Sogni vs Stable Diffusion WebUI Forge

Sogni is an AI image-generation service with text-to-image creation, reference-image support, image editing, and API access. It supports PNG, JPG, and WebP output, and commercial use is included with Sogni Unlimited. The Free plan offers unlimited on-device rendering on Mac and iOS, more than 150 open-source models locally, free monthly Spark for filtered Supernet jobs, basic Supernet cloud rendering, and limited API access. Premium Spark costs $1.99 a month and provides pay-as-you-go Spark credits, a priority queue, and access to supported premium and partner models, with no monthly commitment. Sogni Unlimited costs $20 a month and includes credit-free fair-use Supernet rendering for supported open-weight models, full SDK and API access, up to four concurrent image jobs, and a three-day free trial. Unlimited Pro costs $50 a month and allows up to 16 concurrent image jobs, with higher-priority queue placement and a larger media queue. Enterprise has custom pricing, dedicated Supernet capacity, custom rate limits and SLA, and team account management.

Stable Diffusion WebUI Forge is a free, open-source platform built on Stable Diffusion WebUI for image generation and editing. It supports text-to-image creation, reference images, and image editing, with PNG, JPG, JPEG, WebP, AVIF, and GIF listed as output formats. The project aims to ease development, manage resources, speed inference, and explore experimental features. Its interface is based on Gradio, and the README offers a one-click installation package that includes Git and Python. Windows launch scripts, shell scripts, a macOS environment script, and source installation instructions are listed. Forge includes GPU memory management and components such as LoRAs, ControlNets, IP-Adapters, Instant-IDs, reference-only methods, and extensions. Several Flux BitsandBytes and GGUF variants are natively supported, with GPU weight and swap controls; some variants support LoRA. The README lists txt2img and img2img API endpoints as normal, while improved Flux support is pending. The project is described as under construction, so its documentation, interface, and functionality may change. Its license is AGPL-3.0.