Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Lexius

Active · AI for Corporate Security Cameras

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 7
  • went through YCProgram · this site+4
  • team of 3Team size · YC's directory+3.1

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

Competitors

AIInactiveVisual OneShared: security cameraYC W20San FranciscoStartup →AIAura VisionShared: existing security, security cameraYC W19LondonStartup →AIVoxelShared: existing security, security camera, detectPlug and PlayUnited StatesStartup →AIInactivePrayas AnalyticsShared: existing security, security camera, alreadyYC S15New York CityStartup →AIVizgardShared: security cameraMassChallenge UK 2025United KingdomStartup →
Companies closest to Lexius
Company
Visual OneShared: security cameraYC W20InactiveAI
Aura VisionShared: existing security, security cameraYC W19ActiveAI
VoxelShared: existing security, security camera, detectPlug and Play Not statedAI
Prayas AnalyticsShared: existing security, security camera, alreadyYC S15InactiveAI
VizgardShared: security cameraMassChallenge UK 2025Not statedAI

Adjacent

OthertransloadShared: per site, security camera, 50kYC X26MunichStartup →OtherInactiveBannermanShared: security guard, incidentYC S14San FranciscoStartup →OtherOwlrShared: security camera500 Global GA 19United KingdomStartup →AIVerdunShared: security camera, siteYC F26San FranciscoStartup →AISiteBionicsShared: existing security, security camera, intelligencePlug and PlayUnited StatesStartup →
Companies next to Lexius
Company
transloadShared: per site, security camera, 50kYC X26ActiveOther
BannermanShared: security guard, incidentYC S14InactiveOther
OwlrShared: security camera500 Global GA 19Not statedOther
VerdunShared: security camera, siteYC F26ActiveAI
SiteBionicsShared: existing security, security camera, intelligencePlug and Play Not statedAI

Also from W26 in AI

All of W26
AI/dev/fast/dev/fast is the AI-native code forgeYC W26San FranciscoStartup →AI10x ScienceThe AI-native platform for next-generation protein characterization.YC W26San FranciscoStartup →AI21stUI building blocks for the agentic internetYC W26San FranciscoStartup →AIAemonThe Forward-Deployed AI Research EngineerYC W26San FranciscoStartup →AIAgentic FabriqThe control plane for AI agents.YC W26San FranciscoStartup →AIAlt-XBuilding the best venue for private markets exposure.YC W26Los AngelesStartup →
Company
/dev/fast/dev/fast is the AI-native code forgeteam of 4ActiveAI, Devtools
10x ScienceThe AI-native platform for next-generation protein characterization.team of 5hiringActiveAI
21stUI building blocks for the agentic internetteam of 3ActiveAI, Devtools
AemonThe Forward-Deployed AI Research Engineerteam of 3hiringActiveAI, Devtools
Agentic FabriqThe control plane for AI agents.team of 2ActiveAI
Alt-XBuilding the best venue for private markets exposure.team of 2ActiveAI, Data

Founders

  • David ElskampFounder/CEO
  • Liam WebsterFounder/CTO

About Lexius

Lexius turns existing security cameras into an AI security guard that detects, documents, and alerts incidents like shoplifting and slip-and-falls. Millions of locations already have cameras but no intelligence. Replacing them costs $50K to $100K per site. Lexius upgrades every camera instantly, no rip and replace, no new hardware. Real-world camera systems are messy, fragmented, and decades old, and AI breaks on low-quality CCTV. The hard part isn’t the model, it’s making unreliable systems work at scale with accuracy high enough for real decisions. Lexius starts with security and liability, and becomes the operating system for physical spaces.

YC batch
W26 · Winter 2026
Status, per YC
Active
Category
AI
Team size
3
Location
San Francisco, CA, USA
Founded
2024
Checked
6h ago

Lexius in W26: 199 companies, 81% AI

LinkedIn

Lexius: questions

Which YC batch was Lexius in?

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

Is Lexius still active?

Y Combinator lists Lexius as active.

Who founded Lexius?

Lexius's founders, as listed on its YC page: David Elskamp (Founder/CEO), Liam Webster (Founder/CTO).

Where is Lexius based?

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