Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Per Diem

Active · The AI operating system for restaurants

WebsiteYC profile

Why it ranks

How the rank works
13signal of 100 · rising 3
  • team of 25Team size · YC's directory+7.3
  • went through YCProgram · this site+4
  • hiringHiring · Titles (titles.fru.dev), YC+2

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

Competitors

AICharacterQuiltShared: marketing campaign, system, agentYC X26San FranciscoStartup →Othertreble.aiShared: marketing campaignYC S19São PauloStartup →AIRosetta.aiShared: customer retention, loyalty, order500 Global GA 29TaiwanStartup →OtherInstaAgentShared: marketing campaign, runYC X26San FranciscoStartup →AIGuardin AIShared: automate operationAntler 2025USStartup →
Companies closest to Per Diem
Company
CharacterQuiltShared: marketing campaign, system, agentYC X26ActiveAI
treble.aiShared: marketing campaignYC S19ActiveOther
Rosetta.aiShared: customer retention, loyalty, order500 Global GA 29Not statedAI
InstaAgentShared: marketing campaign, runYC X26 +1ActiveOther
Guardin AIShared: automate operationAntler 2025Not statedAI

Adjacent

AIWoowupShared: customer retention, loyalty, marketing500 Global GA 15ArgentinaStartup →OtherSweplyShared: marketing campaign, manage500 Global MENA 7Saudi ArabiaStartup →OtherMaker.meShared: marketing campaign500 Global 2012United StatesStartup →OtherGameballShared: customer retention, loyalty, marketing500 Global Misk 1EgyptStartup →OtherBasemakerShared: marketing campaign, brandAntler 2023BrazilStartup →
Companies next to Per Diem
Company
WoowupShared: customer retention, loyalty, marketing500 Global GA 15Not statedAI
SweplyShared: marketing campaign, manage500 Global MENA 7Not statedOther
Maker.meShared: marketing campaign500 Global 2012Not statedOther
GameballShared: customer retention, loyalty, marketing500 Global Misk 1Not statedOther
BasemakerShared: marketing campaign, brandAntler 2023Not statedOther

Also from W21 in AI

All of W21
AIClearThe unbiased AI and data layer for skin health.YC W21LondonStartup →AIAbacumThe AI-native FP&A platform that helps Finance teams drive business…YC W21New York CityStartup →AIAlineaAutomated investing for the next generation 💸YC W21New York CityStartup →AIAnimaThe next generation care enablement platformYC W21LondonStartup →AIarnataAI workers for the logistics industry.YC W21San FranciscoStartup →AIAtomic IndustriesSoftware orchestrated mass production of plasticsYC W21ClevelandStartup →
Company
ClearThe unbiased AI and data layer for skin health.team of 2ActiveAI, Data
AbacumThe AI-native FP&A platform that helps Finance teams drive business…team of 125hiringActiveAI
AlineaAutomated investing for the next generation 💸team of 12hiringActiveAI
AnimaThe next generation care enablement platformteam of 20hiringActiveAI
arnataAI workers for the logistics industry.team of 15hiringActiveAI
Atomic IndustriesSoftware orchestrated mass production of plasticsteam of 60hiringActiveAI

About Per Diem

Restaurants today rely on dozens of disconnected tools to manage ordering, loyalty, marketing, and operations. Per Diem replaces that fragmented software stack with AI agents that build and maintain branded apps, run marketing campaigns, manage loyalty, automate operations, and help restaurants grow first-party sales. Built natively on Square, 800+ brands use Per Diem to power more than 500,000 monthly orders as their operating system for commerce, customer retention, and growth.

YC batch
W21 · Winter 2021
Status, per YC
Active
Category
AI
Team size
25
Location
New York City, NY, USA; Remote
Checked
9h ago

YC tags: Payments, Consumer, B2B

Per Diem in W21: 336 companies, 30% AI

Per Diem: questions

Which YC batch was Per Diem in?

Per Diem was in Y Combinator's Winter 2021 batch (W21).

Is Per Diem still active?

Y Combinator lists Per Diem as active.

Where is Per Diem based?

Per Diem lists New York City, NY, USA; Remote as its location on YC's directory.