Jev by TypeSafe: the AI model that refuses to write text ai

Jev by TypeSafe: the AI model that refuses to write text

Jev, TypeSafe's System One model, returns typed decisions with calibrated probabilities in 70-500ms instead of generating text. Here is what the "cannot hallucinate" claim actually guarantees, where it breaks in production, a forty-line Ruby client, and how to test it on your data.

Sep 21, 2026

Getting structured input and output from Ollama ollama

Getting structured input and output from Ollama

Structured output from Ollama takes more than JSON mode. Learn the reliable pattern for a Rails app: shape the input, constrain output with JSON Schema, parse defensively, and retry with feedback so a local LLM survives production instead of just a demo.

May 14, 2026