A curated list of models, text encoders, and tools for the LTX-2 video generation suite.
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ComfyUI official blogpost
LTX2.3-Multifunctional is a desktop-optimized version of LTX that lowers GPU requirements and simplifies usage. It integrates all features including image-to-video, text-to-video, start/end frames, lip-sync, video enhancement, and image generation into a single application.
Key Features:
- Lower GPU Requirements: Only needs 24GB VRAM (vs 32GB for standard desktop version)
- All-in-One Interface: No complex ComfyUI workflows or error-prone nodes
- Features: T2V, I2V, start/end frames, lip-sync, video enhancement, image generation, LoRA support
- Multi-Frame Insertion: Two modes for generating long videos
- Easy Setup: No third-party software required, just install LTX desktop
Downloads & Resources:
LTX-2 models are available in various formats including full weights, transformers-only, and GGUF quantizations for efficient inference.
- Lightricks/LTX-2 - Official repository.
- Lightricks/LTX-2.3 - Official repository (latest version).
- Drbaph - Quantization
Quantized to fp8_e5m2 to support older Triton with older Pytorch on 30 series GPUs. For WangGP in Pinokio
| Ver | Name | Precision | Size | Download |
|---|---|---|---|---|
| 2 | ltx-2-19b dev |
27.1 GB |
| Ver | Rank | Precision | Size | Download |
|---|---|---|---|---|
| 2.3 | 384 |
7.61 GB | ||
| 2.3 | 208 |
4.97 GB | ||
| 2.3 | 159 |
3.83 GB | ||
| 2.3 | 111 |
2.74 GB | ||
| 2.3 | 105 |
2.59 GB | ||
| 2 | 384 |
7.67 GB | ||
| 2 | 242 |
4.88 GB | ||
| 2 | 175 |
3.58 GB | ||
| 2 | 175 |
1.79 GB |
Required for current two-stage pipeline implementations in this repository. Download to COMFYUI_ROOT_FOLDER/models/latent_upscale_models folder.
| Ver | Name | Size | Download |
|---|---|---|---|
| 2.3 | spatial-upscaler x2 1.0 |
996 MB | |
| 2.3 | spatial-upscaler x1.5 1.0 |
1.09 GB | |
| 2 | spatial-upscaler x2 1.0 |
1.05 GB |
Required for current two-stage pipeline implementations in this repository. Download to COMFYUI_ROOT_FOLDER/models/latent_upscale_models folder.
| Ver | Name | Size | Download |
|---|---|---|---|
| 2.3 | temporal-upscaler x2 1.0 |
262 MB | |
| 2 | temporal-upscaler x2 1.0 |
262 MB |
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These models are optimized for lower memory usage. Note that in ComfyUI, these are typically loaded as transformer-only models.
QuantStack
| Model | Quant | Size | Download |
|---|---|---|---|
| ltx-2.3-22b | 12.4 GB | dev ┊ distilled ┊ distilled-1.1 | |
| ltx-2.3-22b | 14.7 GB | dev ┊ distilled ┊ distilled-1.1 | |
| ltx-2.3-22b | 14 GB | dev ┊ distilled ┊ distilled-1.1 | |
| ltx-2.3-22b | 17.8 GB | dev ┊ distilled ┊ distilled-1.1 | |
| ltx-2.3-22b | 16.7 GB | dev ┊ distilled ┊ distilled-1.1 | |
| ltx-2.3-22b | 19.4 GB | dev ┊ distilled ┊ distilled-1.1 | |
| ltx-2.3-22b | 18.5 GB | dev ┊ distilled ┊ distilled-1.1 | |
| ltx-2.3-22b | 21 GB | dev ┊ distilled ┊ distilled-1.1 | |
