HillStar

Active · Agents to help utilities make better buying decisions.

Why it ranks

9signal of 100 · rising 9

A sum of public facts, not a judgement and not investment advice.

Company	Category	Status
Adalat AIAI OS transforming courts, accelerating justiceteam of 80hiringActiveAI	AI	Active
AxiomatWe make AI that never hallucinates.team of 3ActiveAI, Data	AI, Data	Active
LyonFoundation models on enterprise transaction data.team of 2ActiveAI, Data	AI, Data	Active
ObsessionDBReal-time data warehouse for agentsteam of 5ActiveAI, Data, Devtools	AI, Data, Devtools	Active
OpenLake TechnologiesOpenLake deploys, trains, and serves models that update in real time.team of 2ActiveAI, Data, Devtools	AI, Data, Devtools	Active
ParticularityBuilding the tech stack for government regulatorsteam of 2ActiveAI	AI	Active

Joined a programOct 29, 2026

Joined Y Combinator's Fall 2026 batch (F26).

Which YC batch was HillStar in?

HillStar was in Y Combinator's Fall 2026 batch (F26).

Is HillStar still active?

Y Combinator lists HillStar as active.

Who founded HillStar?

HillStar's founders, as listed on its YC page: Nooshin Behroyan (Founder/CEO), Kenny Stone (Founder/CTO).

Where is HillStar based?

HillStar lists San Francisco, CA, USA as its location on YC's directory.