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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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Companies/Citadel AI

Citadel AI

Active, new domain

citadel.co.jp AI readiness report

Techstars TS 2021

How it has moved

new domain
The site moved to citadel-ai.com, same company.

Cluster: not yet classified
Listed industry: Startup City Acceleration Program
HQ: Japan
Status: Active, new domain · active per Techstars
Site check: redirect · 2026-08-17
On the radar since: 2026-08-16

All Techstars companies · cohorts of 2021

All active companies

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