Feyn
YC X25 · Active · Custom models trained on your data
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 Agnost AIShared: custom model, train, dataActiveAI, Data, Devtools | AI, Data, Devtools | Active | YC +1S26 |
 Unsloth AIShared: custom model, trainingActiveAI, Devtools | AI, Devtools | Active | YCS24 |
 BelvedirShared: custom model, train, dataActiveAI | AI | Active | YCS26 |
 Arcee AInot in a program hereShared: model trainedElsewhereOther | Other | Elsewhere | |
 General Intuitionnot in a program hereShared: model trained, buildingElsewhereOther | Other | Elsewhere |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 DragoneyeShared: ml, model, customActiveAI, Devtools | AI, Devtools | Active | YCW24 |
 The Agentic Data Co.Shared: ml, model, dataActiveAI | AI | Active | YCF26 |
 OrchestraShared: ml, model, trainActiveAI, Devtools | AI, Devtools | Active | YCS26 |
 dari.devShared: custom model, train, runActiveAI, Devtools | AI, Devtools | Active | YCF25 |
 Hebbian RoboticsShared: custom model, data, trainingActiveAI, Data | AI, Data | Active | YCS26 |
Also from X25 in AI
All of X25| Company | Category | Status |
|---|---|---|
 AttuneFaster builds, zero effort.ActiveAI, Devtools | AI, Devtools | Active |
 BlaxelThe infrastructure for autonomous agentsActiveAI, Devtools | AI, Devtools | Active |
 CapacitiveThe data gateway for agents.ActiveAI, Devtools | AI, Devtools | Active |
 CartpoleBuilding reinforcement learning environmentsActiveAI, Data | AI, Data | Active |
 ChironGrammarly for Math ✏️ActiveAI, Devtools | AI, Devtools | Active |
 ClideyTurn scattered data into one platform for decision-makingActiveAI, Devtools | AI, Devtools | Active |
Founders
- Shreyash NigamFounder/CEO
- Bhavnick MinhasFounder/CTO
About Feyn
Feyn is an end-to-end service for building custom models from your data. Our models learn how your product actually works, handle the rare cases that are costly to get wrong, and grow sharper the longer they run. Our engineers start by reviewing your current setup and agreeing on what quality means for your workflow. Then we train a model on your data. Once it ships, new cases feed back into training so the model keeps improving. The result is a model that runs faster, improves with use, and is yours to own.
- YC batch
- X25 · Spring 2025
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 3
- Location
- San Francisco, CA, USA
- Founded
- 2025
- Checked
- 31m ago
YC tags: Artificial Intelligence, Developer Tools, AI, ML
Feyn: questions
Which YC batch was Feyn in?
Feyn was in Y Combinator's Spring 2025 batch (X25).
Is Feyn still active?
Y Combinator lists Feyn as active.
Who founded Feyn?
Feyn's founders, as listed on its YC page: Shreyash Nigam (Founder/CEO), Bhavnick Minhas (Founder/CTO).
Where is Feyn based?
Feyn lists San Francisco, CA, USA as its location on YC's directory.
Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.