Jev directory
Jev Guides & Articles
270 curated Jev entries. Documentation, write-ups, and community hubs for learning Jev, from the canonical docs to independent tutorials and reviews.
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270- Docs35
- Repos & sites43
- Posts60
- Articles132
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A use-case directory of 838 Jev builds across 21 use cases where each entry links to its source and shows the cost and speed its author reported, with category filters and free tools.
Jev Guides & ArticlesArticle#community#directory#use-cases
Community
A community directory of 899 Jev projects refreshed daily from GitHub, with 814 repos plus live sites, articles, and threads, star counts, category filters, a jev-latest spec sheet, and a top-starred list.
Jev Guides & ArticlesArticle#community#directory#awesome-list
Community
A browsable atlas of 1,018 AI papers from August 2025 to August 2026, sorted into 24 topic collections with labs, citations, and code links, plus a reproducible cost benchmark for summarizing 1,000 papers.
Jev Guides & ArticlesArticle#community#directory#benchmarks
Community
Wikipedia's article on Jev: TypeSafe AI, the September 15, 2026 early-access release of jev-1.13.0, the Choice, Score, and Noul primitives, RLCD training, and the unpublished weights and technical paper.
Jev Guides & ArticlesArticle#community#article#models
Community
The Register's launch report on TypeSafe AI's Jev: the $40 million raise, typed probabilistic decisions, the Doom demo, the 70-500 ms latency and $0.042/MTok pricing claims, and the structured-output caveat.
Jev Guides & ArticlesArticle#community#article#press
Community
Tom's Hardware's launch report on Jev, covering how the API takes program state and typed statements and returns yes/no answers, choices, or probability distributions with confidence values.
Jev Guides & ArticlesArticle#community#article#api
Community
Latent Space's AINews roundup of launch day: the Jev thread atop Hacker News, the RLCD decision-model framing, and community readings that compare it to DSPy-style typed signatures for routing and scoring.
Jev Guides & ArticlesArticle#community#article#models
Community
The Hacker News launch thread for Jev, with the CEO agreeing the shape is a zero-shot classifier and commenters mapping it to encoders, constrained decoding, and typed classification.
Jev Guides & ArticlesPost#community#models#evaluation
Community
News analysis arguing Jev's refusal to generate text is the feature, covering the $40M seed, the OpenAI-veteran founding team, and what structured, thresholdable decisions mean for agent pipelines.
Jev Guides & ArticlesArticle#community#article#models
Community
DataCamp's explainer walks the eval tables behind System One models, from 67.8% workflow accuracy and 0% structured-output errors to the $0.042 per million token price and how to call the API.
Jev Guides & ArticlesArticle#community#article#evaluation
Community
One of the most-shared plain-language explainers of the launch: Jev as AI multiple choice rather than AI essay writing, and why that framing clicked for builders.
Jev Guides & ArticlesPost#community#x#explainer
Community
A practitioner's field notes on the six Jev uses he still expects to rely on after 60 days, including which early experiments did not stick.
Jev Guides & ArticlesPost#community#x#use-cases
Community
A Chinese-language roundup of open System One efforts including Laya 421M, Decider-2B, NanoJev 0.6B, Reflex, and System-One 4B, with parameter counts.
Jev Guides & ArticlesPost#community#x#open-models
Community
An observation on where launch-week discussion landed: only three Jev posts on Reddit while X filled up with demos, threads, and measured runs.
Jev Guides & ArticlesPost#community#x
Community
The raw HTTP contract behind every SDK: POST a state plus typed noul, choice, and score questions to /v1/systemone, and get one answer per question, with error codes and retry guidance.
Jev Guides & ArticlesDocs#official#docs#api
Official
The model card for jev-1.13.0: $42 per billion input tokens with free output, a 64k context, 250k tokens per second, and how to list the models your account can call.
Jev Guides & ArticlesDocs#official#docs#models
Official
The idea behind Jev: models that return typed decisions and probabilities instead of generated text, named after Kahneman's fast-thinking System 1, with confidence to route around uncertainty.
Jev Guides & ArticlesDocs#official#docs#architecture
Official
Why TypeSafe trains decision models with RLCD instead of RLHF: calibrated probabilities where 0.2 outcomes happen about 20% of the time, and the case for machine-to-machine automation.
