Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Calltree

Active · Enterprise-grade AI support reps for call centers

WebsiteYC profile

Why it ranks

How the rank works
12signal of 100 · rising 7
  • team of 14Team size · YC's directory+6.1
  • 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

AIGigaShared: support agent, enterpriseYC S23San FranciscoStartup →AIPhonelyShared: call center, support, agentYC S24Startup →AIAcquiredPercept.AIShared: support agent, customer serviceYC S17San FranciscoStartup →AIParahelpShared: support agent, customer serviceYC S24San FranciscoStartup →AISigmaMind AIShared: call center, support, voiceYC S22San FranciscoStartup →
Companies closest to Calltree
Company
GigaShared: support agent, enterpriseYC S23ActiveAI, Devtools
PhonelyShared: call center, support, agentYC S24ActiveAI
Percept.AIShared: support agent, customer serviceYC S17AcquiredAI
ParahelpShared: support agent, customer serviceYC S24ActiveAI
SigmaMind AIShared: call center, support, voiceYC S22ActiveAI

Adjacent

OtherSentient MachinesShared: call centerEF 2016LondonStartup →OtherBirchShared: call centerAI Grant Batch 1Startup →Developer toolsAircallShared: call center, support, voice500 Global GA 14United StatesStartup →Developer toolsTalkdeskShared: call center500 Global GA 3United StatesStartup →AIMosaicVoiceShared: call center, agentYC W22San FranciscoStartup →
Companies next to Calltree
Company
Sentient MachinesShared: call centerEF 2016Not statedOther
BirchShared: call centerAI Grant Batch 1Not statedOther
AircallShared: call center, support, voice500 Global GA 14Not statedDevtools
TalkdeskShared: call center500 Global GA 3Not statedDevtools
MosaicVoiceShared: call center, agentYC W22ActiveAI

Also from W25 in AI

All of W25
AI.WaveInference for real-time AIYC W25ParisStartup →AI10xAI Sales Teams for Dental PracticesYC W25San FranciscoStartup →AIa0.devWe make mobile apps using AI.YC W25San FranciscoStartup →AIA1Zap by A1BaseThe social network layer for AI appsYC W25San FranciscoStartup →AIAdamAI Powered CADYC W25San FranciscoStartup →AIAfterQueryApplied research lab curating data solutions for foundation model…YC W25San FranciscoStartup →
Company
.WaveInference for real-time AIteam of 2ActiveAI, Devtools
10xAI Sales Teams for Dental Practicesteam of 3hiringActiveAI, Data
a0.devWe make mobile apps using AI.team of 3hiringActiveAI, Devtools
A1Zap by A1BaseThe social network layer for AI appsteam of 2ActiveAI, Devtools
AdamAI Powered CADteam of 4hiringActiveAI, Devtools
AfterQueryApplied research lab curating data solutions for foundation model…team of 30hiringActiveAI, Data, Devtools

Founders

  • Kun QianFounder/CEO
  • Robertson TaylorFounder/CRO

About Calltree

Calltree makes enterprise-grade AI support reps for call centers. Our AI reps take voice calls and chats like other AI support agents but can also use internal enterprise tools like a homegrown CRM or internal dashboards, like the highly trained humans working there today.

YC batch
W25 · Winter 2025
Status, per YC
Active
Category
AI
Team size
14
Location
San Francisco, CA, USA
Founded
2025
Checked
6h ago

YC tags: Generative AI, SaaS, B2B, Customer Service, AI

Calltree in W25: 166 companies, 84% AI

LinkedIn

Calltree: questions

Which YC batch was Calltree in?

Calltree was in Y Combinator's Winter 2025 batch (W25).

Is Calltree still active?

Y Combinator lists Calltree as active.

Who founded Calltree?

Calltree's founders, as listed on its YC page: Kun Qian (Founder/CEO), Robertson Taylor (Founder/CRO).

Where is Calltree based?

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