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Top accelerator startups

Startups14,448 Programs29

14,448 startups · 29 programs

Ollama

Active · Get up and running with large language models.

YC W21

Website YC profile

Why it ranks

How the rank works

32signal of 100 · rising 7

181.7k starsOpen source traction · Repos (repos.fru.dev)+15
trending 2 daysTrending · Trending (trending.fru.dev)+6
on 5 Glyph sourcesSeen across Glyph · the registry (companies.fru.dev)+4
went through YCProgram · this site+4
released Ollama 0.34.4Product launches · Releases (releases.fru.dev)+3

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

Competitors

DarkgradeShared: language, large, modelYC F24DenverStartup →AI

KugelAudioShared: language, model, infrastructureYC X26BerlinStartup →Developer toolsInactive

StackMachineShared: running, large, infrastructureYC S13San FranciscoStartup →AIInactiveAirtrain AIShared: language, large, modelYC S22San FranciscoStartup →AI

Acyclic LabsShared: running, model, infrastructureYC F26LondonStartup →Other

PositronShared: running, modelStartup →Other

Mistral AIShared: language, large, modelStartup →Other

OpenRouterShared: language, large, modelStartup →

Companies closest to Ollama
Company	Category	Status	Program
DarkgradeShared: language, large, modelYC F24ActiveAI, Devtools	AI, Devtools	Active	YCF24
KugelAudioShared: language, model, infrastructureYC X26ActiveAI	AI	Active	YCX26
StackMachineShared: running, large, infrastructureYC S13InactiveDevtools	Devtools	Inactive	YCS13
Airtrain AIShared: language, large, modelYC S22InactiveAI, Devtools	AI, Devtools	Inactive	YCS22
Acyclic LabsShared: running, model, infrastructureYC F26ActiveAI, Devtools	AI, Devtools	Active	YCF26
Positronnot in a program hereShared: running, modelElsewhereOther	Other	Elsewhere
Mistral AInot in a program hereShared: language, large, modelElsewhereOther	Other	Elsewhere
OpenRouternot in a program hereShared: language, large, modelElsewhereOther	Other	Elsewhere

Adjacent

Inception LabsShared: language, large, modelAI Grant Batch 4Startup →AI

FlowbotShared: language, infrastructureYC S19New York CityStartup →AIAcquired

ReplicateShared: model, infrastructureYC W20San FranciscoStartup →AI

TruBuildShared: language, large, modelAntler 2024Saudi ArabiaStartup →Other

Flow AIShared: language, modelSeedcamp 2020Startup →

Companies next to Ollama
Company	Category	Status	Program
Inception LabsShared: language, large, modelAI Grant Batch 4Not statedOther	Other	Not stated	AI GrantBatch 4
FlowbotShared: language, infrastructureYC S19ActiveAI, Devtools	AI, Devtools	Active	YCS19
ReplicateShared: model, infrastructureYC W20 +1AcquiredAI, Devtools	AI, Devtools	Acquired	YC +1W20
TruBuildShared: language, large, modelAntler 2024Not statedAI	AI	Not stated	Antler2024
Flow AIShared: language, modelSeedcamp 2020Not statedOther	Other	Not stated	Seedcamp2020

Also from W21 in AI

authzedAuthorization Infrastructure securing AI at OpenAI, Zoom, & moreYC W21New York CityStartup →AI

OpenCodeThe open source AI coding agentYC W21TorontoStartup →AIInactive

AXAR AIMulti-agent orchestration platformYC W21San FranciscoStartup →AI

ChatwootThe modern, open source, self-hosted AI customer support platformYC W21San FranciscoStartup →AIInactiveCodeballAI-Powered Code ReviewYC W21StockholmStartup →AIAcquired

Emerge ToolsSupercharge your mobile appsYC W21Los AngelesStartup →

Company	Category	Status
authzedAuthorization Infrastructure securing AI at OpenAI, Zoom, & moreteam of 31hiringActiveAI, Data, Devtools	AI, Data, Devtools	Active
OpenCodeThe open source AI coding agentteam of 24ActiveAI, Devtools	AI, Devtools	Active
AXAR AIMulti-agent orchestration platformteam of 40InactiveAI, Devtools	AI, Devtools	Inactive
ChatwootThe modern, open source, self-hosted AI customer support platformteam of 12ActiveAI, Devtools	AI, Devtools	Active
CodeballAI-Powered Code Reviewteam of 3InactiveAI, Devtools	AI, Devtools	Inactive
Emerge ToolsSupercharge your mobile appsteam of 9acquiredAcquiredAI, Devtools	AI, Devtools	Acquired

Founders

Jeffrey MorganFounder
Michael ChiangFounder

About Ollama

YC batch: W21 · Winter 2021
Status, per YC: Active
Category: AI, Developer tools
Location: San Francisco, CA, USA
Checked: 6h ago

YC tags: Developer Tools, Open Source, AI

Changes seen

StageOct 26, 2026

Stage changed from Early to Growth.

StageOct 22, 2026

Stage changed from Growth to Early.

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Ollama in W21: 336 companies, 30% AI

Company profile advisories blogs Funding leaders Paydays problems Releases repos socials standards terms GitHub LinkedIn

Ollama: questions

Which YC batch was Ollama in?

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

Is Ollama still active?

Y Combinator lists Ollama as active.

Who founded Ollama?

Ollama's founders, as listed on its YC page: Jeffrey Morgan (Founder), Michael Chiang (Founder).

Where is Ollama based?

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