Stable Diffusion 2.1
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A to Z
- A · App
- No
- B · Built By
- Stability AI
- C · CEO & Politics
- Prem Akkaraju — No public partisan activity documented
- D · Date
- 2022
- E · Expertise
- Intermediate+
- F · Free Tier
- Yes
- G · Generates
- Images
- H · Deployment
- Cloud + Local (open weights)
- I · Inputs
- Text→Image
- J · Jurisdiction
- UK
- K · Key Staffers
- Prem Akkaraju (CEO), Robin Rombach (Lead Researcher)
- L · Languages
- English-primary
- M · Model Type
- Image Generation
- N · Safety Issues
- Synthetic media risks: potential copyright/style imitation issues, deepfake or deceptive content misuse, bias in generated outputs, and prompt/NSFW policy bypass attempts.
- O · Open Source
- Yes — open weights
- P · Pricing
- Discontinued (official weights no longer published)
- Q · AIDb Rating
- [UNKNOWN]
- R · What Makes It Special
- Stability AI's Stable Diffusion 2.1 (December 7, 2022), a fine-tune of Stable Diffusion 2.0 released a few weeks after it, with the same OpenCLIP text encoder; trained with more data and a less aggressive adult-content filter that cut false positives, it renders people better than 2.0, improves anatomy, hands and art styles, handles non-standard resolutions and extreme aspect ratios, and works better with negative prompts.
- S · Stock / Status
- Private
- T · Training Cutoff
- [UNKNOWN]
- U · Users
- [UNKNOWN]
- V · Voice Chat
- No
- W · Weights
- Downloadable
- X · X Handle
- @StabilityAI
- Y · Year Founded
- [UNKNOWN]
- Z · Bottom Line
- Open-weights Image Generation from Stability AI, released 2022.
Data completeness 85% · Last verified 2026-05-12 · Primary source ↗
Cite this
“Stable Diffusion 2.1.” AIDb — The AI Database. Verified 2026-05-12. https://theaidatabase.com/m/stable-diffusion-21.html
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