ArtBot

ArtBot is an AI image upscaler tool. A free, no-login Stable Diffusion interface running on the volunteer AI Horde, with text to image, img2img, inpainting, ControlNet, sketch and live paint tools, upscalers and a community image gallery.

ArtBot is a browser front end for Stable Diffusion image generation that draws its compute from the AI Horde, a distributed cluster of volunteer workers. Instead of running a model locally or paying a hosted service, requests are queued to that shared network, which is why the site can advertise itself as free and usable without an account. The interface exposes the knobs that experienced Stable Diffusion users expect: sampler, model, orientation and resolution, steps, guidance, CLIP skip, seed, LoRAs, textual inversions and workflows, plus post-processing options such as GFPGAN and CodeFormers for faces, background stripping and several upscalers including RealESRGAN variants and AnimeSharp. Optional flags cover Karras sampling, hires fix, tiling, slow workers, NSFW generations and a prompt replacement filter. Text to image is only the entry point. The same workspace bundles an image-to-image panel with upload from device or URL, inpainting, ControlNet, a sketch canvas under Draw and a Live Paint mode. An interrogate tool works in the opposite direction, reading an existing image to recover a usable prompt. Finished and pending jobs live in a gallery, and a rate images page lets users score output, which feeds the preference data the Horde uses to route work. A showcase surfaces community results, and model and worker detail pages let you inspect what is actually serving your request. Practically, ArtBot suits people who want Stable Diffusion output without a GPU, an install or a credit card, and who accept queue times as the trade. Hobbyists, prompt tinkerers and anyone exploring SDXL models on modest hardware are the natural audience. Because generation depends on volunteers, throughput and model availability shift with network load, and speed is not something the tool controls. Users who need predictable latency or commercial-grade throughput should look at paid hosted generators; ArtBot is the option for experimenters who value breadth of controls and zero cost over guaranteed turnaround.