Overview
layahost is a hosted API for typed decisions. You send a piece of text and a question with a fixed set of answers - a choice, a yes/no or a score - and get back the answer with a probability for every option, as JSON your code can branch on. It runs Laya, the open-source (Apache-2.0) decision model, in English and multilingual checkpoints, and implements the wire format of the Jev System One API (POST /v1/systemone), so code written for Jev, including the official Python and JavaScript SDKs, works after you change the base URL and the key.
Key Features
- Jev System One API compatible (/v1/systemone, /v1/models)
- Official Jev SDKs work via base URL
- Simpler /v1/decide endpoint with ready-made templates
- Typed answers with probabilities (choice, yes/no, score)
- English and multilingual Laya models
- EU hosting
- Live demo on the home page
Use Cases
- Comment moderation and spam filtering
- Support ticket intent and routing
- Sentiment and priority scoring
- Language detection
- Replacing LLM classification prompts
Getting Started
Try the live demo on https://layahost.com, then point your existing Jev client or the /v1/decide endpoint at layahost with your key.
Pricing & Plans
Flat pricing: $5 per million decisions regardless of text length, prepaid.






