Something Else's answer

What makes Else unique is that it lets you prototype and test directly inside your real product codebase rather than on a static mockup or a copy. Because it runs inside your live product with your real data, components, and edge cases, what you test is exactly what your users will see. When the prototype works, Else hands engineering a review-ready PR plus a full backend spec for any new functionality, so engineers don't rebuild from scratch, they review, test, and merge. The result is dramatically faster time to production with PRs that often merge with zero changes.

Spatius's answer:

Spatius combines photorealistic 3D Gaussian Splatting avatars with a cloud-edge rendering architecture built specifically for real-time AI interaction. Instead of rendering every frame on cloud GPUs and streaming it as video, Spatius sends lightweight motion data to the user’s device, where the avatar is rendered locally.

This approach addresses visual quality, network reliability, device coverage, and operating cost at the same time. It allows digital humans to remain responsive during long conversations, work across web, mobile, and intelligent hardware, and scale to high-concurrency production environments.

Something Else's answer

Unlike tools that generate throwaway mockups or standalone apps, Else works on your actual product, so prototypes don't need to be rebuilt before they can ship. It learns from your codebase to inherit your design system and reuse existing components, then produces a PR engineers can review, test, and merge, often with zero changes. It extends your backend without modifying it and exports a full spec plus an integration prompt for new functionality. For product managers, that means going from validated prototype to production PR up to 90% faster, while keeping the product free of bloat from unused features.

Spatius's answer:

Spatius combines photorealistic 3D Gaussian Splatting avatars with a cloud-edge rendering architecture built specifically for real-time AI interaction. Instead of rendering every frame on cloud GPUs and streaming it as video, Spatius sends lightweight motion data to the user’s device, where the avatar is rendered locally.

This approach addresses visual quality, network reliability, device coverage, and operating cost at the same time. It allows digital humans to remain responsive during long conversations, work across web, mobile, and intelligent hardware, and scale to high-concurrency production environments.

Something Else's answer

Else's primary audience is product managers who have validated an idea or built a design but watch it stall in the backlog waiting on engineering. It's aimed at PMs who want to prototype and test real features on their actual product and hand engineering a merge-ready PR, without needing to know how to code. It works much like a vibe coding environment, so some technical understanding helps but isn't required. It's a strong fit for teams shipping client-rendered SPA frontends (React, Angular, Vue, etc.) who want to ship small improvements that are too small for a sprint but too big for a hotfix.

Spatius's answer:

Spatius is built for companies and developers creating AI products that benefit from natural, face-to-face interaction. Its primary users include teams working in AI education, recruiting and interviews, customer service, smart terminals, digital assistants, intelligent devices, and AI companion products.

It is especially well suited to organizations that require long-duration conversations, high concurrency, cross-platform deployment, custom-branded characters, or reliable operation on constrained networks and hardware.

Something Else's answer

Else was created to fix a familiar problem: teams design and validate a change, sometimes even build a Figma prototype everyone loves, and then it lands in the backlog, where it can sit for weeks or months while the customer conversation fades and the details get lost in translation. The core insight is that static mockups lie because they lack your real data, components, and edge cases. So Else was built to let teams prototype on the real product and hand engineering a review-ready PR instead of a brief, turning "review, test, merge" into the only remaining step. Else is backed by a16z Speedrun.

Spatius's answer:

Spatius was created to close the gap between digital human demonstrations and real-world deployment. Many avatar technologies can produce an impressive short demo, but become difficult or expensive to operate when conversations last longer, user numbers grow, or products must run across diverse devices and network environments.

The Spatius team developed its own cloud-edge 3DGS technology to solve these production challenges together. Today, Spatius helps companies turn AI into a more natural and expressive presence, bringing real-time digital humans into education, recruiting, smart devices, customer-facing terminals, and companion applications.

Spatius's answer:

Spatius is primarily built on proprietary 3D Gaussian Splatting technology and a cloud-edge rendering architecture.

Its cloud-based Motion Server converts generated speech into lightweight facial and motion data, while the AvatarKit SDK renders and animates the 3DGS character locally on the client device. Platform technologies include WebGL and WebGPU for web applications, Metal for iOS, and Vulkan for Android. Spatius can receive real-time audio through technologies such as WebSocket, WebRTC, LiveKit, and Agora, and can integrate with third-party ASR, LLM, and TTS providers.

Spatius's answer:

TAL Education is one of Spatius’s leading customers. Spatius also works with established companies across education, recruiting, smart devices, and AI companion products.

Products powered by Spatius have reached millions of end users and supported tens of millions of digital human conversations, demonstrating the platform’s ability to operate in long-term, large-scale production environments.