Spline AI (Alpha)
Spline AI (Alpha) is an AI-powered 3D design tool that generates 3D objects, textures, and scenes from text prompts and images within the Spline platform.
Last verified:
What is Spline AI (Alpha)?
Spline AI (Alpha) is an AI-powered extension of the Spline 3D design platform that lets users create, edit, and enhance 3D scenes using natural language prompts. Spline AI (Alpha) is designed for designers, artists, and developers who want to rapidly prototype 3D assets, interactive web experiences, and immersive environments without deep manual modeling work.
The core of Spline AI (Alpha) includes text-to-3D and image-to-3D generation, letting you turn descriptions or 2D images into 3D meshes directly in the cloud. It also supports AI-generated textures, AI style transfer from 3D scenes into stylized images, and an experimental Spell model that builds full 3D worlds from a single image. Additional capabilities include an AI voice assistant API for conversational 3D experiences.
Spline AI (Alpha) integrates into the existing Spline editor, combining AI generation with Spline's real-time collaboration, animation, interactions, and publishing features.
Spline AI (Alpha) pricing
Pricing model: Freemium
Spline has a free tier for basic 3D design, but most Spline AI features require an active Professional or Team subscription plus an additional Spline AI Add-on subscription. AI 3D Generation, AI Textures, and AI Style Transfer are included in the Spline AI Add-on, which can only be added to Professional or Team plans. Generating 3D assets has associated costs for image previews and mesh generation in addition to the subscription. The AI Voice Assistant API requires a Professional or Team plan and a separate paid OpenAI developer account with its own usage-based pricing.
Spline AI (Alpha) pros
- Text-to-3D and image-to-3D generation in the cloud
- AI-generated textures for common materials and patterns
- AI style transfer to turn 3D scenes into stylized images
- Experimental 3D world generation from a single image (Spell)
- Natural language editing of objects, colors, and properties
- Built directly into Spline’s existing 3D editor workflow
- Real-time collaboration on AI-generated scenes
- Multiple preview options before committing to 3D mesh generation
- No special hardware required; runs in the browser
- Seamless integration with Spline animations and interactions
- AI voice assistant API for conversational 3D experiences
- Fast iteration on design ideas via prompts
- Ability to remix and refine previous AI generations
- Supports both dashboard and editor-based generation
- Helps non-modelers create production-ready 3D assets
Spline AI (Alpha) cons
- Currently in alpha/experimental stage with limited stability
- Requires paid Professional/Team plan plus AI add-on for most features
- AI generations incur additional usage costs beyond subscription
- Limited access; some features need waitlist or subscription gating
- AI-generated geometry may need manual cleanup and optimization
- Texture and mesh quality can vary and may not be production-ready
- Experimental features like Spell are rough and not fully reliable
- AI voice assistant requires separate OpenAI paid developer account
Frequently asked questions about Spline AI (Alpha)
What is Spline AI?
Spline AI is an AI-powered layer on top of Spline that lets you create and edit 3D content using text prompts and images. It includes text-to-3D, image-to-3D, AI textures, AI style transfer, experimental 3D world generation, and voice-assisted interactions, all integrated into the Spline editor and dashboard.
Do I need a paid plan to use Spline AI?
Yes. Most AI features require an active Professional or Team subscription plus the Spline AI Add-on. The free Spline plan does not include AI 3D generation, AI textures, or AI style transfer.
How does text-to-3D work in Spline AI?
You type a text description or upload an image, then Spline AI generates four image previews. You choose the best preview, and the system creates a 3D mesh in the cloud that you can then place and edit in your scene.
Can I generate textures with AI in Spline?
Yes. AI Textures lets you generate seamless textures like grass, concrete, wood, ceramic, and patterns by typing descriptions. You apply them to objects as image materials, and can download or save them as assets. This feature requires a Professional/Team plan plus the AI add-on.
What is AI Style Transfer in Spline?
AI Style Transfer uses your 3D scene as a base to generate stylized 2D images. It’s useful for quick visual explorations or expanding compositions with extra details. Style Transfer is part of the Spline AI Add-on and is accessed from the toolbar’s AI button.
What is Spell in Spline AI?
Spell is an experimental model that creates entire 3D worlds from a single image or text prompt. It generates multi-view-consistent 3D scenes that can be rendered as Gaussian splatting. Spell is limited-access, experimental, and requires a subscription to try.
Do I need a powerful computer to use Spline AI?
No. Spline AI runs in the cloud, so generation and processing happen on Spline’s servers. You only need a browser and internet connection, not specialized GPU hardware.
How do I access Spline AI features?
From the dashboard, you can use the Generate tab to create 3D from text or images. In the editor, you press the AI button on the toolbar to access AI generate, AI textures, and style transfer. Experimental features like Spell are accessed via spell.spline.design.
What is the AI Voice Assistant API in Spline?
The AI Voice Assistant API integrates OpenAI’s Realtime API into Spline experiences, enabling low-latency voice conversations with users. Visitors grant microphone access and can speak to the AI, receiving spoken responses within your 3D scene. It requires a Professional or Team plan and your own OpenAI API key with a paid developer account.
Are there extra costs beyond the subscription for AI features?
Yes. In addition to the Professional/Team plan and AI add-on subscription, generating 3D assets incurs costs for image previews and mesh generation. Usage-based charges apply depending on how many generations and previews you create.