LTX 2.5 Fast: rapid AI video up to 4K and 20 seconds
LTX 2.5 Fast is the speed-optimized tier of LTX-2.5, built to turn prompts into finished clips quickly without capping your output. Generate video up to 4K (2160p) and as long as 20 seconds, with synchronized native audio and camera motion control baked in. It is the model to reach for when you need to draft, iterate, and ship at volume — right inside Picsart's AI Playground.
- Draft clips with synchronized sound
- Guide camera motion
What is LTX 2.5 Fast?
LTX 2.5 Fast is a speed-optimized text-to-video model in the ltx 2.5 family, tuned to return usable footage quickly while still reaching a high output ceiling. From a single prompt it produces clips up to 20 seconds at resolutions from 720p all the way to 4K, in 16:9 or 9:16, with synchronized native audio generated alongside the picture. Where the higher-precision LTX 2.5 Pro prioritizes fidelity per shot, Fast is engineered for throughput — making it ideal for concepting, variations, and producing a lot of video in less time.
Scale up: 4K resolution and 20-second clips
Fast is built around headroom. Render at 720p, 1080p, 1440p, or 2160p (up to 4K), choose 16:9 or 9:16, and stretch a single generation to 20 seconds — long enough for a full scene rather than a fragment. Pick a frame rate of 24, 25, 48, or 50 fps for smooth or high-motion looks, and write prompts up to 5,000 characters for detailed direction. Native audio is generated by default, so sound and picture arrive together, and camera motion control lets you call moves like dolly, jib, or focus shift. You can also anchor a generation with an optional start or end frame image to guide how a shot opens and closes.
How LTX 2.5 Fast works inside Picsart
Picsart runs LTX 2.5 Fast directly in the AI Playground, so you can type a prompt, set resolution, duration, aspect ratio, frame rate, and camera motion, then generate video with native audio — no setup and no direct access to the model required. And you can reach LTX 2.5 Fast whichever way you work: on the web, in the desktop app, or built straight into your own projects via CLI, MCP, REST API, and SDK, with no third-party API keys or separate subscriptions.
Why creators pick LTX 2.5 Fast for volume
Speed usually means compromise — Fast flips that. It pairs quick turnaround with the highest ceiling in the line: up to 4K and 20-second clips, plus synced native audio and camera motion in every generation. That makes it the practical choice for iterating on ideas, batching social variations, and building long-form scenes without the wait. When a hero shot needs maximum fidelity, switch to LTX 2.5 Pro, and explore the wider LTX family for editing tasks like LTX 2.3 Reframe and LTX 2.3 Outpaint.
What you can create with LTX 2.5 Fast
Rapid social drafts
Spin up vertical 9:16 clips in quick succession to test hooks, captions, and edits — iterate on a concept in minutes instead of hours.
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LTX 2.5 Fast FAQ
Yes. LTX 2.5 Fast supports 720p, 1080p, 1440p, and 2160p, so you can render all the way up to 4K resolution in either 16:9 or 9:16.
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