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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All 270 Jev Guides & Articles
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Showing 145–192 of 270 resources
A write-up of running a typesafe classifier against a Spanish legal corpus, replacing a hand-built regex with a probability, plus a thread arguing its best fit is as a pre-filter in front of an expensive model.
Jev Guides & ArticlesArticle#community#awesomejev#catalog-import
Community
A developer mapping free-text player intent to typed server actions for a text MMORPG with tabletop-RPG freedom, reporting 96% run-to-run agreement at 317 ms median against a 6.52-second previous setup.
Jev Guides & ArticlesArticle#community#awesomejev#catalog-import
Community
A 34-second video post from a design engineer who spent an evening reading up on Jev and condensed it into the clip, with the substantive examples appearing in the replies rather than the post.
Jev Guides & ArticlesArticle#community#awesomejev#catalog-import
Community
A page-by-page demo in which each wiki page yields a set of link candidates and Jev picks which one to click toward a stated goal, its author calling it simple and the speed the notable part.
Jev Guides & ArticlesArticle#community#awesomejev#catalog-import
Community
An open-source reproduction called Verdict: a post-trained 151M ModernBERT-base encoder with a GLiClass head, runnable in a browser tab, reporting its own calibration, order-invariance and failure numbers.
Jev Guides & ArticlesArticle#community#awesomejev#catalog-import
Community
Milvus bootcamp notebooks pairing vector retrieval with typesafe judgments across nine search scenarios: reranking, context filtering, stopping criteria, routing, cache reuse, guardrails, curation and evaluation.
Jev Guides & ArticlesArticle#community#awesomejev#catalog-import
Community
A searchable companion site to the heyjunpenn awesome-jev list: 962 GitHub projects with stars, languages, and one-line Jev decision summaries per repo.
Jev Guides & Articles#community#awesome-list#evaluation
Community
An independent wiki on TypeSafe's System One model: primitives, pricing, latency bands, console playground links, and ecosystem pointers.
Jev Guides & ArticlesDocs#community#docs#explainer
Community
The Hacker News thread for vsekhar/decide, a brew-installable CLI that pipes scripts and agent skills through TypeSafe Jev.
Jev Guides & ArticlesPost#community#integration
Community
The Hacker News thread for frodi-karlsson/onesie, covering stdin questions, shell-safety gates, and calibration over labelled commands.
Jev Guides & ArticlesPost#community#integration#evaluation
Community
The Hacker News thread for enigma-jev, a software Bombe plus live Enigma demo where Jev picks cribs and judges German plaintext.
Jev Guides & ArticlesPost#community#evaluation#games
Community
The Hacker News thread for WORKLAUDE, described as video scenes that branch on TypeSafe Jev while learners speak.
Jev Guides & ArticlesPost#community#agents
Community
The Hacker News thread for Selmar's calibration notes on Jev comment rules, batching traps, and ordering.py comparisons.
Jev Guides & ArticlesPost#community#evaluation#code-review
Community
The Hacker News thread for Bartosz Mikulski's 400-drawing Jev versus Sonnet evaluation on SVG text.
Jev Guides & ArticlesPost#community#evaluation
Community
The Hacker News thread for Odyssey at fly.rahmanyoonus.com, a lunar flight experience with Jev as flight director.
Jev Guides & ArticlesPost#community#games
Community
A community field guide to Jev and TypeSafe: the three typed primitives, runnable examples, a table for deciding when code beats a model, and directories of client libraries, agent tooling, and independent evaluations.
Jev Guides & Articles#community#jevbest
Community
AbdelStark/awesome-typesafeHTML
AbdelStark/awesome-typesafeHTMLThe New Stack reports OpenAI's limited-preview Decisions API on GPT-6 Luna: predefined answers with confidence scores in about 150 ms, framed as a response to Jev's decision-model wave.
Jev Guides & ArticlesArticle#community#evaluation
Community
The Hacker News thread for The New Stack's write-up on OpenAI's Luna-based Decisions API and how it compares to TypeSafe's Jev launch.
Jev Guides & ArticlesPost#community#evaluation
Community
The Hacker News thread for backnotprop's TexasSolver poker evaluation of Jev action choices, trap spots, and decomposed question shapes.
Jev Guides & ArticlesPost#community#evaluation
Community
The Hacker News Show HN thread for joshLong145's Python jev-cli wrapper around the TypeSafe System One HTTP API.
Jev Guides & ArticlesPost#community#cli
Community
Firecrawl's September 2026 explainer on Jev primitives, Vercel AI Gateway access, openjev/logit reproductions, and skeptical Reddit threads about classification prior art.
Jev Guides & ArticlesArticle#community#tutorial
Community
The Hacker News thread for Flavio Copes' JavaScript-oriented Jev tutorial covering choices, scores, latencies, and jagged edges.
