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AI ideasWhere AI-native companies are being built Trending 2026Rising clusters, new vocabulary Dead ideasGraveyards founders are re-entering StealthHow many are really in stealth

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Idea LabConcepts written from a cluster's data MapSectors, competencies and business forms

Validate

Idea CheckWho is already building it GapsYC requests against what founders build Public MoneyGrants and SBIR for the same space

Right now

Batch LiveThe YC batch as it fills up

Over time

TrendsCluster shares, new terms, diffusion TrajectoryHalf a year of outcomes per company

Directory

CompaniesEvery company, filtered any way OverlapMulti-program companies, serial founders AI VisibilityAEO scores by cluster and batch

ProfileHow the radar understood you TeamsCo-founder profiles merged into one SessionsGroup voting on ideas

Companies/Reactiv

Reactiv

Site unreachable

reactivrehab.com AI readiness report LinkedIn

Techstars TS 2021

Cluster: not yet classified
Listed industry: Digital health,Gaming,Healthtech,Virtual reality / UnitedHealthcare Accelerator Powered by Techstars
HQ: United States
Status: Site unreachable · active per Techstars
Site check: unreachable · 2026-08-17
On the radar since: 2026-08-16

All Techstars companies · cohorts of 2021

All active companies

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