Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

PerfectBit, Inc.

Active · Robotics

WebsiteYC profile

Why it ranks

How the rank works
9signal of 100 · rising 9
  • went through YCProgram · this site+4
  • team of 3Team size · YC's directory+3.1
  • hiringHiring · Titles (titles.fru.dev), YC+2

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

Competitors

OtherDeployShared: real work, robotics, actuallyYC F26San FranciscoStartup →AIEncordShared: san francisco, robotics, machine learningYC W21LondonStartup →AIRelariShared: robotics, manipulation, trainYC W24San FranciscoStartup →AIRemy AIShared: robotics, manipulation, taskYC W26San FranciscoStartup →AIWaddle LabsShared: robotics, controlYC S26San FranciscoStartup →OtherLlamaIndexShared: san franciscoStartup →
Companies closest to PerfectBit, Inc.
Company
DeployShared: real work, robotics, actuallyYC F26ActiveOther
EncordShared: san francisco, robotics, machine learningYC W21ActiveAI, Devtools
RelariShared: robotics, manipulation, trainYC W24ActiveAI
Remy AIShared: robotics, manipulation, taskYC W26ActiveAI
Waddle LabsShared: robotics, controlYC S26ActiveAI, Devtools
LlamaIndexnot in a program hereShared: san franciscoElsewhereOther

Adjacent

OtherAktoria RoboticsShared: roboticsYC S26San FranciscoStartup →AINextera Robotics | DIDGE.aiShared: roboticsYC S20BostonStartup →AIDarwinShared: robotics, machine learning, taskYC F25San FranciscoStartup →AIRuntime.siShared: robotics, policy, realYC F26San FranciscoStartup →AIDeepAware AI (Robotics Center of Silicon Valley)Shared: robotics, machine learning, environmentYC S25San FranciscoStartup →
Companies next to PerfectBit, Inc.
Company
Aktoria RoboticsShared: roboticsYC S26ActiveOther
Nextera Robotics | DIDGE.aiShared: roboticsYC S20ActiveAI
DarwinShared: robotics, machine learning, taskYC F25ActiveAI
Runtime.siShared: robotics, policy, realYC F26ActiveAI, Devtools
DeepAware AI (Robotics Center of Silicon Valley)Shared: robotics, machine learning, environmentYC S25ActiveAI, Data

Also from X26 in AI

All of X26
AIAdvanced Metal ResearchMachine intelligence for American WeldingYC X26Los AngelesStartup →AIGeneral InstinctDeployment infrastructure for Physical AIYC X26San FranciscoStartup →AIHubReal-world training data for frontier AI labs and robotics.YC X26San FranciscoStartup →AIInLoop RoboticsRobotic arms that pick and pack your orders.YC X26BYStartup →AIProbeThe Agent-Native Research StackYC X26San FranciscoStartup →AIStableBrowseBuilding the Data Infrastructure layer for Physical AI.YC X26San FranciscoStartup →
Company
Advanced Metal ResearchMachine intelligence for American Weldingteam of 3ActiveAI
General InstinctDeployment infrastructure for Physical AIteam of 2ActiveAI
HubReal-world training data for frontier AI labs and robotics.team of 60hiringActiveAI, Data, Devtools
InLoop RoboticsRobotic arms that pick and pack your orders.team of 10hiringActiveAI
ProbeThe Agent-Native Research StackActiveAI, Devtools
StableBrowseBuilding the Data Infrastructure layer for Physical AI.team of 3ActiveAI

Founders

  • Seiji YamamotoFounder
  • Peter VajdaFounder

About PerfectBit, Inc.

PerfectBit builds learned policies for robots that do real work. We train manipulation and control policies that hold up outside the lab, in the unstructured environments where real tasks actually happen. Founded by two alumni of Meta's Superintelligence org: Péter Vajda led Media GenAI foundation-model R&D (Emu, Movie Gen, image and video editing), and Seiji Yamamoto led teams in the Core Llama group across LLM pre-training and post-training, inference optimization, and computer vision. We're early, deliberately quiet about the details, and hiring the first researchers who will shape what this becomes. San Francisco, on-site.

YC batch
X26 · Spring 2026
Status, per YC
Active
Category
AI
Team size
3
Location
San Francisco, CA, USA
Founded
2026
Checked
13h ago

YC tags: Machine Learning, Robotics, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗

PerfectBit, Inc. in X26: 194 companies, 84% AI

LinkedIn

PerfectBit, Inc.: questions

Which YC batch was PerfectBit, Inc. in?

PerfectBit, Inc. was in Y Combinator's Spring 2026 batch (X26).

Is PerfectBit, Inc. still active?

Y Combinator lists PerfectBit, Inc. as active.

Who founded PerfectBit, Inc.?

PerfectBit, Inc.'s founders, as listed on its YC page: Seiji Yamamoto (Founder), Peter Vajda (Founder).

Where is PerfectBit, Inc. based?

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