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Moss

Real-time semantic search for Conversational AI

Hiring

About

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 instant, contextual, and adaptive. The experiences that sustain engagement and unlock new kinds of interaction. For our customers, this translates into tangible business value: stronger user retention, higher conversion, and entirely new product categories made possible by real-time understanding. Moss is already powering production pilots across voice AI and developer platforms, achieving sub-10 ms retrieval and 70–90% token savings compared to traditional pipelines.

Topics

Developer ToolsSaaSAIB2B
Location
San Francisco, CA, United States
Team size
5 employees
YC batch
Fall 2025
Status
Active
Stage
Early stage

Open roles · 31

Hiring by function

Sales15
Customer Success6
Engineering3
Product2
Operations1
Finance & Legal1
Data & AI1
People & Recruiting1
Design1

Similar startups & competitors

Questions and answers

What does Moss do?

Real-time semantic search for Conversational AI

Where is Moss based?

San Francisco, CA, United States

How many people work at Moss?

5 employees, according to the company profile.

Has Moss raised money?

There are no funding rounds for Moss in our data.

Is Moss hiring?

Yes: 31 open roles on the company’s job board.

What are the alternatives to Moss?

Similar startups: Daily, NanoNets, and Roboflow.