LTX-Video 2B (ltx-video family)
Parameters: 2 B (active:  B)
Mixture-of-experts: no
Release: 2024-11
Modality: video
Model license: LTX-Video Open Weights (OpenRAIL-M) (commercial use: yes)
License note: OpenRAIL-M open-weights license; commercial use permitted subject to use-based restrictions.
Architecture: dit (backbone 2 B)
Backbone size (GB by quant):
fp16: 6.34
fp8: 4.46
q8: 2.17
q4: 1.42
Additional components: name: T5-XXL text encoder
fp16_gb: 9.73
q4_gb: 2.9
offloaded: yes
VAE size: 0 GB
Default output: 1216×704, 121 frames (~4 s)
Recommended setup: gb: 10
quant: fp8 + offload
Memory without offload: 12 GB; offload floor: 6 GB
Device classes: mac, nvidia, amd
Tools: ComfyUI, Diffusers
Notes: Lightricks' fast DiT video model (2B), notable for near-real-time generation. The diffusers docs cite ~10GB VRAM with fp8 layerwise casting plus group offloading (the T5 encoder is offloaded). GGUF Q4_K_M (1.42GB backbone) + quantized T5 brings it to ~6GB. Generates 1216x704 at 30fps. OpenRAIL-M, commercial OK. Sources: Lightricks card, diffusers LTX docs, city96 GGUF.