Jev Guides & ArticlesDocs#official#docs#evaluation
Official
TypeSafe AI's official launch post: the company is out of stealth and developers can get access to Jev from the website, alongside the founder's launch thread.
Jev Guides & ArticlesPost#official#x#launch
Official
A Python walkthrough of typesafe-sdk: sync and async clients, grouping answers into choices, scores, and nouls, and routing uncertain cases to review, with arithmetic kept in Python.
Jev Guides & ArticlesArticle#community#tutorial#python
Community
A practical guide through SDK setup, the three primitives, and five patterns including speculative fan-out, confidence-gated routing, composite scoring, and a retrieval-then-judge cascade.
Jev Guides & ArticlesArticle#community#tutorial#python
Community
A plain-English guide to Choice, Score, and Noul with Python and curl examples, confidence-gated branching for support, moderation, and fintech, plus a skeptical read of the benchmarks.
Jev Guides & ArticlesArticle#community#guide#python
Community
A hype-free framing of Jev: not a replacement for GPT or Claude, but a new tool class for fast, cheap structured decisions, like 2016-era classifiers with 2026-level intelligence.
Jev Guides & ArticlesPost#community#x#explainer
Community
A curated thread of the strongest Jev community projects found on X within the first days of launch, from the creator behind the Jev voice browser and a full video tutorial.
Jev Guides & ArticlesPost#community#x#roundup
Community
End-to-end guide to a ticket-routing workflow with confidence thresholds, zero-data-retention options, and mock-based tests that need no network call.
Jev Guides & ArticlesArticle#community#vercel#tutorial
Community
A practical tour with JavaScript examples: typed choices, scores, probabilities, real latencies and costs, the jagged edges, and how to split jobs correctly.
Jev Guides & ArticlesArticle#community#tutorial#javascript
Community
Give Jev a screen snapshot and a task, and it chooses the next action for agent-driven mobile QA. Ships as a CLI you can point at a real app.
Jev Guides & ArticlesArticle#community#mobile#qa
Community
The launch story: why TypeSafe built decision models, the side-by-side demo, the Doom and Wikiracing bots, and the published workflow evals.
Jev Guides & ArticlesArticle#official#announcement#benchmarks
Official
The canonical introduction: Jev is TypeSafe's flagship model and the first System One model. Send state and typed questions, get structured answers your code can use directly.
Jev Guides & ArticlesDocs#docs#official#primitives
Official
Everything you need to make your first request: install an SDK, get an API key, and send state plus typed questions.
Jev Guides & ArticlesDocs#docs#official#quickstart
Official
Index of all 270 entries
- High-Speed Decision Pipelines: Jev and Prefill-Only Inference from Scratch
- Welcome to Jev
- Jev Hub — shiiivvaam
- Jev Workshop
- Awesome Jev · jev.info
- Jev TypeSafe AI Tutorial
- HiddenLayer: Jevil in the details - System One model security
- HiddenLayer: Jev Talking - security of decision models
- Pillar Security: the agent with no LLM inside
- Rogue Security: what Jev means for agentic security
- ThinkThen: why people are excited about Jev
- Contextually Aware: Jev - the witchcraft is that it stops talking
- BIG CHANGE: Jev and AI decisions inside everyday software
- VentureBeat: paying LLMs to write text for decisions needing labels
- VentureBeat: prompt injection can sway Jev's agent verdicts
- Vega: Jev gate closed up to a third of triage alerts
- TWIML #779: Diogo Almeida on Jev and machine-native AI
- MAD Podcast: Diogo Almeida on AI that's 95% Einstein, 5% Mr. Bean
- Exa: Law://WhatsNext tests Jev on legal contract review
