Best open-source AI video generators (2026)
9 tools that publish open model weights, ranked by public data: verified listings first, then tools that publish a price, then how many facts they publish. Nobody pays for position. Checked Oct 26, 2026
| # | Tool | Starts at | Free plan | Watermark | Max resolution | Max length |
|---|---|---|---|---|---|---|
| 1 | LTX-2 / LTX-Video (Lightricks) Open-source model Visit LTX-2 / LTX-Video | Free (open source) | Free plan | Not stated | 4K | 60s clips |
| 2 | CogVideoX (Zhipu AI) Open-source model Visit CogVideoX | Free (open source) | Free plan | Not stated | 1360x768 | 10s clips |
| 3 | Wan (Alibaba) Open-source model Visit Wan | Free (open source) | Free plan | Not stated | 720p | Not stated |
| 4 | HunyuanVideo (Tencent) Open-source model Visit HunyuanVideo | Free (open source) | Free plan | Not stated | Not stated | Not stated |
| 5 | MAGI-1 (Sand AI) Open-source model Visit MAGI-1 | Free (open source) | Free plan | Not stated | Not stated | Not stated |
| 6 | SkyReels (Skywork) Open-source model Visit SkyReels | Free (open source) | Free plan | Not stated | 720p | Not stated |
| 7 | Open-Sora (HPC-AI Tech) Open-source model Visit Open-Sora | Free (open source) | Free plan | Not stated | Not stated | Not stated |
| 8 | Stable Video Diffusion (Stability AI) Open-source model Visit Stable Video Diffusion | Free (open source) | Free plan | Not stated | 576x1024 | Not stated |
| 9 | Genmo (Mochi) Open-source model Visit Genmo | Free (open source) | Free plan | Not stated | Not stated | Not stated |
What each vendor says
- LTX-2 / LTX-Video:
LTX-2.5 is the recommended model ... Its weights are published as one file per component
- CogVideoX:
2024/8/27: We have open-sourced a larger model in the CogVideoX series, CogVideoX-5B.
- Wan:
Apache-2.0 license
- HunyuanVideo:
Single-gpu Inference
- MAGI-1:
This repository contains the code for the MAGI-1 model, pre-trained weights and inference code.
- SkyReels:
Jan 29, 2026: We release the inference code and model weights of SkyReels-V3.
- Open-Sora:
Open-Sora 2.0: Training a Commercial-Level Video Generation Model in $200k
- Stable Video Diffusion:
The model is intended for both non-commercial and commercial usage.
- Genmo:
You can run and customize Mochi using our open-source repository or ComfyUI
Quoted from each vendor's own site. We don't test tools; we compare what vendors publish.
Questions
What is the cheapest open-source AI video generator?
None of the 9 listed publish a paid monthly price.
Is there a free open-source AI video generator?
9 of the 9 say they have a free plan: LTX-2 / LTX-Video, CogVideoX, Wan, HunyuanVideo, MAGI-1, SkyReels, Open-Sora, Stable Video Diffusion and 1 more. Free plans usually limit credits, length or resolution.
Which ones have no watermark?
0 of the 9 state that paid plans export without a watermark; none state a watermark-free free plan.
Which support 4K?
1 of the 9 publish 4K output (generation, export or upscaling): LTX-2 / LTX-Video.
How is this list ranked?
By published data only: tools whose facts we verified on the vendor's own pages come first, then tools that publish a price, then by how many facts they publish. No vendor pays for position, and paid links never change the order.