TL;DR: Moss is a Y Combinator Fall 2025 startup Real-time semantic search for Conversational AI, currently active with a team of 5.
Real-time semantic search for Conversational AI
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Moss is building the real-time semantic search runtime for conversational and multimodal AI. Our system enables voice agents, copilots, and chat interfaces to retrieve, reason, and respond in sub-10 ms, delivering the responsiveness that makes AI interactions feel truly natural. If you’ve ever built a conversational or voice AI product, you’ve felt the lag. That moment when an agent pauses and the illusion of intelligence breaks. The bottleneck is almost always retrieval. Each query hops across networks and databases, adding delay and cost. Moss eliminates that gap by keeping retrieval close to where the agent runs. Moss runs natively across browsers, mobile devices, and servers with an optimized vector index built in Rust and WebAssembly. It enables teams to build AI products that feel i…
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Yes. Moss was funded by Y Combinator in the Fall 2025 batch. Real-time semantic search for Conversational AI
Moss is building the real-time semantic search runtime for conversational and multimodal AI. Our system enables voice agents, copilots, and chat interfaces to retrieve, reason, and respond in sub-10 ms, delivering the responsiveness that makes AI interactions feel truly natural. If you’ve ever built a conversational o…
Moss was part of Y Combinator's Fall 2025 batch.
Moss has a team of 5 people according to Y Combinator's directory.
Moss is currently listed as Active with a team of 5 in Y Combinator's directory.
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