Open-Sora (hpcaitech)
Leading#1 in Open sourcehigh confidence
The category-defining open-source video generator (~29k GitHub★) — text/image-to-video with performance comparable to HunyuanVideo on VBench.Our read
Why it ranks #1
About 29k GitHub stars and top placement in the cited open-source model comparison make Open-Sora the highest-adoption general open video project in this track.Here is the catch
substantial GPU requirements
setup is research-oriented rather than consumer-friendly
quality and temporal consistency trail the best closed models
Does this well
large research and contributor community
transparent training and inference stack
useful baseline for experimentation and fine-tuning
Pricing
Checked by hand on 2026-07-23. Prices in this category change often — if this looks wrong, it probably is.
Key features
Text and image-to-video modelsMulti-resolution and variable-duration trainingDistributed training and inferencePublished checkpoints and evaluation tooling
Quick facts
More in this area
The rest of the Open source column.- 2Wan (Alibaba, Wan2.2)Alibaba's Wan (~16.8k GitHub★) — widely regarded as the strongest open-weight text-to-video model; 1.3B variant runs on 8GB VRAM.
- 3HunyuanVideo (Tencent)Tencent's 13B open video model (~12.4k GitHub★) — a benchmark reference for open-source cinematic text-to-video quality.
- 4CogVideo / CogVideoX (Zhipu)Apache-2.0 CogVideoX (~12.9k GitHub★) — loads natively in HF Diffusers, strong prompt following and smooth frames; a go-to for developers.
- 5LTX-Video (Lightricks)Lightricks' real-time DiT video model (~10.7k GitHub★) — notable for fast, production-capable generation and active releases.
- 6Mochi 1 (Genmo)Genmo's Apache-2.0 Mochi 1 (~3.7k GitHub★) — a recognized open text-to-video model, lower adoption than the leaders above.
- 7HBAI-Ltd/Toonflow-appOpen-source desktop app that turns a novel or script into an animated short drama, chaining AI screenwriting, storyboarding and shot generation.