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LTX API

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Production video
from a single API call

Turn text, images, or audio into 4K video with synchronized sound

#1 open weights video model

33M+ downloads

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Quickstart

Your first video in under a minute

Authenticate with a bearer token and POST a prompt — the API returns an MP4. Use the sync endpoint for quick clips, or the async job API for production workloads.

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Why build on LTX

Built to integrate, ready for production

Fast and Pro tiers

Trade speed for fidelity on the same API — a Fast tier for iteration, a Pro tier for final renders.

Built for production

Sync and async APIs with documented rate limits, so heavier jobs run without long-lived connections.

Developer experience

One REST API, clear documentation, and a public API changelog to track every change.

Reliability

A public status page with live availability and incident history.

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Product and Platform

Build with our multimodal general intelligence

Beta

HDR Output

Delivered as an IC-LoRA on LTX-2.3. Generate directly in HDR or convert existing SDR footage to EXR. More grading latitude, more range, ready for real finishing pipelines.

Retake

Regenerate just one section — replace video, audio, or both — without re-rendering the whole clip.

Reframe

Repurpose a video to any aspect ratio for social, filling new areas with generated content.

Audio to Video

Generate video where voice, music, and sound effects define structure, pacing, and motion.Built for production-grade workflows that require precise, harmonious control over audio-led scenes - from podcasts and avatars to voice-driven clips -not one-off demos or talking heads.

Two tiers, one API.
Start on Fast, ship on Pro.

Fast

Low-cost, high-speed generation for rapid iteration, storyboards, and previews.

Technical characteristics:

  • Resolutions: 1080p, 1440p, 4K
  • FPS: 24 / 25 / 48 / 50
  • Duration: up to 20s at 1080p, up to 10s at 1440p/4K

Pro

Higher detail and motion stability for final, commercial-grade renders.

Technical characteristics:

  • Resolutions: 1080p, 1440p, 4K
  • FPS: 24 / 25 / 48 / 50
  • Duration: up to 10s · required for audio-to-video, retake, extend
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Customer Voices

"The industry has long needed a bridge between generative AI and professional finishing standards. By moving past 8-bit SDR, we’ve eliminated the technical gap that kept AI assets from being used on high-fidelity displays and within complex spatial experiences. We’re no longer compromising on bit depth; we’re finally getting the dynamic range required for cinematic immersion in XR and virtual production. In the past, AI-generated content was a black box; you couldn't relight it or grade it without the image falling apart. Now, these assets behave like the real world, carrying the dynamic range needed to sit alongside traditionally captured elements. This gives our teams a professional-grade toolkit to integrate generative AI into their creative process."

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FAQs

What is the LTX-2.3 API?

The LTX-2.3 API is a high-performance text-to-video generation interface powered by the LTX-2.3 model. It enables developers to generate HD and 4K video, set custom frame rates and durations, and integrate advanced AI video capabilities into production systems.

Does the LTX-2.3 API have a Playground for testing?

Yes. The LTX API Playground allows you to test prompts, explore resolution and FPS settings, and preview outputs before integrating the API into your stack.

What resolutions and FPS values does the LTX-2.3 API support?

Supported formats include:

  • 1080p, 1440p, and 4K
  • 25 or 50 FPS
  • 6–20 second durations (depending on model: ltx-2.3-fast or ltx-2.3-pro)

This gives developers the flexibility to balance speed, fidelity, and output requirements.

Does the LTX-2.3 API support image-to-video generation?

Yes. The LTX API includes image-to-video functionality, allowing developers to animate static images or evolve concepts into dynamic sequences using LTX-2.3.

Where can I find LTX-2.3 API documentation?

You can access full documentation in the LTX Studio API Docs, which includes authentication details, request examples, model parameters, supported formats, and best practices for integrating the LTX-2.3 API into production workflows.

How much does the LTX-2.3 API cost?

LTX-2.3 API pricing varies based on usage volume, resolution, and performance tier. Current plans are available on the LTX pricing page, with custom options for enterprise or high-throughput deployments.