Stability AI
In plain wordsA London company that paid for and released Stable Diffusion, a free image-generating AI anyone could download, and later models for video, audio and 3D.
A British generative-AI company that paid for the training and public release of Stable DiffusionStable Diffusion, prop. n.: A widely used image-generating AI whose model files were released for anyone to download, so people could run it on their own computers and adapt it. (August 2022), whose downloadable weights brought high-quality text-to-image generation to ordinary computers and spawned a large ecosystem of fine-tuned variants and tools. The model was developed with the CompVis group at Ludwig Maximilian University of Munich and the company Runway, building on their latent diffusion modellatent diffusion model, n.: A diffusion image generator that works on a shrunken, compressed version of each picture instead of the full-size pixels, which makes it far cheaper to train and run. research, and trained on data from LAIONLAION, prop. n.: A mostly volunteer group, registered as a German nonprofit, that compiled free lists of billions of online pictures and their captions. Stable Diffusion and other image generators were trained on them.. Stability later released SDXL, Stable Diffusion 3 and 3.5, and models for video, audio and 3D, typically under licenses that restrict large commercial users. Its use of web images made it a defendant in landmark copyright suits: in November 2025 the High Court of England and Wales largely ruled for it against Getty Images, finding that the trained model was not an infringing copy of the photographs, while related US cases continued.
Origin
Founded in London in 2019 by Emad Mostaque, a former hedge-fund manager, with Cyrus Hodes. Mostaque resigned as chief executive in March 2024 amid financial difficulties and staff departures; Prem Akkaraju became chief executive in June 2024, with Sean Parker as executive chair.
Related
- Stable DiffusionStable Diffusion, prop. n.: A widely used image-generating AI whose model files were released for anyone to download, so people could run it on their own computers and adapt it.
- latent diffusion modellatent diffusion model, n.: A diffusion image generator that works on a shrunken, compressed version of each picture instead of the full-size pixels, which makes it far cheaper to train and run.
- LAIONLAION, prop. n.: A mostly volunteer group, registered as a German nonprofit, that compiled free lists of billions of online pictures and their captions. Stable Diffusion and other image generators were trained on them.
- diffusion modeldiffusion model, n.: An AI that learns to create images, sound or video by practicing noise removal: shown pictures buried under static, it learns to clean them up, then builds new ones starting from pure static.
- AI copyright litigationAI copyright litigation, n.: The many lawsuits in which authors, artists, news organizations, record labels and others accuse AI companies of copying their work without permission to build or run AI models.
- open-weight modelopen-weight model, n.: An AI model whose trained internal numbers are published for anyone to download and run on their own computers, even if the data and code used to make it stay private.
Mentioned in
LAIONLAION, prop. n.: A mostly volunteer group, registered as a German nonprofit, that compiled free lists of billions of online pictures and their captions. Stable Diffusion and other image generators were trained on them., model licensemodel license, n.: The legal terms under which an AI model may be downloaded and used — for example, whether businesses may use it, whether changes may be shared, and which uses are banned., Black Forest LabsBlack Forest Labs, prop. n.: A German AI company founded in 2024 by original creators of Stable Diffusion, which makes the FLUX image-generation models., RunwayRunway, prop. n.: A New York company that makes AI tools for generating and editing video, used by filmmakers and artists; it helped create the image generator Stable Diffusion.