ArchSynth vs RenderAI

ArchSynth has no write-up on Specifiction yet; its figures are above.

RenderAI is a browser-based service for turning sketches, drawings, 3D models, and photos into photorealistic renderings at 4K or higher. It is aimed at architects, interior designers, product designers, and engineers. Users can animate generated images into AI videos, with choices for resolution, duration, and token use. Project Boards offer a shared canvas for comparing renders, arranging moodboards, and preparing client presentations. For CAD work, the service accepts screenshots or JPG and PNG exports from Revit, Rhino, Vectorworks, Archicad, SketchUp, and AutoCAD; it can also post-produce, upscale, and animate renders from Enscape, D5 Render, and Twinmotion. Uploads can be JPG, PNG, WebP, or HEIC, up to 5MB. It runs in a browser, needs an internet connection and a Google or Microsoft account, and requires no software download. The limited free plan requires no credit card; paid plans start at $13/mo. Tokens expire at renewal or when a subscription is paused or canceled, and do not roll over.