Stability AI is a generative 📝Artificial Intelligence (AI) company founded in 2020 by Emad Mostaque and Cyrus Hodes. The company released Stable Diffusion — an open-source text-to-image model — in August 2022, which became one of the most widely adopted generative AI tools and catalyzed the broader AI image generation movement. Stability AI is headquartered in London.
Key Facts
- Founded: 2020
- Founders: Emad Mostaque (CEO until March 2024), Cyrus Hodes
- Flagship product: 📝Stable Diffusion (text-to-image, open-source weights)
- Other models: Stable Audio, Stable Video Diffusion, StableLM (language models)
- Approach: Open-source model distribution — released model weights publicly, unlike closed competitors
- CEO departure: Mostaque resigned March 2024 under investor pressure despite $5.4M monthly revenue
Copyright Litigation
Stability AI is a defendant in multiple copyright infringement lawsuits that are shaping the legal boundaries of AI 📝training data use:
Andersen v. Stability AI (U.S.)
Filed January 2023 in federal court by artists including Sarah Andersen. The class-action lawsuit alleges Stability AI, Midjourney, and DeviantArt committed copyright infringement by using the LAION dataset — approximately 5 billion images scraped from the internet — to train Stable Diffusion without the artists' consent or compensation. The case is in discovery with trial set to begin September 8, 2026.
Getty Images v. Stability AI (U.K.)
Getty Images sued Stability AI in the U.K. High Court, alleging copyright and trademark infringement for using millions of Getty's images to train Stable Diffusion. In November 2025, the High Court issued the first major U.K. ruling on AI training and copyright — but largely rejected Getty's central copyright claim. The court found that the training and development of Stable Diffusion did not occur in the United Kingdom, which undermined the jurisdictional basis of the copyright allegations. Limited trademark liability was found.
Getty Images v. Stability AI (U.S.)
A parallel case filed in the U.S. District Court for the District of Delaware. This case remains active alongside the broader landscape of over 70 AI copyright lawsuits filed as of late 2025.
Why It Matters
Stability AI occupies a unique position in the AI copyright landscape: its open-source approach made Stable Diffusion the most accessible and widely deployed generative image model, but that same openness made the 📝training data provenance question unavoidable. Unlike closed-model companies that can obscure their training corpora, Stability AI's open weights and documented dataset (LAION-5B) made it the most litigated test case for whether scraping the open web for AI training constitutes 📝fair use.
The Andersen trial in September 2026 will be the first U.S. jury trial on AI image generation and copyright — a landmark that could set precedent well beyond Stability AI.