Stability AI, based in London and founded in 2019, makes the Stable Diffusion family of open-weight image models and models for audio, video and 3D. It raised a $76 million Series B in August 2026 backed by Universal Music Group, Warner Music Group, Sony Music Group and Electronic Arts.
At a glance
| Price from | Free (open weights) |
| Best for | Creative studios and developers building on open media models |
From Stability AI's own website.
What stands out
- Well known open image models
- Backing from all three major record labels
Worth knowing
- Open release pace has slowed
- Focus shifting to licensed music tools
How it ranks
Stability AI is ranked 10th of 10 in Best Open-Source AI Startups (Lister Score 85.7).
#10 in Best Open-Source AI Startups · Lister Score 85.7
Stability AI's August 2026 round brought its total fundraising to $232 million, according to TechCrunch..
| Rank | Best Open-Source AI Startups | Score |
|---|---|---|
| 1 | Mistral AI | 97.3 |
| 2 | Moonshot AI | 96.0 |
| 3 | Together AI | 94.8 |
| 4 | Black Forest Labs | 93.5 |
| 5 | Reflection AI | 92.2 |
| 6 | Ollama | 90.9 |
| 7 | LangChain | 89.6 |
| 8 | Inferact | 88.3 |
| 9 | Nous Research | 87.0 |
| 10 | Stability AI | 85.7 |
Frequently asked questions
How does Stability AI rank on Lister?
Stability AI is ranked 10th of 10 in Best Open-Source AI Startups (Lister Score 85.7).
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