| ltx-2.3-22b | 25.5 GB | dev ┊ distilled ┊ distilled-1.1 |
| Model | Quant | Size | Download |
|---|---|---|---|
| LTX-2-dev | 8.03 GB | ||
| LTX-2-dev | 10.3 GB | ||
| LTX-2-dev | 9.57 GB | ||
| LTX-2-dev | 13.4 GB | ||
| LTX-2-dev | 12.3 GB | ||
| LTX-2-dev | 15 GB | ||
| LTX-2-dev | 14.2 GB | ||
| LTX-2-dev | 16.6 GB | ||
| LTX-2-dev | 21.1 GB |
Unsloth
| Model | Quant | Size | Download |
|---|---|---|---|
| ltx-2.3-22b | 42 GB | dev ┊ distilled | |
| ltx-2.3-22b | 42 GB | dev ┊ distilled | |
| ltx-2.3-22b | 8.28 GB | dev ┊ distilled | |
| ltx-2.3-22b | 10.8 GB | dev ┊ distilled | |
| ltx-2.3-22b | 9.95 GB | dev ┊ distilled | |
| ltx-2.3-22b | 12.7 GB | dev ┊ distilled | |
| ltx-2.3-22b | 13.8 GB | dev ┊ distilled | |
| ltx-2.3-22b | 14.3 GB | dev ┊ distilled | |
| ltx-2.3-22b | 13.1 GB | dev ┊ distilled | |
| ltx-2.3-22b | 15.3 GB | dev ┊ distilled | |
| ltx-2.3-22b | 16.3 GB | dev ┊ distilled | |
| ltx-2.3-22b | 16.1 GB | dev ┊ distilled | |
| ltx-2.3-22b | 15.2 GB | dev ┊ distilled | |
| ltx-2.3-22b | 17.8 GB | dev ┊ distilled | |
| ltx-2.3-22b | 22.8 GB | dev ┊ distilled | |
| ltx-2.3-22b | 8.98 GB | dev ┊ distilled | |
| ltx-2.3-22b | 11.8 GB | dev ┊ distilled | |
| ltx-2.3-22b | 10.5 GB | dev ┊ distilled | |
| ltx-2.3-22b | 15.1 GB | dev ┊ distilled | |
| ltx-2.3-22b | 13.7 GB | dev ┊ distilled | |
| ltx-2.3-22b | 17.1 GB | dev ┊ distilled | |
| ltx-2.3-22b | 15.8 GB | dev ┊ distilled |
Vantage
LTX-2.3 (22B) — PolarQuant Q5 is a bit-packed quantization method using Hadamard-Rotated Lloyd-Max Quantization. It achieves optimal Gaussian weight quantization via Hadamard rotation, delivering near-lossless quality with significant size reduction.
Specification
| Specification | Value |
|---|---|
| Parameters | 22B |
| Transformer Blocks | 48 |
| Hidden Dimension | 4096 |
| Layers Quantized | 1,347 (of 5,947 total tensors) |
Compression Statistics:
| Component | Original Size | PQ5 Packed | Reduction |
|---|---|---|---|
| Transformer (1,347 layers) | 37 GB | 4.6 GB | -88% |
| VAE + Skip (4,600 layers) | 9.1 GB | 9.1 GB | BF16 kept |
| Upscalers | 1.3 GB | 1.3 GB | BF16 kept |
| Total | 46.2 GB | 15 GB | -68% |
Quality Metrics:
- Cosine Similarity: 0.9986 (near-lossless)
- Download Size: 15 GB
- Beats torchao INT4 on perplexity (PPL)
Hardware Requirements:
| GPU | VRAM | Status |
|---|---|---|
| A100 (80 GB) | 80 GB | Full speed |
| A100 (40 GB) | 40 GB | Recommended |
| RTX 4090 (24 GB) | 24 GB | With offloading |
Key Features:
- Mixed precision approach: transformer heavily quantized (-88%) while VAE remains BF16
- 5-bit bit-packed representation (Q5)
- 50-65% smaller than original with zero quality loss
- One-command setup with easy generation wrapper
| Model | Size | Download |
|---|---|---|
LTX-2.3-22B-PolarQuant-Q5 |
15 GB |
Installation: pip install safetensors huggingface_hub scipy
ArXiv Reference: 2603.29078
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LTX-2 requires Gemma-3-12b variants. LTX-2.3 uses text projection layers.
