LTX

Mode: video · Models: 8

Vendor: Lightricks LTX · Official API docs: docs.ltx.video

LTX 2.3 (by Lightricks) is a video model with synchronized native audio, first-to-last frame image control, and resolutions up to 4K. The Pro flagship handles text-to-video, image-to-video, audio-to-video, retake, and extend; the Fast variant trades fidelity for speed and longer clips.

Models

id	Name	Input type
ltx-v2.3-pro	LTX 2.3 Pro	t2v
ltx-v2.3-fast	LTX 2.3 Fast	t2v
ltx-2.3-a2v	LTX 2.3 Audio-to-Video	a2v
ltx-v2.3-extend	LTX 2.3 Extend	v2v
ltx-v2.3-retake	LTX 2.3 Retake	v2v
ltx-pro-t2v	LTX Pro	t2v
ltx-v2-fast	LTX Fast	t2v
ltx-v2-retake	LTX Retake	v2v

CLI

# text-to-video with native audio
gen-ai generate -m ltx-v2.3-pro \
  -p "aerial shot over a misty forest at dawn, slow push-in, ambient birdsong" \
  --ar 16:9 -r 1080p -d 8 --audio-gen

# image-to-video: animate a start frame
gen-ai generate -m ltx-v2.3-pro -p "the camera drifts forward as fog rolls in" -i ./still.jpg

# audio-driven generation
gen-ai generate -m ltx-2.3-a2v -p "a singer performing on a neon stage" -a ./vocals.mp3

# extend an existing clip
gen-ai generate -m ltx-v2.3-extend -p "the scene continues into night" --video ./clip.mp4

MCP

{ "name": "picsart_generate",
  "arguments": {
    "model": "ltx-v2.3-pro",
    "prompt": "aerial shot over a misty forest at dawn, slow push-in",
    "aspectRatio": "16:9",
    "resolution": "1080p",
    "duration": 8,
    "generateAudio": true
  } }

Parameters

Full parameter surface for every model, sourced from gen-ai models info <id> --json. CLI flags show the primary short form; the canonical --kebab-case long form always works too.

ltx-v2.3-pro — LTX 2.3 Pro

Try ltx-v2.3-pro in Playground ↗

Input type: t2v

Param	CLI flag	Type	Values
prompt	-p	text	required
duration	-d	enum	6 · 8 · 10 (default 6)
resolution	-r	enum	1080p · 1440p · 2160p (default 1080p)
aspectRatio	--ar	enum	16:9 · 9:16 (default 16:9)
generateAudio	--audio-gen	boolean	true · false (default true)
imageUrls	-i	file	image (up to 1)

ltx-v2.3-fast — LTX 2.3 Fast

Try ltx-v2.3-fast in Playground ↗

Input type: t2v

Param	CLI flag	Type	Values
prompt	-p	text	required
duration	-d	enum	6 · 8 · 10 · 12 · 14 · 16 · 18 · 20 (default 6)
resolution	-r	enum	1080p · 1440p · 2160p (default 1080p)
aspectRatio	--ar	enum	16:9 · 9:16 (default 16:9)
generateAudio	--audio-gen	boolean	true · false (default true)
imageUrls	-i	file	image (up to 1)

ltx-2.3-a2v — LTX 2.3 Audio-to-Video

Try ltx-2.3-a2v in Playground ↗

Input type: a2v

Param	CLI flag	Type	Values
prompt	-p	text	free text
audioUrl	-a	file	required audio
imageUrls	-i	file	image (up to 1)
cfgScale	--cfg	number	1–50, default 5

ltx-v2.3-extend — LTX 2.3 Extend

Try ltx-v2.3-extend in Playground ↗

Input type: v2v

Param	CLI flag	Type	Values
prompt	-p	text	free text
duration	-d	enum	5 · 10 · 15 · 20 (default 5)
videoUrl	--video	file	required video

ltx-v2.3-retake — LTX 2.3 Retake

Try ltx-v2.3-retake in Playground ↗

Input type: v2v

Param	CLI flag	Type	Values
prompt	-p	text	required
duration	-d	enum	5 · 10 · 15 · 20 (default 5)
videoUrl	--video	file	required video

ltx-pro-t2v — LTX Pro

Try ltx-pro-t2v in Playground ↗

Input type: t2v

Param	CLI flag	Type	Values
prompt	-p	text	required
duration	-d	enum	6 · 8 · 10 (default 6)
resolution	-r	enum	1080p · 1440p · 2160p (default 1080p)
generateAudio	--audio-gen	boolean	true · false (default true)
imageUrls	-i	file	image (up to 1)

ltx-v2-fast — LTX Fast

Try ltx-v2-fast in Playground ↗

Input type: t2v

Param	CLI flag	Type	Values
prompt	-p	text	required
duration	-d	enum	6 · 8 · 10 · 12 · 14 · 16 · 18 · 20 (default 6)
resolution	-r	enum	1080p · 1440p · 2160p (default 1080p)
generateAudio	--audio-gen	boolean	true · false (default true)
imageUrls	-i	file	image (up to 1)

ltx-v2-retake — LTX Retake

Try ltx-v2-retake in Playground ↗

Input type: v2v

Param	CLI flag	Type	Values
prompt	-p	text	required
duration	-d	enum	5 · 10 · 15 · 20 (default 5)
videoUrl	--video	file	required video

Notes: A2V / extend / retake are Pro-only and take audio/video inputs; the Fast variant adds longer durations at 1080p.

Pricing

gen-ai pricing ltx-v2.3-pro -d 8 -r 1080p

Cost scales with duration, resolution, and audio.