Table of Contents
Quick Answer
- Hugging Face models hosted: 1.2M (HF 2027)
- Weekly downloads (top models): 4.8B (HF)
- GitHub AI repos: 3.4M (Octoverse 2027)
- Top open LLM: Llama 4 (180M downloads H1 2027)
- DeepSeek-V3.5 on HF: 84M downloads H1 2027
Key Open Source AI Statistics
Stanford HAI's 2027 AI Index notes 64% of new AI research releases publish open weights, up from 34% in 2023. Hugging Face hosts 1.2M models and 340K datasets. Linux Foundation's AI & Data projects include PyTorch (now the leading training framework, 71% of new models).
Market Data
| Metric | 2027 Value | Source |
|---|---|---|
| HF models | 1.2M | Hugging Face |
| HF datasets | 340K | Hugging Face |
| HF spaces | 860K | Hugging Face |
| GitHub AI repos | 3.4M | Octoverse |
| PyTorch share | 71% | Stanford HAI |
| Llama 4 downloads | 180M | Meta |
| Llama family cumulative | 1.8B | Meta |
| DeepSeek-V3.5 downloads | 84M | HF |
| Mistral models downloads | 68M | HF |
| Qwen 3 downloads | 72M | Alibaba |
Top Open Models (H1 2027)
| Model | Developer | Downloads |
|---|---|---|
| Llama 4 (all variants) | Meta | 180M |
| DeepSeek-V3.5 | DeepSeek | 84M |
| Qwen 3 | Alibaba | 72M |
| Mistral Large 2 | Mistral | 46M |
| Phi-4 | Microsoft | 38M |
| Gemma 3 | 34M | |
| Yi 2 | 01.AI | 22M |
| Falcon 3 | TII | 18M |
Ecosystem
- Open-source AI startups: 2,140 (CB Insights)
- Linux Foundation AI & Data projects: 64
- PyTorch contributors (2026): 12,400 (LF)
- Apache-2 / MIT licensed models on HF: 68%
- Contributors to top 10 open models: 2,840+ (GitHub)
Sources
- Hugging Face — 2027 Annual Stats
- GitHub Octoverse 2027
- Stanford HAI — AI Index 2027
- Linux Foundation — AI & Data 2027
- Meta — Llama Ecosystem Report 2027
- DeepSeek — Model Card / Downloads 2027
- Alibaba Qwen Team — Open Model Report 2027
- Mistral AI — 2027 Ecosystem Update
- CB Insights — Open-Source AI Startups 2027
- Epoch AI — Open Model Tracker 2027
Conclusion
Open-source AI in 2027 is the backbone of the global AI ecosystem. More at misar.blog.