replicate / video
ltx-2.3-fast
Lightning-fast video generation with portrait support, camera controls, and synchronized audio. Up to 20 seconds at 1080p, 4K at 50 FPS.
lightricks/ltx-2.3-fast
Source checked: 2026-09-13 · Provider endpoint, not an independently benchmarked model.
Pricing, with its conditions.
These are source observations, not interchangeable quotes. Token, compute-time, output-duration and per-request prices cannot be compared by the number alone. Input charges and optional features may add to the total.
| Source rate | Billing unit | Conditions | Evidence |
|---|---|---|---|
| $0.06 USD | second of output video | target resolution: 1080p · or around 16 seconds for $1 | Public structured source |
| $0.12 USD | second of output video | target resolution: 2k · or around 83 seconds for $10 | Public structured source |
| $0.24 USD | second of output video | target resolution: 4k · or around 41 seconds for $10 | Public structured source |
Supported settings from the source
| fps | Frame rate in frames per second · Options: 24, 25, 48, 50 · Default: 25 |
|---|---|
| duration | Duration of the video in seconds. Durations longer than 10 seconds are only available with 1080p resolution at 24 or 25 FPS. · Options: 6, 8, 10, 12, 14, 16, 18, 20 · Default: 6 |
| resolution | Resolution quality of the generated video. Only 1080p is supported for audio_to_video, retake, and extend tasks. · Options: 1080p, 2k, 4k · Default: 1080p |
| aspect_ratio | Aspect ratio of the generated video · Options: 16:9, 9:16 · Default: 16:9 |
| generate_audio | Generate audio for the video. Used for text_to_video and image_to_video tasks. · Default: true |
| last_frame_image | Last frame image for image-to-video generation. When provided, the video interpolates between the first frame and this last frame. |
Unlisted settings, region availability, deposits, taxes and commercial terms remain unverified. Confirm the exact endpoint before purchase.