Open source

LTX-2

Lightricks (Israel) open-sourced this 19B joint audio-video model in Oct 2025 under the LTX-2 Community License. Native 4K, up to 50fps and 20 seconds, with video and audio from one model; BF16 weights are about 38GB, and FP8/FP4 fits 24GB.

24 GB

VRAM floor

19B

Parameters

open-weight models

Open source Highest bar

Weights are free, hardware is not: you buy the GPU up front (one-time estimate, may rise) and still pay for power and time. Six of the twelve are Apache 2.0 (HappyHorse-1.0, SANA-WM, Bernini, MAGI-2, LingBot-Video, LongLive 2.0); LTX-2 and LTX-2.5 use community licences and SANA-Video uses the NVIDIA Open Model License. Hardware runs from one RTX 5090 to 8× H100. See all 12 →

Hardware requirements, as published

VRAM floor: About 38GB of BF16 weights; FP8/FP4 quantisation fits 24GB
Official hardware: 1× RTX 4090 24GB (FP8/FP4); official examples use H100
Output: 4K / up to 50fps / 20 seconds, native synchronised audio
Size: 19B DiT + Gemma 3 text encoder + dual VAE + vocoder
Licence: LTX-2 Community License (confirm commercial terms)

LTX-2 is a production-ready 19B model for synchronised 4K video and audio generation.Lightricks · github.com/Lightricks/LTX-2

1 records · showing Specs checked 2026-11-10 · hardware 2026-10-21

#	Platform / model	Layer	VRAM · setup	One-time hardware
—	OSSLTX-2 ↗Lightricks (IL) · 2025-10 · community licence · 19B	Open source	24 GB38GB BF16; FP8/FP4 fits 24GB	≈ ¥24,000 · one-time1× RTX 4090 24GB · estimate, may rise

Other models in this layer

LTX-2.5 HappyHorse-1.0 SANA-WM Bernini MiniMax H3-Base MAGI-2 Preview SANA-Video LongLive 2.0 Matrix-Game 4.0 SkyReels-V3 LingBot-Video

⚖

Data on this page is indicative only — listing a vendor is not a recommendation or guarantee.Figures are compiled and converted from public pages and can change at any time; check the vendor's current pricing before you buy. Read the disclaimer