- Progressive Robot: TypeSafe's $7.5B valuation, by the numbers
- Braintrust docs: Trace Jev and use it as an LLM judge
- Langfuse docs: Jev as a decision-model evaluator
- Langfuse: OpenTelemetry tracing for TypeSafe Jev
- Blackwell Systems: adversarial diligence on Jev's decision layer
- JevResearch: Jev is not frontier, but still worth your attention
- LessWrong: testing Jev as a trusted monitor for AI control
- Vilinski: decision models compared on accuracy, cost and speed
- ThursdAI: Jev's System 1 launch, with Allie Laabs
- The Merge: Jev as intelligence-infused if-statements
- How I AI: 8 real use cases for Jev
- Jev News evals desk: every published Jev measurement
- Jev News compare: Jev vs Laya, Luna and the rest
- System One: An Interactive Guide
- Jev Ecosystem
- Awesome System One Models
- Getting started with Discriminative (Jev/DiffusionGemma) models
- Awesome Clef
- System One (animated course)
- Jev × Laya Research Notes
- system-one (babybear-labs)
- SystemOne Blueprint
- Jev Decision Models Course (Korean)
- Jev — notes on fast small decisions
- Jev 決策模型實戰 (porter-ai-studio)
- systemone.dev Community Hub
- OpenDecision — deepanwadhwa.github.io
- Jev: For the Builders AND Dreamers (Jev 1.14)
- What Is Jev? TypeSafe's System One AI Model Explained
- Decision Models: The Fast Layer for AI Agents
- Two-Tier AI Agents: Why You Need Two Models
- System One API on DeepInfra
- How I Stopped Misclassifying Jobs with Jev
- What Is Jev AI? A Practical Getting-Started Guide
- LLMs Generate. Jev Decides. Inside a Java Invoice App
- What Is Jev? The 2026 Complete Guide
- Jev as a System One Model: Latent Space Interview Notes
- Jev Explained: RLCD Internals and Local Runners
- Jev Usage Walkthrough: API, SDK, and jev-review
- Jev Complete Guide: API Keys and Confidence Routing
- Jev as an Elasticsearch Search Reranker
- What Jev's Zero-Hallucination Claim Really Means
- Jev on BigQuery via Cloud Run
- I Tested Jev on Entity Resolution
- TypeSafe AI on Crunchbase
- Jev AI Model on Crunchbase
- Jev Day 2026
- Jev 1.14 Rollout Notes
- Jev Wiki — jevwiki.ai
- Jev Wiki Consult Guide
- Jev Agent Integration Playbook
- Jev News
- Find the Jev-Shaped Problems in Your Software
- OpenAI Decisions API Docs
- Awesome Open System One
- Jev + Herdr: Practical AI Agent Orchestration
- Jev Projects
- Mastering TypeSafe Jev
- A Jev gate belongs in a hook, not MCP
- Jevfast
- Building a Harness with Jev
- Laya.tools
- Build your own decision model
- Ollaya Documentation
- TypeSafe for Enterprise
- Contact TypeSafe
- Accessibility Statement
- TypeSafe Thoughts Blog
- TypeSafe A raises Series AI
- How Jack & Jill Cut Candidate Screening Costs By 88% With Jev
- Jev on Product Hunt
- Jev for QA
- TypeSafe Jev practical guide
- Jevidence
- Understanding Jev
- The 16 Jev Design Patterns
- TypeSafe Jev AI: System One Model Guide
- Jev Is Open, No Waitlist
- Signups Still Closed
- Signups Reopened
- New Signups Lose the Free Credit
- TypeSafe Team
- Lies, Damned Lies, and Benchmarks
- Terms of Use
- Master Customer Agreement
- Privacy Policy
- Acceptable Use Policy
- Data Processing Addendum
- Awesome Decision Models
- What TypeSafe got right with the Jev launch
- System One models for prod, not god
- CUA-S1 on Hacker News
- Von on Hacker News
- Ask HN: what is Noul
- LocalLLaMA: Jev as a classifier
- LocalLLaMA asks mods to curb Jev ads
- InfoQ: Jev returns typed probabilities
- Real Python: Jev in Python
- DataCamp: a typed ticket router
- OpenRouter: what Jev returns
- Vercel: Jev for Python engineers
- Jev In The Wild
- Jev-trading
- Jevsome Projects
- Jev Cookbook — datawhalechina
- Jev Hub — mizzlelover
- Jev Directory
- Fable Jev
