Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Fern

Active · RL environments for robotics companies

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 7
  • went through YCProgram · this site+4
  • team of 2Team size · YC's directory+2.5

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

Competitors

AIRuntime.siShared: robot policy, robotics, infrastructureYC F26San FranciscoStartup →AIMonteShared: continual learning, infrastructureYC S25San FranciscoStartup →AITwolabsShared: robot policy, robotics, environmentYC X26San FranciscoStartup →AIAutoresearch, Inc.Shared: continual learning, infrastructure, modelYC S26San FranciscoStartup →AIPerfectBit, Inc.Shared: robotics, environment, policyYC X26San FranciscoStartup →
Companies closest to Fern
Company
Runtime.siShared: robot policy, robotics, infrastructureYC F26ActiveAI, Devtools
MonteShared: continual learning, infrastructureYC S25ActiveAI, Devtools
TwolabsShared: robot policy, robotics, environmentYC X26ActiveAI, Devtools
Autoresearch, Inc.Shared: continual learning, infrastructure, modelYC S26ActiveAI, Devtools
PerfectBit, Inc.Shared: robotics, environment, policyYC X26ActiveAI

Adjacent

AIMiruvor AIShared: continual learning, model500 Global SF 37United StatesStartup →AIRellingShared: robotics, infrastructureYC S25San FranciscoStartup →AIHubShared: robotics, infrastructureYC X26San FranciscoStartup →AIProper MotionShared: continual learning, weekspeedrun SR007San FranciscoStartup →OtherOne RobotShared: robot policy, robotics, environmentYC W26San FranciscoStartup →
Companies next to Fern
Company
Miruvor AIShared: continual learning, model500 Global SF 37Not statedAI
RellingShared: robotics, infrastructureYC S25ActiveAI, Devtools
HubShared: robotics, infrastructureYC X26ActiveAI, Data, Devtools
Proper MotionShared: continual learning, weekspeedrun SR007Not statedAI
One RobotShared: robot policy, robotics, environmentYC W26ActiveOther

Also from W26 in Developer tools

All of W26
Developer toolsCascadeDistilling Proprietary IntelligenceYC W26San FranciscoStartup →Developer toolsCrosslayer LabsProtect, monitor and defend your Internet presenceYC W26New York CityStartup →Developer toolsInactiveKlaus AIFast and Safe OpenClaw on the cloudYC W26San FranciscoStartup →Developer toolsREV1Claude Code for Mechanical EngineersYC W26San FranciscoStartup →Developer toolsshortkitMedia infra for consumer appsYC W26Startup →Developer toolsUnifoldMulti-chain deposit and payment infrastructureYC W26New York CityStartup →
Company
CascadeDistilling Proprietary Intelligenceteam of 2ActiveDevtools
Crosslayer LabsProtect, monitor and defend your Internet presenceteam of 3ActiveDevtools
Klaus AIFast and Safe OpenClaw on the cloudteam of 2InactiveDevtools
REV1Claude Code for Mechanical Engineersteam of 2ActiveDevtools
shortkitMedia infra for consumer appsteam of 2hiringActiveDevtools
UnifoldMulti-chain deposit and payment infrastructureteam of 3ActiveDevtools

Founders

  • Amit YadavFounder/CEO
  • Robert XuFounder

About Fern

Fern build high fidelity simulations for robotics, specifically focused on manipulation tasks. Customers have run over 900k simulation rollouts for RL and evaluations, and have verified that the simulation fidelity is high enough such that the real to sim and sim to real gap is very small.

YC batch
W26 · Winter 2026
Status, per YC
Active
Category
Developer tools
Team size
2
Founded
2025
Checked
13h ago

YC tags: Robotics, Infrastructure

Fern in W26: 199 companies, 81% AI

LinkedIn

Fern: questions

Which YC batch was Fern in?

Fern was in Y Combinator's Winter 2026 batch (W26).

Is Fern still active?

Y Combinator lists Fern as active.

Who founded Fern?

Fern's founders, as listed on its YC page: Amit Yadav (Founder/CEO), Robert Xu (Founder).