{"acquisitions":[],"changes":[{"companyHref":"/c/assistant-ui-com","date":"2026-09-29","documentUrl":"https://github.com/assistant-ui","domain":"assistant-ui.com","fact":"github org","name":"assistant-ui","new":"assistant-ui","old":"unknown","publisher":"GitHub","reason":null,"retrievedAt":"2026-09-29","slug":"assistant-ui-com","status":"sourced","url":"https://whoraisedwhat.com/c/assistant-ui-com"},{"companyHref":"/c/assistant-ui-com","date":"2026-09-29","documentUrl":"https://github.com/assistant-ui","domain":"assistant-ui.com","fact":"github stars","name":"assistant-ui","new":"13856","old":"unknown","publisher":"GitHub","reason":null,"retrievedAt":"2026-09-29","slug":"assistant-ui-com","status":"self-reported","url":"https://whoraisedwhat.com/c/assistant-ui-com"},{"companyHref":"/c/assistant-ui-com","date":"2026-09-29","documentUrl":"https://github.com/assistant-ui","domain":"assistant-ui.com","fact":"provenance:github","name":"assistant-ui","new":{"publisher":"GitHub","status":"sourced","url":"https://github.com/assistant-ui"},"old":{"publisher":null,"status":"unknown","url":null},"publisher":"GitHub","reason":null,"retrievedAt":"2026-09-29","slug":"assistant-ui-com","status":"sourced","url":"https://whoraisedwhat.com/c/assistant-ui-com"},{"companyHref":"/c/assistant-ui-com","date":"2026-09-29","documentUrl":"https://github.com/assistant-ui","domain":"assistant-ui.com","fact":"provenance:githubStars","name":"assistant-ui","new":{"publisher":"GitHub","status":"self-reported","url":"https://github.com/assistant-ui"},"old":{"publisher":null,"status":"unknown","url":null},"publisher":"GitHub","reason":null,"retrievedAt":"2026-09-29","slug":"assistant-ui-com","status":"self-reported","url":"https://whoraisedwhat.com/c/assistant-ui-com"},{"companyHref":"/c/assistant-ui-com","date":"2026-09-24","documentUrl":"https://www.ycombinator.com/companies/assistant-ui","domain":"assistant-ui.com","fact":"provenance:existence","name":"assistant-ui","new":{"publisher":"Y Combinator","status":"sourced","url":"https://www.ycombinator.com/companies/assistant-ui"},"old":{"publisher":"assistant-ui.com","status":"self-reported","url":"https://assistant-ui.com"},"publisher":"Y Combinator","reason":null,"retrievedAt":"2026-09-17","slug":"assistant-ui-com","status":"sourced","url":"https://whoraisedwhat.com/c/assistant-ui-com"}],"country":"US","description":"Open-source React component library for building AI chat interfaces across web, React Native, and terminal apps. Targets developers and teams shipping production chat UI with accessibility and enterprise-grade behavior. Pitched as the design-system layer for AI assistants, freeing teams from reinventing chat UI.","domain":"assistant-ui.com","employees":null,"founded":2024,"fundingTotalQuarantined":false,"githubOrg":"assistant-ui","githubStars":13856,"industry":"unknown","industrySources":[],"investors":[],"lat":37.787936,"lng":-122.40752,"location":"San Francisco, USA","multiples":[],"name":"assistant-ui","people":[{"name":"Simon Farshid","role":"ceo","slug":"simon-farshid"},{"name":"Simon Farshid","role":"founder","slug":"simon-farshid"}],"revenues":[],"rounds":[{"amountQuarantined":false,"amountUsd":1000000,"connectionsAmong":[],"currency":"USD","date":"2025-01-01","investments":[],"investors":[],"leadInvestor":null,"leadInvestors":[],"people":[],"slug":"assistant-ui-com-2025-01-01-seed","source":{"fact":"round","publisher":"yc","retrievedAt":"2026-09-27","status":"attributed","url":null},"status":"attributed","type":"seed","url":null}],"slug":"assistant-ui-com","sources":[{"fact":"round","publisher":"yc","retrievedAt":"2026-09-27","status":"attributed","url":null},{"fact":"existence","publisher":"Y Combinator","retrievedAt":"2026-09-17","status":"sourced","url":"https://www.ycombinator.com/companies/assistant-ui"},{"fact":"description","publisher":"assistant-ui.com","retrievedAt":"2026-09-27","status":"self-reported","url":"https://assistant-ui.com"},{"fact":"github","publisher":"GitHub","retrievedAt":"2026-09-29","status":"sourced","url":"https://github.com/assistant-ui"},{"fact":"githubStars","publisher":"GitHub","retrievedAt":"2026-09-29","status":"self-reported","url":"https://github.com/assistant-ui"}],"stage":"seed","stockCard":{"asOf":"2026-11-09","facts":[],"generatedAt":"2026-11-09","state":"insufficient-evidence","tldr":[]},"techStack":["Cloudflare","Vercel","HeroUI","React","@sentry/browser","posthog-js","Next.js"],"totalRaisedUsd":1000000,"traction":[],"updatedAt":"2026-09-27","valuations":[]}