LTX-2 API

Name: LTX-2 API - Example AI Video
Uploaded: 2026-08-07
Description: Sample video generated with the LTX-2 API on VideoGenAPI

Interactive demo

Try LTX-2 right now

Explore the interface and see how easy it is to generate videos with LTX-2. Sign up for free to start creating!

Playground Demo - LTX-2

Demo Mode

Describe your video *

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Generation Type

Video Settings

Sign up to generate videos

Create a free account to access the full playground and generate videos with LTX-2 on a monthly plan.

timer ~30s generation

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Demo Preview

Demo Mode

LTX-2

by Lightricks

Create high-fidelity video and audio from text with LTXV 2 the new open source video model.

4K • 6-10s • ~30s processing

Gallery

LTX-2 examples

Discover what's possible with LTX-2 AI video generation

Macro shot of a butterfly landing on a flower, wings fluttering, garden bokeh, 4K detail on wing patterns

Generated with the LTX-2 API at up to 4K. Results vary with prompt detail and requested duration.

What is the LTX-2 API?

The LTX-2 API is a REST interface that lets developers generate AI videos programmatically using Lightricks's LTX-2 model. It supports text-to-video, image-to-video through a single POST endpoint. VideoGenAPI handles authentication, billing, and provider infrastructure - you only need one API key to start building with the LTX-2 API.

Lightricks

Provider

REST

API protocol

~30s

Avg. generation

How to use the LTX-2 API

Integrate the LTX-2 API in your app in under 5 minutes with these four steps.

1

Create your VideoGenAPI account

Sign up free at VideoGenAPI.com and generate your API key from the dashboard. No Lightricks account needed.
2

Send a request to the LTX-2 API

POST to https://videogenapi.com/api/v1/generate with your API key, model "ltxv-2", and a text prompt describing your video.
3

Poll for completion

Use the returned generation_id to poll GET /api/v1/status/{id} until the job completes. Video completion webhooks are not available yet.
4

Download your video

Once status is "completed", retrieve the video URL from the response and embed it in your app, website, or workflow.

Get your LTX-2 API key

Documentation

About LTX-2

info Overview

LTX Video 2 (LTXV 2) is a cutting-edge open-source model delivering high-fidelity video and audio from text prompts. It is one of the few models offering 4K output, making it ideal for large-screen and broadcast-quality content without running your own GPU cluster. Access LTXV 2 through VideoGenAPI with ~30 second average processing - exceptional value for 4K output, and a natural sibling to Wan 2.5 when you want open-weights heritage with a hosted API. Included in monthly plans from $29 alongside 14 other included-class models. For cost context versus pay-per-use platforms, see fal.ai alternative (/blog/fal-ai-alternative).

stars Key Strengths

check_circle 4K resolution output - rare among AI video models
check_circle Open-source LTX architecture
check_circle Synchronized audio generation
check_circle Fast ~30s processing despite 4K quality
check_circle Text and image input modes

check_circle Supported Features

Text to Video
Image to Video

settings Specifications

Max Resolution: 4K
Duration Range: 6-10s
Avg. Processing: ~30s

workspace_premium Why LTX-2 via VideoGenAPI?

check_circle
Unified API: Access LTX-2 alongside 15 other models with one API key - no separate Lightricks setup.
check_circle
Per-video pricing: LTX-2 videos count against your monthly plan, from $0.011/video, with no per-second billing.
check_circle
Production-ready: one REST endpoint, status polling, an MCP server for AI agents, and full docs.

Use cases

What you can build with LTX-2

1

4K marketing assets

Create large-format hero videos for displays and presentations.

2

Nature and macro content

Leverage 4K detail for close-up and wildlife visuals.

3

Open-source products

Build on LTX without managing 4K GPU clusters.

