ComfyUI is the de facto interface for LTX 2.3. Every serious LTX 2.3 workflow you'll find — image-to-video, text-to-video, lipsync, keyframe interpolation, audio-only — is published as a ComfyUI JSON. This guide covers the workflow ecosystem: where to find the best ones, how to install custom nodes, how to swap LoRAs in and out, and which workflows actually work for NSFW use.

Skip the workflow hunting: our VirtuaVixen Studio ships every workflow we use in production, runnable in your browser with daily free tokens. The ComfyUI Workflow Pack is the same workflow library as ComfyUI JSONs you can drop straight into your install. Active updates pushed weekly via Discord.

Custom Nodes You Need

LTX 2.3 workflows depend on several custom node packs. Install these first or workflows will fail to load with “missing node” errors:

• ComfyUI-LTX2-Nodes (Lightricks) — the official LTX 2.3 node pack. LTXVAddGuide, LTXVConditioning, LTXVConcatAVLatent, etc.
• ComfyUI-KJNodes (Kijai) — utility nodes for image resize, model loading, VRAM management.
• ComfyUI-Custom-Scripts (pythongosssss) — adds MathExpression, Text Multiline, file utilities.
• ComfyUI-Impact-Pack (ltdrdata) — ImpactSwitch and other utility nodes.
• ComfyUI-Frame-Interpolation (Fannovel16) — RIFE for upscaling fps post-decode.
• ComfyUI-Manager — install and manage everything else.

Full install commands in How to Install LTX 2.3 Locally.

Where to Find LTX 2.3 Workflows

• Lightricks GitHub — official basic workflows (I2V, T2V). Good starting templates, no NSFW LoRA stack.
• Civitai — community workflows. Quality varies wildly; look for high-rated ones with explicit version notes.
• Reddit r/StableDiffusion — search “LTX 2.3 workflow” and filter by week. Frequent posts with attached JSONs.
• Kijai's repo — high-quality reference workflows from a major contributor in the space.
• Our Workflow Pack — production NSFW workflows with audio + lipsync, pre-tuned for the abliterated text encoder.

Image-to-Video Basics

The minimal LTX 2.3 I2V workflow has these nodes:

• UNETLoader — loads the diffusion model
• DualCLIPLoader — Gemma 3 + ltx text projection
• VAELoaderKJ × 2 — video VAE + audio VAE
• LoadImage + ImageResize+ + LTXVPreprocess — input image pipeline
• EmptyLTXVLatentVideo + LTXVEmptyLatentAudio — empty latents
• LTXVAddGuide — pin the input image as a guide frame
• LTXVConcatAVLatent + SamplerCustomAdvanced + LTXVSeparateAVLatent — sampling
• VAEDecodeTiled + LTXVAudioVAEDecode + CreateVideo + SaveVideo — output