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14,448 startups · 29 programs

Probe

Active · The Agent-Native Research Stack

WebsiteYC profile

Why it ranks

How the rank works
4signal of 100 · rising 4
  • went through YCProgram · this site+4

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

Competitors

AINessieShared: shared context, research, runYC F25San FranciscoStartup →Developer toolsOpenLegacyShared: ever before, corePlug and PlayUnited StatesStartup →
Companies closest to Probe
Company
NessieShared: shared context, research, runYC F25ActiveAI
OpenLegacyShared: ever before, corePlug and Play Not statedDevtools

Adjacent

OtherLegal Technology, Inc.Shared: research toolPlug and PlayJapanStartup →AIartlabsShared: native, infrastructureAlchemist Class 37Los AngelesStartup →AIInactiveTrident BioscienceShared: ever before, machine learning, testingYC S20San FranciscoStartup →AImlopShared: machine learning, experimentYC X25LondonStartup →OtherBowerShared: experiment, research, labGoogle AI Australia and New Zealand 2026Startup →
Companies next to Probe
Company
Legal Technology, Inc.Shared: research toolPlug and Play Not statedOther
artlabsShared: native, infrastructureAlchemist Class 37Not statedAI
Trident BioscienceShared: ever before, machine learning, testingYC S20InactiveAI
mlopShared: machine learning, experimentYC X25ActiveAI, Devtools
BowerShared: experiment, research, labGoogle AI Australia and New Zealand 2026Not statedOther

Also from X26 in AI

All of X26
AIModernModern automates the entire order-to-cash process for B2B companies.YC X26MelbourneStartup →AIParadev (formerly Superset)Building self-improving softwareYC X26San FranciscoStartup →AIPerfectBit, Inc.RoboticsYC X26San FranciscoStartup →AISuperlogMake software self-healingYC X26ParisStartup →AIUserlensLet agents talk to your customersYC X26San FranciscoStartup →AIAbInitio BioThe Intelligence layer for Drug ManufacturingYC X26BostonStartup →
Company
ModernModern automates the entire order-to-cash process for B2B companies.team of 2ActiveAI
Paradev (formerly Superset)Building self-improving softwareteam of 4hiringActiveAI, Devtools
PerfectBit, Inc.Roboticsteam of 3hiringActiveAI
SuperlogMake software self-healingteam of 2ActiveAI, Devtools
UserlensLet agents talk to your customersteam of 4ActiveAI
AbInitio BioThe Intelligence layer for Drug Manufacturingteam of 2ActiveAI

About Probe

Probe is building the agent-native research stack. Our goal is simple: help AI/ML teams run better experiments, faster. We believe research will drive progress and everyone deserves to have their own personalized lab that iterates faster than ever before. Probe brings core research tools, shared context from past experiments, and visibility into each run together in one platform. Helping teams spend less time setting up infrastructure, supervising agents, catching teammates up and more time testing ideas. Built for helping research labs experiment faster while keeping every researcher and agent aligned, and helping AI/ML teams setup a research capability without building a lab’s infrastructure first.

YC batch
X26 · Spring 2026
Status, per YC
Active
Category
AI, Developer tools
Location
San Francisco, CA, USA
Checked
6h ago

YC tags: Machine Learning, SaaS, B2B, Enterprise Software, AI

Changes seen

Joined a programOct 22, 2026

Joined Y Combinator's Spring 2026 batch (X26).

Source ↗

Probe in X26: 194 companies, 84% AI

Probe: questions

Which YC batch was Probe in?

Probe was in Y Combinator's Spring 2026 batch (X26).

Is Probe still active?

Y Combinator lists Probe as active.

Where is Probe based?

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