API reference

LTX-2 API documentation

Quick start guide to integrate LTX-2 in your application

code Endpoint

POST https://videogenapi.com/api/v1/generate

tune LTX-2 API parameters

Request parameters accepted by the LTX-2 API on POST /api/v1/generate
Parameter	Type	Required	LTX-2 values
model	string	Yes	`"ltxv-2"`
prompt	string	Yes	Scene description, up to 1,000 characters.
image_url	string	No	Public jpg, png, gif or webp URL. Animates the image (image-to-video).
duration	integer	No	6 to 10 seconds. Plan caps: 5s Basic, 10s Starter, 15s Unlimited.
resolution	string	No	1080p, 1440p, 2160p. Plan caps: 480p Basic, 720p Starter, 1080p Unlimited.
aspect_ratio	string	No	16:9, 4:3, 1:1 or 9:16 (text-to-video).
seed	integer	No	Fixed value for reproducible output, -1 for random.
add_audio	boolean	No	LTX-2 generates native audio with the video.

Average generation time: ~30s. Poll GET /api/v1/status/{id} with the returned generation_id. Full reference: /docs/generate.

send Request Example

{
  "model": "ltxv-2",
  "prompt": "Macro shot of a butterfly landing on a flower, wings fluttering, garden bokeh, 4K detail on wing patterns",
  "duration": 10,
  "resolution": "1080p"
}

download Response Example

{
  "success": true,
  "generation_id": "gen_abc123xyz",
  "status": "in_progress",
  "estimated_time": 30}

integration_instructions Code Examples

const response = await fetch('https://videogenapi.com/api/v1/generate', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY'
  },
  body: JSON.stringify({
    model: 'ltxv-2',
    prompt: 'Macro shot of a butterfly landing on a flower, wings fluttering, garden bokeh, 4K detail on wing patterns',
    duration: 10  })
});

const data = await response.json();
console.log(data.generation_id);

import requests

response = requests.post(
    'https://videogenapi.com/api/v1/generate',
    headers={
        'Content-Type': 'application/json',
        'Authorization': 'Bearer YOUR_API_KEY'
    },
    json={
        'model': 'ltxv-2',
        'prompt': 'Macro shot of a butterfly landing on a flower, wings fluttering, garden bokeh, 4K detail on wing patterns',
        'duration': 10    }
)

data = response.json()
print(data['generation_id'])

$ch = curl_init('https://videogenapi.com/api/v1/generate');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Content-Type: application/json',
    'Authorization: Bearer YOUR_API_KEY'
]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    'model' => 'ltxv-2',
    'prompt' => 'Macro shot of a butterfly landing on a flower, wings fluttering, garden bokeh, 4K detail on wing patterns',
    'duration' => 10]));

$response = curl_exec($ch);
$data = json_decode($response, true);
echo $data['generation_id'];

curl -X POST https://videogenapi.com/api/v1/generate \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "ltxv-2",
    "prompt": "Macro shot of a butterfly landing on a flower, wings fluttering, garden bokeh, 4K detail on wing patterns",
    "duration": 10  }'

LTX-2 image-to-video request

curl -X POST https://videogenapi.com/api/v1/generate \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "ltxv-2",
    "prompt": "Slow push in, soft natural light, subtle movement",
    "image_url": "https://example.com/your-image.jpg",
    "duration": 5
  }'

View Full Documentation arrow_forward

Pricing

LTX-2 API pricing

LTX-2 is billed per video, not per second of output. See the cost calculator for your volume.

$0.011

per LTX-2 video on the Starter plan

LTX-2 API cost per video by VideoGenAPI plan
Plan	Monthly	Videos	Cost / video	Max output
Basic	$29	1,500	$0.019	480p, 5s
Starter	$49	4,500	$0.011	720p, 10s
Unlimited	$199	No cap	Flat	1080p, 15s

check_circle One API key for LTX-2 and 15 other models
check_circle No Lightricks account required
check_circle Billed per video, never per second of output

Start with the LTX-2 API

Comparison

LTX-2 API vs alternatives

How the LTX-2 API compares on resolution, clip length, generation speed and price. All models below share one API key.

