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Startups14,448Programs29

14,448 startups · 29 programs

Neomatter

Active · AI that works for in-house legal teams

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

OtherAcquiredSimpleLegalShared: house counsel, legalYC S13Los AngelesStartup →AILexiShared: house counsel, legal work, systemYC F25San FranciscoStartup →AIAcquiredDioptraShared: house counsel, legalYC W22New York CityStartup →AILegoraShared: legal work, systemYC W24StockholmStartup →AIMoritzShared: legal workYC W26OsloStartup →OtherHarveyShared: house legal, counselStartup →
Companies closest to Neomatter
Company
SimpleLegalShared: house counsel, legalYC S13AcquiredOther
LexiShared: house counsel, legal work, systemYC F25ActiveAI
DioptraShared: house counsel, legalYC W22AcquiredAI
LegoraShared: legal work, systemYC W24ActiveAI
MoritzShared: legal workYC W26ActiveAI
Harveynot in a program hereShared: house legal, counselElsewhereOther

Adjacent

AICemblaShared: legalYC S23San FranciscoStartup →AIRelawShared: legalYC F25Los AngelesStartup →OtherClearlawShared: house legalPlug and PlayUnited StatesStartup →AIHonaShared: legal workYC W23OremStartup →OtherAcquiredClerkyShared: legalYC S11San FranciscoStartup →
Companies next to Neomatter
Company
CemblaShared: legalYC S23ActiveAI
RelawShared: legalYC F25ActiveAI
ClearlawShared: house legalPlug and Play Not statedOther
HonaShared: legal workYC W23ActiveAI
ClerkyShared: legalYC S11AcquiredOther

Also from F26 in AI

All of F26
AIAdalat AIAI OS transforming courts, accelerating justiceYC F26BengaluruStartup →AIPraxisAI agents that run law firm operations.YC F26San FranciscoStartup →AITire SwingAI Compliance for Affordable HousingYC F26New York CityStartup →AIWingman LawAI-native personal injury law firmYC F26San FranciscoStartup →AI0.securityThe autonomous cybersecurity teamYC F26San FranciscoStartup →AIAcyclic LabsAgent swarms that make long-running tasks exponentially fasterYC F26LondonStartup →
Company
Adalat AIAI OS transforming courts, accelerating justiceteam of 80hiringActiveAI
PraxisAI agents that run law firm operations.team of 2ActiveAI
Tire SwingAI Compliance for Affordable Housingteam of 2ActiveAI
Wingman LawAI-native personal injury law firmteam of 2hiringActiveAI
0.securityThe autonomous cybersecurity teamteam of 2ActiveAI, Devtools
Acyclic LabsAgent swarms that make long-running tasks exponentially fasterteam of 2ActiveAI, Devtools

Founders

  • Luke WagnerFounder/CEO
  • Luke MainwaringFounder/CTO

About Neomatter

Neomatter connects to a company’s email, chat, and business systems and does the legal work before it reaches the legal team. It gathers context, applies company policies and past decisions, and presents the completed work to in-house counsel for approval.

YC batch
F26 · Fall 2026
Status, per YC
Active
Category
AI
Team size
2
Location
San Francisco, CA, USA
Founded
2026
Checked
6h ago

YC tags: SaaS, B2B, Legal

Changes seen

NameOct 5, 2026

Renamed from Lightfield.

Source ↗
WebsiteOct 5, 2026

Moved its website from trylightfield.ai to neomatter.com.

Source ↗
Former namesOct 5, 2026

Former name added: Lightfield.

Source ↗
Website linkOct 5, 2026

Website link changed from https://trylightfield.ai to https://neomatter.com.

Source ↗

Neomatter in F26: 219 companies, 89% AI

LinkedIn

Neomatter: questions

Which YC batch was Neomatter in?

Neomatter was in Y Combinator's Fall 2026 batch (F26).

Is Neomatter still active?

Y Combinator lists Neomatter as active.

Who founded Neomatter?

Neomatter's founders, as listed on its YC page: Luke Wagner (Founder/CEO), Luke Mainwaring (Founder/CTO).

Where is Neomatter based?

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