MotionSites vs Spline

Spline and MotionSites operate in different layers of the stack. Spline is the authoring environment: a browser 3D editor plus Hana, a 2D canvas with infinite canvas, auto layout, vector networks, and Booleans. Interaction and animation are native — states, events, timeline, physics, particles — and Omma orchestrates code, image, and 3D generation so you can prompt a complete scene, website, or app. WebGPU support, CSV/JSON/DOC import, and GLB/GLTF export make output portable, and viewers extend scenes to web embeds, mobile experiences, and native Swift/Kotlin code. Collaboration, comments, invites, and shared links are built in. Per its latest news, Hana V2 adds MCP support, WebGPU, GLB/GLTF import, SVG/PDF export, an AI agent, new transitions, and performance gains.

MotionSites is content, not a canvas. It ships prompts and section blueprints — heroes, footers, feature blocks, CTAs, full landing-page packs (RIVR, NOVA, Orbit Engineers), named design packs (EMBER.dsgn, Digital Epoch), and an animated-backgrounds category — plus an Academy and daily library drops. Its only listed integration is MCP, and it explicitly is not an editor: there's no drag-and-drop surface and no component system to drop into Figma or Webflow. The vendor's own framing is that it's the prompt layer in front of an AI site builder.

Spline is freemium, so a buyer can evaluate the editor and Omma agent before paying; the exact free-tier ceilings and paid tiers aren't in the data provided, so treat the upgrade trigger as unconfirmed and check the vendor page. The practical cost question for Spline isn't the sticker price — it's whether your team needs collaboration seats, since real-time collaboration, comments, invites, and shared links are the workflow features that push teams off a free plan.

MotionSites is listed as paid with no retrievable tiers, which is itself a buying signal: you can't confirm what a subscription costs or includes before committing. Its own 'not for' list flags buyers who need published, confirmed pricing. Budget accordingly — MotionSites is an additive line item on top of whatever AI site builder you already pay for, since it can't render a page on its own. For a solo founder that's cheap in theory (prompts instead of design hours) but unverifiable in practice until tiers are public. Spline can be the only tool on the invoice; MotionSites never is.