Comparison of the LTX-2 API against alternative AI video generation models on VideoGenAPI
Model	Provider	Max resolution	Clip length	Avg. speed	Price / video
LTX-2 API This page	Lightricks	4K	6-10s	~30s	Included, from $0.011
LTX-Video 13B API	Lightricks	480p	1-60s	~70s	Included, from $0.011
Wan 2.5 API	Alibaba	1080p	5-10s	~50s	Included, from $0.011
Higgsfield API	Higgsfield AI	1080p	5-15s	~45s	Included, from $0.011

Switching between these models means changing the ltxv-2 value in your request body. The endpoint, authentication and status polling stay the same.

Limits

LTX-2 API limitations

Plan duration and resolution caps apply even when the model supports higher output. See pricing.
Jobs are asynchronous: poll GET /api/v1/status/{id}. Video completion webhooks are not available yet.
Rate limits and fair-use throttling are documented on /docs/rate-limits.
Prompts and images that violate the content guidelines are rejected.

Text-to-video API hub Image-to-video API hub Catalogue benchmark Generate endpoint docs

Reviewed by Enzo Lanne · Founder, VideoGenAPI · Updated 7 August 2026

FAQ

LTX-2 API questions

Does LTX Video 2 really output 4K? expand_more

Yes. LTX Video 2 supports up to 4K (2160p) resolution - one of the few AI video models offering broadcast-quality output via API. Final resolution also depends on your VideoGenAPI plan caps.

Is LTX Video 2 open source? expand_more

LTX Video 2 is based on the open-source LTX architecture from Lightricks. VideoGenAPI hosts it so you can use it via REST without running your own GPU infrastructure.

Does LTX Video 2 generate audio? expand_more

Yes. LTXV 2 includes synchronized audio generation alongside high-fidelity video output.

How fast is LTX Video 2 compared to Veo or Kling? expand_more

LTX Video 2 averages ~30 seconds processing - significantly faster than Veo 2 (~110s) or Kling 3 (~250s), while still delivering up to 4K quality.

How does LTX Video 2 compare to LTX-Video 13B? expand_more

LTX Video 2 maximises fidelity (up to 4K with audio) over 6-10 second clips. LTX-Video 13B maximises duration (up to 60 seconds) at 480p. Pick 2 for hero assets; pick 13B for long drafts and timelapses.

Is LTX Video 2 included in monthly plans? expand_more

Yes. LTX Video 2 is an included-class model on Basic ($29), Starter ($49) and Unlimited ($199) plans. Details on /ai-video-api-pricing/ (/ai-video-api-pricing/).

How much does one LTX-2 API video cost? expand_more

Each LTX-2 generation counts as one video in your VideoGenAPI plan, whatever its length within plan limits. On Starter ($49/month for 4,500 videos, up to 720p and 10s) that is about $0.011 per video. Unlimited ($199/month) removes the monthly cap and raises output to 1080p. Per-second video APIs bill every second of output instead, so a 10-second clip costs ten times a 1-second one.

Related models

Compare with other AI video models

Explore alternative models for different quality, speed, and budget needs.

LTX-Video 13B API

Lightricks

LTX-Video 13B is the long-form open-source video model from Lightricks. Unlike most models capped at 10 seconds, it generates clips from 1 to 60 seconds from a single text prompt, making it a fit for explainers, extended B-roll and timelapse sequences.

LTX-Video 13B API docs arrow_forward

Wan 2.5 API

Alibaba

Wan 2.5 Video is an open-source AI model capable of automatically generating realistic videos with audio.

Wan 2.5 API docs arrow_forward

Higgsfield API

Higgsfield AI

Advanced AI model with excellent motion understanding and photorealistic output. Perfect for cinematic scenes.

Higgsfield API docs arrow_forward