ltx-2.5/audio-to-video/fast
LTX 2.5 Fast audio-to-video for track-timed 1080p clips
MiniMax H3 Fast bills every resolution below at the same rate. Generation is faster than standard MiniMax H3, and detailed prompt instructions are followed less strictly.
| Parameter | Required | Type | Default | Range / Options | Description |
|---|---|---|---|---|---|
| image* | Yes (*) | Image | None | JPEG, PNG, WebP, and similar; URL up to 30 MB | This frame opens the shot. |
| prompt* | Yes (*) | String | Example prompt | 1 or more characters | Say what changes after the opening frame, including camera and sound. |
| aspect_ratio | No | String | 16:9 | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 | Output frame shape. |
| resolution | No | String | 768p | 480p, 768p, 1080p, 2k | All four sizes bill at the same per-second rate. |
| duration | No | Integer | 5 | 5-15 seconds | Use a short duration while you are still changing the prompt. |
MiniMax H3 Fast is $0.02 per second of generated video at 480p, 768p, 1080p, and 2K. Reference images and a reference video do not add a separate charge on the reference page.
| Duration | Price |
|---|---|
| 5 seconds | $0.10 |
| 10 seconds | $0.20 |
| 15 seconds | $0.30 |
A batch multiplies that total by the number of outputs.
LTX 2.5 Fast audio-to-video for track-timed 1080p clips
Animate a controlled transition between chosen first and last frames.
Animate stills into native 4K cinematic clips with start-end frame guidance and synchronized sound.
Generate video from multi-keyframe stills with optional audio
Wan 3.0 Text To Video makes cinematic clips from prompts with audio
Generate directed multi-clip videos from prompts with optional audio.
MiniMax H3 Fast animates a single starting image into a 5-15 second video with native audio. It is a fit for product stills, portraits, and storyboard frames when you want a fast pass.
MiniMax H3 Fast is faster than standard MiniMax H3 and follows detailed instructions less strictly. Ask for one motion and one camera move. Exact wardrobe changes, written text, and complex choreography are more likely to drift.
MiniMax H3 Fast needs one opening image, as a JPEG, PNG, WebP, or similar file. A URL image may be up to 30 MB. Duration is 5-15 seconds, and resolution is 480p, 768p, 1080p, or 2K.
No. MiniMax H3 Fast uses the aspect ratio you select for the output frame. Pick the ratio that matches the destination, and keep the important subject inside that shape.
Yes. MiniMax H3 Fast includes audio with the video. Describe the sound in the prompt if it matters, and expect looser adherence than on the standard MiniMax H3 page.
Choose MiniMax H3 Fast when speed and the $0.02 per second rate matter more than strict instruction following. Choose standard MiniMax H3 when the first frame, identity, or shot directions must stay tight.
MiniMax H3 Fast costs $0.02 per second of generated video at 480p, 768p, 1080p, and 2K. A 5-second clip is $0.10, a 10-second clip is $0.20, and a 15-second clip is $0.30. Reference images and a reference video do not add a separate charge. Generations spend USD credits, and new accounts usually receive a trial balance.
Yes. Build the shot in the Playground Web UI, then send the same MiniMax H3 Fast model and parameters over the RunComfy HTTP API. The page does not promise a fixed queue time or unlimited concurrency.
RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.
