# 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.

Source: https://windflow.online/use-cases/infinite-streaming-video-generation · Updated 2026-10-11 · Windflow Labs

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](https://windflow.online/models/helios) | Continuous, one steerable clip | Text prompt; optional reference image | No | $0.0017 |
| [LongLive-2.0](https://windflow.online/models/longlive-2) | Continuous, multi-shot | Text shot prompts | No | $0.0021 |
| [LTX-2.5](https://windflow.online/models/ltx-2-5) | Windowed | Text prompt; optional reference still | Generated with the picture | $0.0040 |
| [MiniMax FastH3](https://windflow.online/models/fast-h3) | 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](https://windflow.online/guides/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](https://windflow.online/auth) 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.