PixArt-Σ

Released
2024-03-30
Last refreshed
2026-05-19
Status
Researched 174d ago
Open sourceCommercial use: permittedMultimodal

PixArt-Σ is a released general LLM work model with open-source; evaluate it while provider pricing coverage matures.

Specifications
Family
PixArt
Released
2024-03-30
Parameters
600M
Architecture
Diffusion Transformer
Specialization
image-generation
Openness
Open source
License
Apache 2.0OSI-approvedPermitted
Weights
Available
Code
Unknown
Created by

Bridging technology and business through AI

Hong Kong, China
Founded 2012
Website
Pricing

No tracked provider pricing is available yet.

About

PixArt-Σ (Sigma) by Huawei Noah's Ark Lab. A 600M-parameter Diffusion Transformer capable of generating images at up to 4K (3840×2560) resolution without an upscaler. Uses 'weak-to-strong training' on higher-quality data. Competitive with Adobe Firefly 2, Imagen 2, and DALL-E 3 at a fraction of the parameter count. Open source under Apache 2.0. Available via Fal API (fal-ai/pixart-sigma).

Providers

No active provider routes are tracked for this model yet.

Capabilities

Multimodal

Benchmark peer barsfor Coding

No task-mapped benchmark peers are available for this model yet.

Migration checks

No linked migration route is available for this model yet.