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14,448 startups · 29 programs

Freesolo

Active · Product Native Models

WebsiteYC profile

Why it ranks

How the rank works
8signal of 100 · rising 5
  • went through YCProgram · this site+4
  • team of 4Team size · YC's directory+3.6

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

Competitors

AIReasonBlocksShared: specialized modelYC X26San FranciscoStartup →AIThirdBrain LabsShared: specialized model, knowledgespeedrun SR006San FranciscoStartup →Developer toolsMacrometaShared: lower latencyPlug and PlayUnited StatesStartup →AIKairosShared: reinforcement learning, encode, specializedYC X25San FranciscoStartup →AIDreamscale LabsShared: lower latency, model, userYC F26San FranciscoStartup →
Companies closest to Freesolo
Company
ReasonBlocksShared: specialized modelYC X26ActiveAI
ThirdBrain LabsShared: specialized model, knowledgespeedrun SR006Not statedAI
MacrometaShared: lower latencyPlug and Play Not statedDevtools
KairosShared: reinforcement learning, encode, specializedYC X25ActiveAI, Devtools
Dreamscale LabsShared: lower latency, model, userYC F26ActiveAI, Devtools

Adjacent

AIThetaShared: reinforcement learning, specializedYC X25San FranciscoStartup →AIInactiveSylvianShared: reinforcement learning, specializedYC F25San FranciscoStartup →AIAgentin AIShared: reinforcement learning, modelYC W25San FranciscoStartup →AIUnifyShared: reinforcement learning, modelYC W23LondonStartup →AITraverseShared: reinforcement learning, modelYC W26San FranciscoStartup →
Companies next to Freesolo
Company
ThetaShared: reinforcement learning, specializedYC X25ActiveAI
SylvianShared: reinforcement learning, specializedYC F25InactiveAI
Agentin AIShared: reinforcement learning, modelYC W25ActiveAI
UnifyShared: reinforcement learning, modelYC W23ActiveAI, Devtools
TraverseShared: reinforcement learning, modelYC W26ActiveAI

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

  • Eric MaoFounder/CEO
  • Tom ZhengFounder/CTO

About Freesolo

Freesolo works with companies to encode user-trajectory knowledge into specialized models that outperform the state of the art at much lower latency and cost.

YC batch
X25 · Spring 2025
Status, per YC
Active
Category
AI, Developer tools
Team size
4
Location
San Francisco, CA, USA
Founded
2025
Checked
6h ago

YC tags: Reinforcement Learning, B2B, AI

Freesolo in X25: 144 companies, 90% AI

LinkedIn

Freesolo: questions

Which YC batch was Freesolo in?

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

Is Freesolo still active?

Y Combinator lists Freesolo as active.

Who founded Freesolo?

Freesolo's founders, as listed on its YC page: Eric Mao (Founder/CEO), Tom Zheng (Founder/CTO).

Where is Freesolo based?

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