Sequen snags $16M to bring TikTok-style personalization tech to any consumer company

Sequen, co-founded by former Etsy AI leader Zoë Weil, raised $16M in Series A to offer real-time personalization and ranking infrastructure—technology previously only accessible to major tech platforms—to large consumer businesses via its RankTune API. The startup uses Large Event Models that generalize live user behavior streams rather than relying on static profiles or cookies, enabling TikTok-level personalization with sub-20ms latency and without requiring user identity.