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Startups14,448Programs29

14,448 startups · 29 programs

Belvedir

Active · Autonomous AI Model Training

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

AImlopShared: model training, machine learningYC X25LondonStartup →AIOlam LabsShared: model trainingYC S26San FranciscoStartup →AIEpsilabShared: model training, machine learningYC F26San FranciscoStartup →AIAcquiredTensorPoolShared: model trainingYC W25San FranciscoStartup →AIZavoShared: model trainingYC F25LondonStartup →OtherTogether AIShared: training, modelStartup →
Companies closest to Belvedir
Company
mlopShared: model training, machine learningYC X25ActiveAI, Devtools
Olam LabsShared: model trainingYC S26ActiveAI, Data
EpsilabShared: model training, machine learningYC F26ActiveAI, Data
TensorPoolShared: model trainingYC W25AcquiredAI, Devtools
ZavoShared: model trainingYC F25ActiveAI, Data
Together AInot in a program hereShared: training, modelElsewhereOther

Adjacent

AIInactiveFloydHubShared: machine learning, training, modelYC W17San FranciscoStartup →AIAshrShared: model trainingYC W26San FranciscoStartup →AIAbundantShared: model trainingYC F24San FranciscoStartup →AIActiveloopShared: model trainingYC S18San FranciscoStartup →AISuperb AIShared: model trainingYC W19SeoulStartup →
Companies next to Belvedir
Company
FloydHubShared: machine learning, training, modelYC W17InactiveAI, Devtools
AshrShared: model trainingYC W26ActiveAI, Data
AbundantShared: model trainingYC F24ActiveAI, Devtools
ActiveloopShared: model trainingYC S18ActiveAI, Devtools
Superb AIShared: model trainingYC W19ActiveAI, Devtools

Also from S26 in AI

All of S26
AIAgnost AIWe find where AI agents fail, then train better models to run them.YC S26San FranciscoStartup →AIAutoresearch, Inc.Autoresearch as a service: we solve your hardest measurable problemsYC S26San FranciscoStartup →AICoArenaThe biggest crowdsourced benchmark for Computer-UseYC S26San FranciscoStartup →AIDatoricThe training data R&D engine for physical AIYC S26San FranciscoStartup →AIDeepReach Inc.Network for Physical AI Data BusinessYC S26San FranciscoStartup →AIDreamUsing VLMs to Catch DamageYC S26San FranciscoStartup →
Company
Agnost AIWe find where AI agents fail, then train better models to run them.2 programsteam of 2ActiveAI, Data, Devtools
Autoresearch, Inc.Autoresearch as a service: we solve your hardest measurable problemsteam of 3ActiveAI, Devtools
CoArenaThe biggest crowdsourced benchmark for Computer-Useteam of 2ActiveAI, Data, Devtools
DatoricThe training data R&D engine for physical AIteam of 2ActiveAI, Data
DeepReach Inc.Network for Physical AI Data Businessteam of 6hiringActiveAI
DreamUsing VLMs to Catch Damageteam of 2ActiveAI

Founders

  • Zachary YuFounder/CEO

About Belvedir

YC batch
S26 · Summer 2026
Status, per YC
Active
Category
AI
Team size
2
Location
San Francisco, CA, USA
Founded
2026
Checked
13h ago

YC tags: Machine Learning

Changes seen

One-linerOct 26, 2026

Rewrote its one-liner; it read "The autonomous AI model factory"

Source ↗
TagsOct 19, 2026

No longer tagged Reinforcement Learning and AI.

Source ↗
TagsOct 15, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗
One-linerOct 12, 2026

Rewrote its one-liner; it read "The custom AI model factory"

Source ↗
TagsOct 12, 2026

Newly tagged Artificial Intelligence; no longer tagged AI.

Source ↗
Team sizeOct 8, 2026

Team went from 1 to 2 people.

Source ↗
One-linerOct 8, 2026

Rewrote its one-liner; it read "Your custom AI model factory"

Source ↗
TagsOct 8, 2026

Newly tagged Reinforcement Learning and AI; no longer tagged Artificial Intelligence.

Source ↗
One-linerOct 5, 2026

Rewrote its one-liner; it read "The custom AI model factory."

Source ↗
TagsOct 5, 2026

Newly tagged Artificial Intelligence; no longer tagged AI.

Source ↗

Belvedir in S26: 229 companies, 88% AI

LinkedIn

Belvedir: questions

Which YC batch was Belvedir in?

Belvedir was in Y Combinator's Summer 2026 batch (S26).

Is Belvedir still active?

Y Combinator lists Belvedir as active.

Who founded Belvedir?

Belvedir's founders, as listed on its YC page: Zachary Yu (Founder/CEO).

Where is Belvedir based?

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