by many people is one meter, so audience size does not raise the bill. How per-second pricing works has the full table.
Because capacity is brought up on demand rather than standing, schedule long streams ahead and ask for a live demo window; request access to do so.
FAQ
Is there an infinite streaming video generation API?
Yes. Windflow hosts Helios, LongLive-2.0, LTX-2.5 and MiniMax FastH3, which generate video continuously or window by window for as long as a session is open, steered by prompts, and bills per ready second.
What is the difference between continuous and windowed generation?
Continuous models produce short chunks in a loop and respond to a new prompt within a chunk or two. Windowed models produce a longer window, often with audio, and apply prompts at the window boundary.
Which models generate audio?
LTX-2.5 and MiniMax FastH3 generate audio together with the video. The other eight models in the catalog are video-only.
Does the stream ever have to restart?
Not by design. Some models limit how long one scene can run, and you issue a new shot or scene cut to continue. Long runs can drift, so a periodic scene cut or re-conditioning keeps quality steady.