PixArt-Σ
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A to Z
- A · App
- No
- B · Built By
- Huawei
- C · CEO & Politics
- Ren Zhengfei (Founder), Eric Xu (Rotating Chairman) — Not publicly documented (PRC-based; operates under Chinese regulatory environment)
- D · Date
- 2024
- E · Expertise
- Intermediate+
- F · Free Tier
- Yes
- G · Generates
- Images
- H · Deployment
- Cloud + Local (open weights)
- I · Inputs
- Text→Image
- J · Jurisdiction
- China
- K · Key Staffers
- Ren Zhengfei (Founder & CEO)
- L · Languages
- Chinese-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
- Free (open weights, CreativeML OpenRAIL++-M)
- Q · AIDb Rating
- [UNKNOWN]
- R · What Makes It Special
- PixArt-Σ, a 0.6B-parameter diffusion transformer for text-to-image generation, trained weak-to-strong from PixArt-α, that generates 1024px, 2K and 4K images directly in a single sampling process using a T5 text encoder and a VAE.
- S · Stock / Status
- Private (employee-owned)
- T · Training Cutoff
- [UNKNOWN]
- U · Users
- [UNKNOWN]
- V · Voice Chat
- No
- W · Weights
- Downloadable
- X · X Handle
- @Huawei
- Y · Year Founded
- [UNKNOWN]
- Z · Bottom Line
- Open-weights Image Generation from Huawei, released 2024.
Data completeness 85% · Last verified 2026-06-11 · Primary source ↗
Cite this
“PixArt-Σ.” AIDb — The AI Database. Verified 2026-06-11. https://theaidatabase.com/m/pixart-sigma.html