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Company Startup

Stability AI

Founded 2019 · London, UK · ~$225M raised; reported ~$2.8B valuation (2026)

8.8/10 Strong
Flagship

Free (self-host) or ~$0.03-$0.08 per API image

Editorial · no paid placements

Stability AI is the company behind Stable Diffusion and Stable Audio, founded 2019, led by CEO Prem Akkaraju, valued around $2.8B. Verified June 16, 2026.

Products by Stability AI

  1. Stable Diffusion Stability AI's open-weight image model family. SD 3.5 Large remains the flagship as of June 2026. Free to self-host with a compatible GPU, or access via Stability API at 3-8 credits per image.
    Free (self-host) or ~$0.03-$0.08 per API image 8.8/10
  2. Stable Audio Stability AI's licensed-data audio model family for music, sound effects, brand audio, open-weight experimentation, API access, and enterprise licensing. Stable Audio 3.0 adds Small, Medium, and Large models with six-minute generation options.
    Open weights + hosted/API/enterprise 7.3/10

Stability AI is the open-model company that put generative AI on the map with Stable Diffusion, the open-source image model that seeded a vast ecosystem of tools and fine-tunes, and now also builds Stable Audio for music and sound. Founded in 2019 and headquartered in London, the company went through financial turbulence and a leadership change, with Prem Akkaraju taking over as CEO, and is reported around a $2.8 billion valuation after roughly $225 million in funding.

Key Facts

Founded2019
HQLondon, UK
CEOPrem Akkaraju
FundingAbout $225M raised
ValuationReported around $2.8B (2026)
FlagshipStable Diffusion (open image model)
AlsoStable Audio (music and sound generation)
EcosystemSeeded tools like Automatic1111, ComfyUI, InvokeAI
Model approachOpen weights and open research

What They Do

. Stable Diffusion became foundational to open-source generative imaging, powering countless downstream apps, fine-tunes, and interfaces, and Stable Audio extends the open approach to music and sound. The company sells API access and enterprise licensing on top of the open releases.

Its identity is the open-model bet: broaden access and build an ecosystem, in contrast to closed labs. That openness drove enormous adoption but also made monetization harder, contributing to past financial strain and the leadership reset under Akkaraju, who brings visual-effects and entertainment-industry experience.

Current Flagship Products

  • Stable Diffusion: The open-source image generation model that anchors a large third-party ecosystem.
  • Stable Audio: Stability’s generative model for music and sound.

Strategic Position

Stability AI’s moat is the Stable Diffusion brand and the open ecosystem built around it, which keeps it central to open-source generative imaging. Its challenge is turning that influence into durable revenue while better-funded labs (closed and open) compete, and while open-weight image leadership is increasingly contested by models like Flux. The CEO change and refinanced footing aim to stabilize that path.

For AIpedia readers, Stability matters most for open, self-hostable image and audio generation and the ecosystem it enables. For turnkey quality or commercial-safety guarantees, hosted or enterprise-focused alternatives may fit better.

Sources

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