Spline

What Spline Is

Spline is a collaborative 3D and 2D design platform that runs in the browser. Its footer describes it as "collaborative 3D design in the browser, all in real-time," and the home page pitches it as a way to "Superpower your team to deliver production-ready interactive 2D and 3D experiences all in one platform." It is built for design teams, agencies, freelancers and startups making interactive websites, product visuals and motion, and it also lists a path for playable 3D games on the web. The company is Spline, Inc., and the pages do not give a city or country. It sits in the game-builders group because of that game design capability; most of its pages are about design and interactive 3D, not game logic, so read it as a 3D scene and experience builder first.

What You Build and How

The core is a real-time canvas where you build a 3D scene and give it behavior. The home page lists the pieces: animations to "give life to your 3D projects," easy-to-use materials, "States and Events" for interactivity on desktop and mobile, and a "Live Embed" to put the project into an existing workflow. The solutions page breaks the product into use cases: 3D websites, 3D UI design, 3D animation, 3D data visualization, 3D product design, 3D product configurators, 3D typography, 3D icons, 3D particle effects, 3D fashion and apparel showcases, and physics simulations. The physics page promises "real-time 3D physics simulations without code."

Games have their own line: "3D Game Design: Design and publish playable 3D games for the web." The example library gives a feel for the behavior you can set up without writing code. Its scenes include a mini house with conditional logic, a kids playground and a car camping scene that both use physics, cloner cubes, a component ice cream, and 3D UI components. You duplicate a scene, learn how the look, interaction or composition was done, and change it.

A second product line, Hana, is described as "a web-based, collaborative canvas for interactive interfaces and motion, with an AI agent that creates UI designs and graphics." The same page lists the design tools underneath: an infinite canvas, frames and auto layout, color and strokes, vector networks with booleans, and visual effects such as "shadows, blurs, noise, glass and 3D projections." Interactive 2D design on a real-time canvas is listed as its own solution, so a team can mix flat interface work with 3D in one tool.

AI shows up in 3 places. The solutions page lists AI 3D Generation to "generate 3D objects, scenes, and textures with AI," and "Design with AI Agents" to "design 3D experiences with AI agents and MCP." The product menu also names Spline Mirror and an AI 3D Generation entry. The home page lists agentic editing with AI among the design tools. Pricing counts AI use in credits.

Publishing is aimed at 3 targets. The home page says you can "ship real-time experiences to the Web, iOS and Android," and shows a code sample that imports the Spline Viewer script with a snippet for embedding in a page, next to a Webflow project. The enterprise page quotes a creative director saying the tool is easy enough that even junior designers can "integrate 3D experiences into a Webflow project." The resources menu also links to Docs, a Spline API, Examples, an Academy and a community library.

What the Pages Say About Plans and Results

The pricing page opens with "Start creating realtime 3D design experiences for free. Upgrade for extra features and collaboration with your team." Paid plans are priced per seat. Hobby is $12 per seat per month billed annually or $15 billed monthly, which the page says saves $36 per seat per year. Its feature list adds "Unlimited 3D & 2D files," video upload for 3D files, no watermark on web exports, higher-resolution image exports and a material and audio library. It includes 2,000 monthly credits, with add-ons from 3,000 up to 10,000 monthly credits (for example +$48 a year for 3,000, +$384 a year for 10,000).

Pro is $25 per seat per month billed annually or $30 billed monthly, saving $60 per seat per year. It includes 3,000 monthly credits, and add-ons run from 4,000 up to 20,000 credits (the top step is +$480 a year). A tier above Pro, named Max in the Enterprise comparison, lists 10,000 AI credits per month included, "5x more media gen per week," a 100MB maximum video size and higher MCP tool call limits; the pages held show no Max price. Enterprise is "Custom Pricing, billed annually" with custom AI credits, centralized licensing and billing, multiple teams with team privacy and SAML.

The enterprise page lists "ISO 27001 & SOC 2 Compliance, SAML SSO, Priority Support, Spline Expert Partners." It says Spline holds Type 1 and Type 2 certifications, holds ISO 27001 certification, and "fully complies with GDPR requirements," with all certifications available through its Trust Center by request.

The customers page features stories from Scale AI, Fortra and Luma, each with the features involved: animations, materials, states and events, and live embed. On the home page a founding designer, Zeh Fernandes, says Spline lets his team "create interactive 3D objects that make our product feel tangible." These are company-selected stories. The pages give no total user count.

Who It Suits and Who It Doesn't

Spline suits a design team or agency that needs interactive 3D on a website or product page and wants everyone in the same file at once, as the home page puts it ("your whole team in the file at once"). A freelancer or startup can begin on the free plan and add a seat when a project needs no watermark and more credits. A security-conscious company gets ISO 27001, SOC 2, GDPR and SAML claims on the enterprise page.

It is a weaker match for someone who wants a full game with levels, scoring, saves and multiplayer. The pages describe playable 3D games for the web under design, physics and states and events, not a game-logic framework, so a studio shipping a larger title should check the example library first. Seat pricing and credit tiers also mean cost grows with team size and AI use, and the pages held do not state the free plan's own credit allowance or limits.