Official and optimized versions for ComfyUI.
gemma_3_12B_it_fpmixed: Experimental quant. Should be better than the fp8 scaledgemma_3_12B_it_fp4_mixed: 90% fp4 layers
Standard Gemma models often incorporate safety alignment that "sanitizes" or weakens specific concepts within prompt embeddings. Even when the model doesn't explicitly refuse a request, this internal filtering can dilute creative intent. For LTX-2 video generation, using a standard encoder often results in:
- Reduced Prompt Adherence: Key stylistic or descriptive terms may be ignored or weakened.
- Visual Softening: Visual intensity and fine details are often "muted" to fit generic safety profiles.
- Concept Dilution: Complex or niche creative requests are subtly altered, leading to less faithful representations of your vision.
Abliteration bypasses these restrictive alignment layers, allowing the encoder to translate your prompts into embeddings with maximum fidelity. This ensures LTX-2 receives the most accurate and un-filtered instructions possible.
Gemma-3-12b-Abliterated
Fixed versions of the abliterated Gemma-3-12b-it model by FusionCow, modified specifically for compatibility with LTX-2. The original model
| Model | Precision | Size | Download |
|---|---|---|---|
Gemma ablit fixed |
23.5 GB | ||
Gemma ablit fixed |
13.8 GB |
Gemma 3 12B IT Heretic
Models by DreamFast
| Model | Precision | Size | Download |
|---|---|---|---|
Gemma_3_12B_it Heretic |
23.5 GB | ||
Gemma_3_12B_it Heretic |
12.8 GB |
Sikaworld1990 Gemma-3-12b Abliterated
NVFP4 quantization variants by Sikaworld1990 optimized for Blackwell GPUs.
| Model | Precision | Size | Download |
|---|---|---|---|
Gemma-3-12b QAT Abliterated FP4 |
12.1 GB | ||
Gemma-3-12b QAT Abliterated FP4 |
8.91 GB | ||
Gemma-3-12b HereticX Abliterated |
15 GB | ||
Gemma-3-12b High-Fidelity Abliterated |
14.1 GB |
- FP4-HF: High-fidelity mixed precision calibration
- FP4-Pure: Pure FP4 quantization for maximum compression
- HereticX: Uncensored variant with maximum prompt fidelity
- High-Fidelity: Optimized for quality with better detail preservation
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Separated LTX2 checkpoint by Kijai and Kijai for LTX-2.3. For alternative way to load the models in Comfy.
Note
input_scaled additionally have activation scaling, and are set to run with fp8 matmuls on supported hardware (roughly 40xx and later Nvidia GPUs).
| Ver | Component | Precision | Size | Download |
|---|---|---|---|---|
| 2.3 | Video VAE |
1.45 GB | ||
| 2.3 | Audio VAE |
365 MB | ||
| 2 | Video VAE |
2.45 GB | ||
| 2 | Audio VAE |
218 MB |
| Ver | Name | Precision | Size | Download |
|---|---|---|---|---|
| 2.3 | Embeddings Connectors dev |
2.31 GB | ||
| 2.3 | Embeddings Connectors distilled |
2.31 GB | ||
| 2 | Connector dev |
2.86 GB | ||
| 2 | Connector distilled |
2.86 GB |
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- LTX-2.3-IC-LoRA-Colorizer by DoctorDiffusion (331 MB) - Colorize black and white videos
- Arnold Style by bionicman69 - Arnold Style LoRA for LTX 2.3. Get to the choppa!