- Jevusecases
- Documentation
- Parallel Constrained Decoding (Qwen2.5-1B-RLCD)
- Computer use built on Jev
- Jev Typewriter launch
- Jev vs Qwen on Cerebras
- Hide posts on X with natural language
- agentgateway Jev guardrail example
- Jev Classifier — jevclassifier.vercel.app
- Dmx.to
- Model router CLI
- Support ticket classifier
- ConsoleChaosRacing driven by Jev
- skillbox + Jev skill routing
- jev-rabbit PR review bot
- TrainLCD Jev rerank
- StarCraft Brood War WASM MCP demo
- Spanish AEPD corpus test
- Tabletop MMORPG action mapper
- Jev in 34 seconds
- Wiki-link clicker demo
- Verdict (Open-jev) launch thread
- Search with Jev and Milvus
- Best Jev Projects (jevbest.com)
- Jev wiki — jevai.wiki
- Show HN: Decide – Jev decisions in the shell
- Show HN: onesie – pipeable CLI for System One models
- Show HN: Jev as the Bletchley Park Analyst
- Show HN: Worklaude – learn by speaking
- Calibrating Jev as a Code Reviewer
- TypeSafe's Jev Can't See. I Made It Guess What I Drew Anyway — news.ycombinator.com
- Show HN: Jev, Fly Me to the Moon
- Awesome TypeSafe
- OpenAI answers TypeSafe's Jev with a Decision API built on Luna — thenewstack.io
- OpenAI Answers TypeSafe's Jev with a Decision API Built on Luna — news.ycombinator.com
- Typesafe's Jev is the fish at the poker table
- Show HN: Jev-CLI – CLI wrapper for JEV typesafe AI model
- What Is Jev? Inside TypeSafe's Decision-Only AI Model
- A deep dive into Jev, TypeSafe's System One model
- OpenAI's Jev clone could help the frontier lab stop its swarming agents
- TypeSafe Jev explained
- Jev by TypeSafe AI
- Jev model explained
- What is Jev?
- Jev on AI Gateway
- Jev vs Kev on Opper
- Local Laya vs hosted Jev
- I built non-autoregressive decision models with RL a year ago
- Jevify skill
- I was impressed by Jev, please explain why I shouldn't be
- How to build a Jev-style classifier with DiffusionGemma
- Minecraft PvP against DiffusionGemma-as-Jev
- Detecting compromised AI coding agents with Jev and Gryph
- Jev vs Kev tested side by side
- Jev and System One Models: Calibration Beats Accuracy
- Does an open-weight decision model beat a hosted one?
- Jevgpt — news.ycombinator.com
- We tested Jev on 100 real agent tool calls
- I turned Jev into a (lousy) chatbot
- Using Jev for evals in Datadog
- Jev vs. GPT-6 Astra
- Typed judgments or agentic loops?
- Jev introduces a new shape of LLM
- Jev can't be calibrated — alexmolas.com
- A Jev-like wrapper for LLMs
- GLM-5.3-Flash as a decision model
- Detecting compromised coding agents with Jev
- Seven practical Jev use cases
- Teaching a decision model to cook
- Show HN: Jev Plays Pokémon Red
- A Jev-like wrapper for LLMs, including vision
- Turning GLM-5.3-Flash into a Jev-like model
- Jev can't be calibrated — news.ycombinator.com
- Jev vs Claude Opus 5 on Banking77
- Jev vs an LLM on support triage
- Jev hands-on against Sonnet 5
- What Jev can do inside an agent harness
- Jev on 100 real agent tool calls
- Moderating a site with Jev
- Jev in 25 lines of Python
- Will OpenAI eat Jev's lunch?
- OpenAI is well positioned to fast-follow Jev
- Ollaya on Hacker News
- Jev in 25 lines, on Hacker News
- JevBench on Hacker News
- Jev-based code review on Hacker News
- Jev on 770 AITA posts
- Jevper on Hacker News
- Jevdit on Hacker News
- Cookbooks Index
- Jev with Coding Agents
- Legal
- Jev Radar
- TypeSafe's Jev Explained: Why AI Decisions May Not Need a Chatbot
- Jev explained for the normies
- Eight SEO workflows for Jev
- TypeSafe Jev: the First Decision-Only Model Class, Benchmarked and Priced
- Typed Decisions, Not Chat
- What Is Jev? How to Implement TypeSafe AI's Decision Model
- He Says He Co-Invented ChatGPT. His New AI, Jev, Won't Write a Word.
