Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Unsloth AI

Active · Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.

WebsiteYC profile

Why it ranks

How the rank works
13signal of 100 · rising 6
  • team of 12Team size · YC's directory+5.8
  • went through YCProgram · this site+4
  • hiringHiring · Titles (titles.fru.dev), YC+2
  • on 1 Glyph sourceSeen across Glyph · the registry (companies.fru.dev)+1

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

Competitors

AITrainLoopShared: fine tuning, reinforcement learningYC W25San FranciscoStartup →Developer toolsVmaxShared: reinforcement learning, infrastructureSPC 2025San FranciscoStartup →Developer toolsPreference ModelShared: reinforcement learning, infrastructureSPC 2025San FranciscoStartup →AIAutomorphicShared: fine tuning, custom model, infrastructureYC S23San FranciscoStartup →AIZorbeShared: fine tuning, reinforcement learning, modelspeedrun SR007San FranciscoStartup →OtherTogether AIShared: fine tuning, open, sourceStartup →OtherPrime IntellectShared: reinforcement learningStartup →
Companies closest to Unsloth AI
Company
TrainLoopShared: fine tuning, reinforcement learningYC W25ActiveAI, Devtools
VmaxShared: reinforcement learning, infrastructureSPC 2025Not statedDevtools
Preference ModelShared: reinforcement learning, infrastructureSPC 2025Not statedDevtools
AutomorphicShared: fine tuning, custom model, infrastructureYC S23ActiveAI, Devtools
ZorbeShared: fine tuning, reinforcement learning, modelspeedrun SR007Not statedAI, Data
Together AInot in a program hereShared: fine tuning, open, sourceElsewhereOther
Prime Intellectnot in a program hereShared: reinforcement learningElsewhereOther

Adjacent

AIOsmosisShared: reinforcement learning, infrastructure, fineYC W25San FranciscoStartup →AIAcquiredOpenPipeShared: fine tuning, custom model, createYC S23SeattleStartup →AIZibra LabsShared: fine tuning, reinforcement learning, trainingYC X26San FranciscoStartup →AIDatacurveShared: fine tuning, llms, trainingYC W24San FranciscoStartup →AITagflow AIShared: fine tuningAntler 2024IndonesiaStartup →
Companies next to Unsloth AI
Company
OsmosisShared: reinforcement learning, infrastructure, fineYC W25ActiveAI, Devtools
OpenPipeShared: fine tuning, custom model, createYC S23AcquiredAI, Devtools
Zibra LabsShared: fine tuning, reinforcement learning, trainingYC X26ActiveAI, Devtools
DatacurveShared: fine tuning, llms, trainingYC W24ActiveAI
Tagflow AIShared: fine tuningAntler 2024Not statedAI

Also from S24 in AI

All of S24
AIMem0The Memory layer for AI AgentsYC S24San FranciscoStartup →AIcmuxOpen source applied AI lab building next-gen devtoolsYC S24San FranciscoStartup →AIDoublezeroPlatform to build, use, and monetize fully autonomous agentsYC S24RemoteStartup →AIexpand.aiLossless web data.YC S24San FranciscoStartup →AIHyrexThe COLD Task FrameworkYC S24San FranciscoStartup →AIOpslaneAI Code Review tool that runs your appYC S24San FranciscoStartup →
Company
Mem0The Memory layer for AI Agentsteam of 10hiringActiveAI, Devtools
cmuxOpen source applied AI lab building next-gen devtoolsteam of 3hiringActiveAI, Devtools
DoublezeroPlatform to build, use, and monetize fully autonomous agentsteam of 2ActiveAI, Devtools
expand.aiLossless web data.team of 3ActiveAI, Devtools
HyrexThe COLD Task Frameworkteam of 3ActiveAI, Devtools
OpslaneAI Code Review tool that runs your appActiveAI, Devtools

Founders

  • Daniel HanFounder
  • Michael HanFounder

About Unsloth AI

Unsloth helps builders create custom models better & faster using RL and custom kernels. We're developing the all in one solution to help you create highly-accurate custom models 30x faster with 90% less memory use. With over 10 million monthly model downloads and 40K GitHub stars, our mission is to make training and open-source the best it can be!

YC batch
S24 · Summer 2024
Status, per YC
Active
Category
AI, Developer tools
Team size
12
Location
San Francisco, CA, USA
Founded
2023
Checked
6h ago

YC tags: Developer Tools, Generative AI, Open Source, Infrastructure, AI

Unsloth AI in S24: 248 companies, 85% AI

Company profilelabsproblemsReleases GitHub LinkedIn

Unsloth AI: questions

Which YC batch was Unsloth AI in?

Unsloth AI was in Y Combinator's Summer 2024 batch (S24).

Is Unsloth AI still active?

Y Combinator lists Unsloth AI as active.

Who founded Unsloth AI?

Unsloth AI's founders, as listed on its YC page: Daniel Han (Founder), Michael Han (Founder).

Where is Unsloth AI based?

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