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14,448 startups · 29 programs

Theta

Active · Specialized AI for Every Job

WebsiteYC profile

Why it ranks

How the rank works
9signal of 100 · rising 6
  • team of 7Team size · YC's directory+4.7
  • went through YCProgram · this site+4

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

Competitors

OtherSmallest.aiShared: specializedStartup →
Companies closest to Theta
Company
Smallest.ainot in a program hereShared: specializedElsewhereOther

Adjacent

AIInactiveSylvianShared: reinforcement learning, specializedYC F25San FranciscoStartup →AIMatXShared: specializedAI Grant Batch 2Startup →AIFreesoloShared: reinforcement learning, specializedYC X25San FranciscoStartup →AIKairosShared: reinforcement learning, specializedYC X25San FranciscoStartup →AIDeepModelShared: specializedAntler 2024USStartup →
Companies next to Theta
Company
SylvianShared: reinforcement learning, specializedYC F25InactiveAI
MatXShared: specializedAI Grant Batch 2Not statedAI
FreesoloShared: reinforcement learning, specializedYC X25ActiveAI, Devtools
KairosShared: reinforcement learning, specializedYC X25ActiveAI, Devtools
DeepModelShared: specializedAntler 2024Not statedAI

Also from X25 in AI

All of X25
AIAviroEnvironments for Long Horizon WorkYC X25San FranciscoStartup →AICartpoleBuilding reinforcement learning environmentsYC X25San FranciscoStartup →AIAcoliteAI Native Commercial Insurance BrokerYC X25PhiladelphiaStartup →AIAdentrisReal-time AI Compliance & Revenue Integrity for Medical ProvidersYC X25San FranciscoStartup →AIAegisAI Agents to win denied health insurance claims.YC X25San FranciscoStartup →AIAirweaveThe open-source context retrieval layer for agentsYC X25San FranciscoStartup →
Company
AviroEnvironments for Long Horizon Workteam of 2ActiveAI
CartpoleBuilding reinforcement learning environmentsteam of 2ActiveAI, Data
AcoliteAI Native Commercial Insurance Brokerteam of 3ActiveAI
AdentrisReal-time AI Compliance & Revenue Integrity for Medical Providersteam of 5hiringActiveAI
AegisAI Agents to win denied health insurance claims.team of 3ActiveAI
AirweaveThe open-source context retrieval layer for agentsteam of 7hiringActiveAI, Devtools

Founders

  • Rayan GargFounder/CEO
  • Tanmay SharmaFounder/CPO
  • Gurvir SinghFounder/CTO

About Theta

YC batch
X25 · Spring 2025
Status, per YC
Active
Category
AI
Team size
7
Location
San Francisco, CA, USA
Founded
2025
Checked
10h ago

YC tags: Reinforcement Learning, B2B, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗

Theta in X25: 144 companies, 90% AI

LinkedIn

Theta: questions

Which YC batch was Theta in?

Theta was in Y Combinator's Spring 2025 batch (X25).

Is Theta still active?

Y Combinator lists Theta as active.

Who founded Theta?

Theta's founders, as listed on its YC page: Rayan Garg (Founder/CEO), Tanmay Sharma (Founder/CPO), Gurvir Singh (Founder/CTO).

Where is Theta based?

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