- JUST-DUB-IT
- Best-Face-Swap-Video
- Image-to-Video Adapter LoRA
- Original by MachineDelusions
- siraxe variant - Stripped audio layers + rank64 compressed (2.62 GB, 655 MB rank64 bf16)
- Lightricks LTX-2.3
- Union Control - Unified IC-LoRA combining Canny + Depth + Pose control signals for multi-signal video generation conditioning
- Motion Track Control - Guides object motion using sparse point trajectories via colored spline overlays on reference videos
- vrgamedevgirl84
- ClayMationStyle - Clay animation style LoRA for LTX-2.3
- Enhancer1 - Video enhancement LoRA
- Enhancer2 - Second video enhancement LoRA
- oumoumad
- LTX-2 IC-LoRA-Ungrade - Removes color grading and contrast from footage, returning neutral ungraded appearance
- LTX-2.3 IC-LoRA-Ungrade - LTX-2.3 version of color grading removal IC-LoRA
- IC-LoRA-Outpaint - Extends video canvas by generating new content in black regions (letterbox areas), filling with temporally consistent content
- Cseti
- IC-LoRA-Cameraman v1 - Transfers camera movements (zoom, pan, tilt, orbit) from reference video to generated output
- 100percentrobot
- Audio-Reactive LORA - Generates audio-reactive videos with motion synchronized to musical elements (beats, rhythm)
- LiconStudio
- VBVR-lora-I2V - Enhances video generation for complex reasoning tasks including multi-object interactions, physical causality, and spatial relationships
- lopho
- Gantz O v1.0.0 - Movie-style LoRA (654 MB, 10000 steps)
- o-8-o
- Skin-Hair - Refines skin texture and hair rendering, reduces plastic skin artifacts, improves specular highlights (353 MB)
- Nightfury16
- Staging IC-lora 512 - Staging IC-LoRA for video composition control (512 latent scale)
- siraxe
- MergeGreen IC-lora - Maintains motion at start/end frames, use middle frames with RGB 0,191,0 (75% green fill) in IC-LoRA workflow
- TTM IC-lora - Makes cutouts cartoony and adds cartoony characters to video scenes, based on the TTM approach (use with Img To Video bypass + Add Video IC-LoRA Guide node)
- Lightricks LTX-2
- Canny Control - Edge detection control for structural guidance
- Depth Control - Depth map conditioning for 3D spatial control
- Detailer - Enhances fine details and textures in generated videos
- Pose Control - Human pose estimation control for motion guidance
- LTX-2-19b-LoRA-SPROUT
- Hydraulic press
- Cakeify
- Big Anime Breasts
- Clay Stop Motion
- Eat
- POP! Inflatable Animation - Comically inflate and pop cartoon/anime characters into confetti and fabric scraps (I2V focused)
- Anime2Half-Real - Converts anime-style content to a half-realistic aesthetic while maintaining visual consistency with the original anime reference (4500 steps, rank64)
- Outfit Switch
- Handheld run
- Atomic Explosion
- Squish
- IC luminance map
- Yoshiaki Kawajiri Retro Anime - LoRA trained on Yoshiaki Kawajiri's distinctive retro anime art style
- DonaldTrump
- WHATUSEE
- Squish – One Hand Only
- Black Venom
- HERO CAM
- Animatediff V1
- PUSH TO GLASS
- Object POV
- Group Photo
- EarthZoomOut
- Lightricks
- Wan2.1 VAE Adapter
- Latent space adapter for converting between LTX-2 and Wan2.1 VAE representations
latent_adapter_final.pt(447 MB)
ID-LoRA is a method that enables identity-preserving audio-video generation in a single model. It jointly generates a subject's appearance and voice, letting a text prompt, a reference image, and a short audio clip govern both modalities together. Built on top of LTX-2.3 (22B), it is the first method to personalize visual appearance and voice within a single generative pass.
Unlike cascaded pipelines that treat audio and video separately, ID-LoRA operates in a unified latent space where a single text prompt can simultaneously dictate the scene's visual content, environmental acoustics, and speaking style—while preserving the subject's vocal identity and visual likeness.
