Harth vs Luw.ai Studio

Harth is a browser-based workspace for architecture practices to design, research, collaborate on, and present projects, with AI agents working on building data. It imports Revit, Archicad, SketchUp, and IFC models while preserving elements and coordinates. About 40 discipline-specific agent skills address areas such as structure, envelope, interiors, and analysis. For site context, it offers 3D satellite terrain, nearby-building imports, boundary tracing, geolocation, and sun studies. Users can render a model view, apply masking and lighting presets, and upscale images for print. Teams can work together using live cursors, presence, threaded comments pinned over 3D, and project voice. Harth also converts 360-camera footage into an explorable, measurable 3D scan, with processing stated at one to two days. Exports include PDF, image, and 3D files, 360-degree views, and recorded walkthroughs. All plans include the full workspace and differ by AI usage; monthly credits can be topped up with packs. Free includes 700 credits per month; Plus is $59 per month for 5,000 credits, and Pro is $149 per month for 15,000.

Luw.ai Studio is a browser-based floor-plan generator and 3D design studio that turns briefs, photos, sketches, and other supported inputs into editable scenes. Its in-editor AI architect uses more than 40 browser-side tools to create and edit measurable geometry that can be undone. The generator makes scaled 2D and 3D plans with walls, doors, windows, dimensions, and baseline room sizes and clearances. Users can furnish rooms from a catalog of more than 150 items, with placements checked against door swings and clearances. Rendering supports photorealistic or stylized 4K and 8K output, prompts, reference images, and day or night settings. Studio imports DXF and IFC, with IFC described as early alpha, and exports dimensioned PNG or SVG plans and GLB, OBJ, and STL models. Sharing supports view-only, download, or edit access; MCP access enables headless use with Claude Desktop, Cursor, or a user's own agent. The free plan offers two credits per day, while paid plans start at $19 per month.