Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Vaero

Active · AI for Human Writing

WebsiteYC profile

Why it ranks

How the rank works
4signal of 100 · rising 1
  • went through YCProgram · this site+4

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

Competitors

AITraverseShared: custom modelYC W26San FranciscoStartup →AIdari.devShared: train custom, custom model, claudeYC F25San FranciscoStartup →AIArzanaShared: train custom, custom model, produceYC X26New York CityStartup →AIFeynShared: custom model, trainYC X25San FranciscoStartup →AIThe Forecasting CompanyShared: foundation modelYC S24ParisStartup →OtherTwelveLabsShared: foundation modelStartup →
Companies closest to Vaero
Company
TraverseShared: custom modelYC W26ActiveAI
dari.devShared: train custom, custom model, claudeYC F25ActiveAI, Devtools
ArzanaShared: train custom, custom model, produceYC X26ActiveAI
FeynShared: custom model, trainYC X25ActiveAI, Devtools
The Forecasting CompanyShared: foundation modelYC S24ActiveAI
TwelveLabsnot in a program hereShared: foundation modelElsewhereOther

Adjacent

AIInactiveCreatorMLShared: foundation model, humanYC W23New York CityStartup →AIPiramidalShared: foundation modelYC W24New York CityStartup →AIOutpost BioShared: foundation modelSeedcamp 2025Startup →AIDeepgramShared: train custom, custom modelYC W16San FranciscoStartup →AIInterfazeShared: claude sonnet, gpt, modelYC X26San FranciscoStartup →
Companies next to Vaero
Company
CreatorMLShared: foundation model, humanYC W23InactiveAI, Data
PiramidalShared: foundation modelYC W24ActiveAI
Outpost BioShared: foundation modelSeedcamp 2025Not statedAI
DeepgramShared: train custom, custom modelYC W16ActiveAI, Devtools
InterfazeShared: claude sonnet, gpt, modelYC X26ActiveAI

Also from W23 in AI

All of W23
AI222the AI social facilitator for offline human to human interactionsYC W23New York CityStartup →AIDecohereReal-time generative AIYC W23SeattleStartup →AIInactiveFetchrThe Personal Shopper in Your PocketYC W23San FranciscoStartup →AIOverlordAI Accountability PartnerYC W23New York CityStartup →AIAcquiredRally TaxAI-native tax platform to save $1T+ for AmericansYC W23San FranciscoStartup →AIShortbreadRead romance comics.YC W23San FranciscoStartup →
Company
222the AI social facilitator for offline human to human interactionsteam of 28hiringActiveAI
DecohereReal-time generative AIteam of 4ActiveAI
FetchrThe Personal Shopper in Your Pocketteam of 4InactiveAI
OverlordAI Accountability Partnerteam of 2ActiveAI
Rally TaxAI-native tax platform to save $1T+ for Americansteam of 5acquiredAcquiredAI
ShortbreadRead romance comics.team of 4ActiveAI

About Vaero

Vaero's AI produces the most human sounding writing in the world. User's input their own writing, and Vaero automatically trains custom models to write exactly like the user. It writes emails, reports, brand content, and anything else. Vaero bolts on to any existing foundation model, such as GPT-4o and Claude Sonnet 3.5, so you can always use the latest model in your writing style.

YC batch
W23 · Winter 2023
Status, per YC
Active
Category
AI
Team size
1
Location
San Francisco, CA, USA
Checked
10h ago

YC tags: SaaS, Consumer, B2B, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗

Vaero in W23: 274 companies, 69% AI

Vaero: questions

Which YC batch was Vaero in?

Vaero was in Y Combinator's Winter 2023 batch (W23).

Is Vaero still active?

Y Combinator lists Vaero as active.

Where is Vaero based?

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