Key Features:
- Text prompt controls the scene and content
- Reference image preserves the subject's visual likeness
- Short audio clip preserves the subject's vocal identity
- Single unified generation pass for both appearance and voice
Available LoRAs for LTX-2.3:
| LoRA | LoRA Rank | Size | Download |
|---|---|---|---|
| ID-LoRA-TalkVid-3K | 128 | 1.1 GB | |
| ID-LoRA-CelebVHQ-3K | 128 | 1.1 GB |
Resources:
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- Text to Video Full
- Text to Video Distilled
- Image to Video Full
- Image to Video Distilled
- ICLoRA
- Video to Video
- Video to Video Detailer
- Text-to-video
- Text-to-video Distilled (faster, 8 steps)
- Image-to-video
- Image-to-video Distilled (faster, 8 steps)
- Depth control
- Canny control
- Pose control
RuneXX LTX-2.3 Workflows:
- I2V T2V Basic
- I2V T2V Basic GGUF
- I2V T2V Dev Full-Steps
- I2V T2V Simple Single Pass
- T2V Basic
- T2V Simple Single Pass
Talking-Avatar-TTS:
- I2V T2V Talking Avatar (Qwen-TTS)
- I2V T2V Talking Avatar (Fish-Audio-Pro)
- I2V T2V Talking Avatar (OmniVoice-TTS)
Video-2-Video:
- V2V Just Talk Prompt Lipsynced Voice
- V2V Just Talk Prompt Lipsynced Voice Sam3
- V2V Dub It lip-synced dubbing multilanguage
- V2V Extend Any Video
- V2V Expand Any Video IC-Lora-Outpaint
- V2V Foley Add Sound To Any Video
- V2V ReTake recreate any section of any video
Custom-Audio:
First-Last-Frame:
- FLF2V First Last Frame
- FLF2V First Last Frame Custom Audio
- FLF2V First Last Frame Transition LoRA
- FML2V First Middle Last Frame Guider
- FML2V First Middle Last Frame Injection
- FML2V Guider Custom Audio
Long-Video-Experimental:
- I2V T2V Long Video Custom Audio Loop
- I2V T2V Long Video Custom Audio
- I2V T2V Long Video Custom Audio singlepass loop
3-Pass-Experimental:
Control-reference:
- I2V TV2V Transfer Camera Movements IC-Cameraman LoRA
- I2V TV2V Transfer Body Movements IC-Union-Control-lora DWPose
- I2V TV2V Transfer Body Movements IC-Union-Control-lora SDPose
Music-Video-Creator:
- I2V T2V Music-Video-Creator Multi-Scene Custom Audio
- I2V T2V Music-Video-Creator Multi-Scene Custom Audio Low RAM
Helper-Workflows:
- AceStep-XL Create Music From a Prompt
- Flux-Klein Transform Firstframe
- Qwen-Image Transform Firstframe Next Scene or Different Angle LoRA
Other-examples:
RuneXX LTX-2 Workflows old pre_feb2026
- First Last Frame (guide node)
- First Last Frame (in-place node)
- First Middle Last Frame (guide node)
- I2V Basic (GGUF)
- I2V Basic
- I2V IC-Control (pose)
- I2V Simple First Middle Last Frame (1-pass K-Sampler)
- I2V Talking Avatar (voice clone Qwen-TTS)
- I2V and T2V (beta test sampler previews)
- I2V and T2V Basic (Custom Audio)
- I2V and T2V IC-Control (All-In-One Pose Canny Depth)
- I2V and T2V Simple (1-pass K-Sampler)
- I2V and T2V Simple (1-pass)
- T2V Basic (GGUF)
- T2V Basic (low vram)
- T2V Basic
- T2V Talking Avatar (voice clone Qwen-TTS)
- V2A Foley (add sound to any video)
- V2V (extend any video)
- V2V Head Swap Experimental (BFS lora)
- V2V Just Dub It (experimental)(translate speech auto dubbing)
- V2V Just Dub It (with voice clone)(auto dubbing translation)(experimental)
