You want to design, not pick
Spline gives you the whole scene: geometry, materials, lights, camera, interaction. Halcyone Maker gives you choices inside a character system. If your idea does not fit it, Spline will let you build it.
Comparison
Spline is a 3D design tool: you build the scene. Halcyone Maker is a character factory: the character and its motion are already made. Which one you want depends on how much you want to design.
Spline is a real design tool: canvas, materials, lighting, an event system for interactivity, real-time collaboration, and export paths that include GLTF, USDZ and STL, code exports, web and native embeds, plus video export where you set duration, frame rate and resolution. If you want to design a 3D scene, it is a serious answer.
Halcyone Maker is not a design tool and does not want to be. It is a generator: roll a cute mascot, choose a ready-made motion, frame it, record. There is no canvas to learn and no animation to author, because it was authored in advance against a rig every character shares.
A browser-based 3D design and collaboration tool for building interactive 3D scenes and shipping them to the web, apps and native platforms.
| Halcyone Maker | Spline | |
|---|---|---|
| What it is | A browser character maker for cute 3D mascots that already move. | A browser-based 3D design tool for interactive scenes, with real-time collaboration. |
| Runs in | The browser. No install, no account to start. | The browser, with desktop and embed options. |
| Character style | Cute stylized mascots and animals, built from parts on one shared rig. | Whatever you model or import — Spline is style-agnostic, not a character system. |
| Animation included | Yes. Hundreds of ready-made motions, chosen from a list rather than authored. | It has animation tools — states, transitions and an event system — but you author the animation yourself. No character motion library is documented. |
| Rigged export | Yes. GLB with the skeleton and animation baked in. | Not documented. Scene export is documented as GLTF, USDZ and STL, plus code exports and embeds; character rigging is not part of the product. |
| Video export with alpha | Yes. Transparent WebM plus greenback, framed 16:9, 1:1 or 9:16. | Video export is documented with a duration, FPS and resolution; alpha channel support is not documented. |
| Free tier | Build, preview and take one export with no account. A free account adds 3 saves and unlimited basic PNG/GIF/WebM/GLB exports. | Yes — a free plan at $0. |
| Paid from | $12/mo Plus; $29/mo Pro. | $12/mo (Hobby, billed annually; $15 billed monthly). |
| Best for | A recurring mascot for videos, streams, apps and prototypes. | Designing interactive 3D scenes, hero sections and product visuals for the web. |
Competitor details checked on 2026-09-02; verify on their site. Anything we could not confirm on an official page is marked "Not documented" rather than guessed.
If one of these describes your project, use Spline.
Spline gives you the whole scene: geometry, materials, lights, camera, interaction. Halcyone Maker gives you choices inside a character system. If your idea does not fit it, Spline will let you build it.
Their event system, embeds and code exports are built for scenes people click and drag on a live page. Halcyone Maker outputs a file, not a scene.
Products, abstract shapes, environments, 3D typography. Halcyone Maker has one subject and Spline has none, which here is the advantage.
Spline is best for:
One subject, one rig, motion authored against it in advance — which is why the character never breaks.
Character animation is the expensive part of any 3D scene, and a design tool still expects you to do it. Here you choose a motion and it plays correctly on any character, because every motion was authored against the one shared rig.
Roll a mascot, tune the face and colours, pick a performance, record. No learning curve before the first usable output.
Transparent WebM and greenback recording, framed 16:9, 1:1 or 9:16, drops straight onto a video, a slide or an OBS scene.
If any of these is a requirement, this is the wrong tool for the job.
Closest fit on our side: A mascot for onboarding, empty states & more. — or watch a character perform on the showcase.
Only for the character. If your job is a moving mascot, Halcyone Maker gets you there far faster. If it is designing a 3D scene or an interactive web experience, Spline is the right tool.
Spline has animation tools and an event system so objects can move, but no character motion library is documented and rigging is not part of the product. You author the movement yourself.
Export a GLB and import it like any other model. Verify animation support for imported files in Spline's own documentation before relying on it.
Close — Halcyone Maker Plus is $12/mo and Spline's Hobby plan is listed at $12/mo billed annually. Both have a free tier, so the real question is which does the job you have.
Building, previewing and your first export need no account. A free account gives 3 saves and unlimited basic PNG, GIF, WebM and GLB exports. Plus is $12/mo (voice recording, AI looks, GLB Studio); Pro is $29/mo.
Each is a separate, fact-checked comparison.
A generative 3D toolbox that turns a text prompt or an image into a 3D model, textures it, and can auto-rig and animate the result.
Generative text/image to 3D toolA generative 3D workspace that produces models from text, a single image or multiple views, with auto-rigging, animation retargeting and part segmentation on top.
Cross-app avatar platformA cross-game avatar platform: players build a personal humanoid avatar in a browser creator, from a selfie or a preset, and developers embed it through SDKs for Unity, Unreal and the web.
2D animated video makerA browser-based 2D animated video platform with a character builder, thousands of templates, a large stock library, AI voiceover and subtitles, producing finished video.
Building, previewing and your first export need no account. A free account makes basic exports unlimited.