- JEV is a revolution for SEO
- TypeSafe AI — typesafe.ai
- Manifesto: Composable AI
- The Bitterest Lesson
- TypeSafe AI Discord
- TypeSafe AI on X
- TypeSafe AI on LinkedIn
- Awesome Jev — yibie
- Awesome Jev by TypeSafe
- Awesome Jev / TypeSafe
- Agentic RL 零基础教程
- Awesome Jev Tools
- Awesome Jev — heyjunpenn
- Made with Jev
- Awesome Jev — awesomejev.com
- The Year in AI Papers
- Jev (AI model)
- TypeSafe AI debuts model for machines that plays Doom
- TypeSafe AI's Jev offers an alternative to LLMs that claims to be 193x faster and 445x cheaper
- [AINews] Jev: a “System One Model” that only decides/classifies/routes/scores — >100x faster, >200x cheaper than small frontier LLMs
- Introducing System One Models and Jev
- TypeSafe AI's Jev Is Not an LLM — And That May Be the Point
- Jev: TypeSafe's System One Model Explained
- AI multiple choice, not essay writing
- Six uses that stuck after 60 days
- The open System One roundup
- Where the Jev discussion happened
- API Reference
- Models
- System One — docs.typesafe.ai
- AI Primer: RLCD and Calibration
- TypeSafe Is Out of Stealth
- Jev Python Tutorial: Classify and Score Requests
- How to Use Jev: A Practical Guide
- AI That Doesn't Talk: A Plain-English Guide to Jev
- Jev as a Really Smart Switch Statement
- Jev Projects Roundup Thread
- Classify, Route, and Score with Jev and AI SDK
- A Deep Dive into Jev
- Exploring Jev for AI-Driven Mobile QA
- Launch: Introducing System One Models & Jev
- TypeSafe Documentation
- Quick Start
Start here with the Jev AI model
Featured entries in guides & articles.
The Jev Day release post: Jev 1.14.0 under jev-preview plus three danger-zone features — composable images on both models, the box question type on 1.14 only, and opt-in 262k context.
Jev Guides & ArticlesArticle#official#release#vision
Official
An unofficial, agent-maintained knowledge base about TypeSafe's Jev, served as plain Markdown so a coding agent can fetch it to judge whether Jev fits a project, then build against the HTTP contract, SDKs, and cookbooks.
Jev Guides & ArticlesDocs#community#wiki#agents
Community
A desk recording news, benchmarks, and listed API prices for TypeSafe's Jev and other decision models, with each figure linked to the page that printed it. Updated October 15, 2026, and not affiliated with TypeSafe.
Jev Guides & ArticlesDocs#community#news#benchmarks
Community
Jev AI model articles
Original guides that go deeper on Jev guides & articles.
The typed-answer shape removes a category of data risk, not all of it. Zero data retention per surface, the legal set to read, and the controls that remain yours to run.
Jev Guides & Articles#privacy#compliance#legal
Read article
TypeSafe serves Jev from one API. A second tier of independent sites wraps it with their own keys, credits, and playgrounds. How to read the disclaimers before you paste a key.
Jev Guides & Articles#ecosystem#trust#hosting
Read article
The first ten days produced three receptions that rarely meet: a Product Hunt launch, a 620-point Hacker News thread, and a r/LocalLLaMA that doubted the framing. Reading them together.
Jev Guides & Articles#launch#community#reception
Read article
From the Jev community
Watch walkthroughs, read the threads, and see what builders are posting.
YouTube: Gary Explains the catch: Jev understands natural language but answers with structured values and confidence.
YouTube: Sam Witteveen on System 1 thinking, then Choice, Score, and Noul demos, and chained actions.
YouTube: Nate Herk compares speed and cost against ordinary models, then builds an X feed classifier and a paper-trading prototype.
Hacker News: Spoken-language learning with video scenes branching on TypeSafe Jev.
j_rcht1 pointShow HN: Worklaude – learn by speaking; video scenes branch on TypeSafe JEVRead the thread on Hacker NewsHacker News: OpenAI's Luna Decisions API framed as a fast follow to TypeSafe's Jev wave.
matt_d6 pointsOpenAI Answers TypeSafe's Jev with a Decision API Built on LunaRead the thread on Hacker NewsHacker News: Nikola Balić on what made the Jev launch easy to try and easy to share.
nkko2 pointsWhat TypeSafe Got Right with the Jev LaunchRead the thread on Hacker NewsHacker News: Pointer to a DiffusionGemma plus vLLM tutorial for a Jev-shaped classifier.
1 pointHow to build a Jev-style classifier with DiffusionGemma and vLLMRead the thread on Hacker News