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Feyn

AI · US · Early-stage
usefeyn.com
Artificial IntelligenceDeveloper ToolsAIML

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.

Founded
2025
Headquarters
San Francisco, CA, USA
Team size
1–10
Stage
Early-stage
📊 Coliseo ratings
🏆 Overall 1481 Elo
1479
💰 Conviction
Provisional
1485
🔥 Momentum
Provisional
1478
🧲 Talent
Provisional
Total matchups0
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Ratings are live Elo scores from head-to-head crowd votes — opinion, not fact or financial advice. How it works →