TypeSafe steps out of stealth
TypeSafe’s official launch announcement introduces the lab and points builders to Jev. It includes Diogo Almeida’s launch film and original introduction.
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Recent activityA FIELD GUIDE TO JEV / VOL. 01
The best of Jev. Real projects, practical guides and ideas from across the internet.
TypeSafe’s official launch announcement introduces the lab and points builders to Jev. It includes Diogo Almeida’s launch film and original introduction.
TypeSafe highlights Jev’s typed-output approach: applications provide state and questions, then act on probabilities, choices or scores. The linked announcement also covers the Venice API integration.
x.comAnswers your code can useExplore this project ↗TypeSafe announces public access to Jev without a waiting list. The official console is the starting point for trying typed decisions in your own application.
x.comJev opens to everyoneExplore this project ↗Diogo Almeida introduces Jev, TypeSafe’s structured decision model. Watch the launch film and explore the original thread for the model’s approach, examples and author-reported performance.
Four official signals. A fresh starting point on each visit.
50 resources
AI-assisted summaries and translations. Check original sources for context and performance claims.
Shortest path from an API key to a typed decision.

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Choice, Score, and Noul: the three question types and what they return.
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Request and response contract for POST /v1/systemone.
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Official interactive demo of speculative fan-out: many questions in one call, code keeps the relevant answers.
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Speculative fan-out, confidence-gated routing, composite scoring, and intent routing.
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Known failure modes of the current public model, documented by TypeSafe.
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Introduction, primitives, patterns, cookbooks, HTTP API, and SDK references.
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Reproducible recipes: parallel questions, reranking, guardrails, citation checks, extraction, hierarchical classification.
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Official TypeSafe reference: Introduction.
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Official TypeSafe reference: Skill suggestion.

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Official TypeSafe reference: Line-by-line search.
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Official TypeSafe reference: Self-consistency: choices.
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Official TypeSafe reference: AI primer.
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Official TypeSafe reference: JavaScript SDK.
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Official TypeSafe reference: Hierarchical classification.
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Official TypeSafe reference: Example use cases.
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Official TypeSafe reference: Changelog.
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Official TypeSafe reference: TypeSafe Python SDK.
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Official TypeSafe reference: Double-checking citations.
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Official TypeSafe reference: Score.
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Official TypeSafe reference: Speculative fan-out.
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Official TypeSafe reference: API reference.
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Official TypeSafe reference: Classification using confidence.
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Official TypeSafe reference: Autoresearch feature discovery.
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Official TypeSafe reference: Re-ranking.
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Official TypeSafe reference: Agent skill.
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Official TypeSafe reference: Guardrails for LLMs.
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Official TypeSafe reference: Legal.
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Official TypeSafe reference: State.
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Official TypeSafe reference: Noul.
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Official TypeSafe reference: Function calling.
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Official TypeSafe reference: Classifying RAG passages.
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Official TypeSafe reference: Knowledge graph entity alignment.
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Official TypeSafe reference: Date extraction.
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Official TypeSafe reference: Client SDKs.
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Official TypeSafe reference: Intent routing.
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Official TypeSafe reference: Pre-parsed value extraction.
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Official TypeSafe reference: Confidence.
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Official TypeSafe reference: Composite scoring.
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Official TypeSafe reference: Choice.
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Official TypeSafe reference: SDE cascade.
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Official TypeSafe reference: Demos.
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Official TypeSafe reference: System One.
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Official TypeSafe reference: Self-consistency: nouls.
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Official TypeSafe reference: Structure recovery.
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Official TypeSafe reference: Confidence-gated routing.
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Official TypeSafe reference: Advanced: structure.
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Official TypeSafe reference: API reference.
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Official TypeSafe reference: Usage.
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Official TypeSafe reference: How to build with TypeSafe.
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