assistant-ui
YC W25Open Source React.js Library for AI Chat
San Francisco, CA, USAFounded 20253 employeesassistant-ui.com
Team
3
Founded
2025
About
assistant-ui helps frontend developers add AI chat to their apps. Our product is used by several dozen companies, like LangChain, Stack AI, Browser Use, and Athena Intelligence. We're building an open source Typescript/React library and a backend as a service, with first class integrations into popular agent frameworks like LangGraph and Vercel AI SDK.
Tags
Developer Tools Generative AI Chat Web Development AI Assistant AI / ML
No open roles at this time.
Similar AI / ML startups
a0.dev
We make mobile apps using AI.
Artificial IntelligenceDeveloper ToolsGenerative AI
Open Jobs —
Team 3
Founded 2025
Confident AI
The LLM Eval and Observability Platform for AI Quality
Developer ToolsGenerative AIOpen Source
Open Jobs —
Team 7
Founded 2025
Promptless
An AI teammate that automatically updates your customer-facing docs
Artificial IntelligenceDeveloper ToolsGenerative AI
Open Jobs —
Team 5
Founded 2024
TrainLoop
Reasoning Fine-Tuning
Developer ToolsGenerative AIReinforcement Learning
Open Jobs —
Team 6
Founded 2025