Jev Guides & ArticlesPost#community#tutorial#javascript
Community
TechCrunch coverage of OpenAI's DevDay Decisions API beside TypeSafe's Jev, including agent-monitoring cost comparisons and CEO responses on X.
Jev Guides & ArticlesArticle#community#evaluation#agents
Community
Requesty's September 2026 guide to Jev as a System One model: state, Choice, Score, and Noul, plus how Requesty routes typesafe/jev-1.13.0.
Jev Guides & ArticlesArticle#community#article#explainer
Community
Powerdrill Bloom on what shipped with Jev 1.13.0: RLCD, the three question types, pricing, and TypeSafe's jaggedness page.
Jev Guides & ArticlesArticle#community#article#explainer
Community
OmniaKey's fact-checked table for jev-1.13.0, limits, and pricing, plus a live connectivity check through OmniaKey's alpha search endpoint.
Jev Guides & ArticlesArticle#community#article#explainer
Community
Kie.ai on Jev as a System One evaluation model: parallel typed questions, pricing, and where TypeSafe says hosted weights are not confirmed yet.
Jev Guides & ArticlesArticle#community#article#explainer
Community
Vercel's changelog for typesafe-ai/jev on AI Gateway, with AI SDK 7 experimental_evaluate and a support-ticket routing example.
Jev Guides & ArticlesArticle#community#article#vercel
Community
Opper hosts Kev 4B and typesafe/jev-latest on the same /v1/systemone compat route and compares accuracy, tokens, and latency on 362 post-release questions.
Jev Guides & ArticlesArticle#community#article#open-models
Community
James Cruce replays held-out routing decisions with local Laya against deterministic ordering, not a full Laya-versus-Jev accuracy bake-off.
Jev Guides & ArticlesArticle#community#article#open-models
Community
A long thread on launch language, whether constrained routing is novel, and links to open Jev-like work including OpenDecision.
Jev Guides & ArticlesPost#community#open-models#evaluation
Community
The Hacker News thread for an agent skill that scans a repo for LLM calls that could move to Jev and converts them to TypeSafe, OpenRouter, or Vercel.
Jev Guides & ArticlesPost#community#agents
Community
A qualitative-research use case thread: classifying free-text participant responses without training a custom model first.
Jev Guides & ArticlesPost#community#classification
Community
Show HN pointer to a Google Cloud Medium tutorial on building a Jev-shaped classifier with DiffusionGemma and vLLM.
Jev Guides & ArticlesPost#community#open-models
Community
Show HN for the public MCJev server where a diffusion language model picks combat moves from structured state.
Jev Guides & ArticlesPost#community#games
Community
Hacker News link to SafeDep's write-up on Gryph telemetry plus narrow Jev yes/no checks against developer policy.
Jev Guides & ArticlesPost#community#security#agents
Community
The Hacker News thread for Opper's hosted comparison of typesafe/jev-latest and opper/kev-4b on the same wire format.
Jev Guides & ArticlesPost#community#open-models#evaluation
Community
Thread on Kartik Pansuriya's essay arguing calibrated probabilities matter more than headline accuracy for production classifiers.
Jev Guides & ArticlesPost#community#calibration#evaluation
Community
Discussion of ASTGL's held-out routing replay that chose local Laya over hosted Jev for one Mac Studio deployment.
Jev Guides & ArticlesPost#community#open-models#routing
Community
Show HN for giga-james/jevgpt, an autoregressive chatbot built by repeatedly asking Jev to pick the next symbol from a tiny vocabulary.
Jev Guides & ArticlesPost#community#demos
Community
Hacker News link to Archestra's write-up comparing Jev with a constant benign baseline on production Claude Code tool calls.
Jev Guides & ArticlesPost#community#agents#evaluation
Community
Thread on jevchat, which samples one symbol at a time from Jev's choice distribution until STOP is drawn.
Jev Guides & ArticlesPost#community#demos
Community
Datadog's walkthrough of one Jev rubric that scores every criterion in a single request, then runs as online evals on live spans and as offline experiments.
Jev Guides & ArticlesArticle#community#article#evaluation
Community
Vercel's guide for when a typed Jev decision is enough and when a job still needs GPT-6 Astra to write, see images, or call tools.
Jev Guides & ArticlesArticle#community#article#routing
Community
Sam Reghenzi's product-taxonomy benchmark: a Jev Choice at every level versus a gpt-5.2 agent that descends the tree and can be sent back by a judge.
Jev Guides & ArticlesArticle#community#article#evaluation
Community
Simon Willison's overview of System One: one state, many parallel questions, and Noul, Choice, and Score instead of generated text.
Jev Guides & ArticlesArticle#community#article#explainer
Community
Alex Molas argues that a probability fit on TypeSafe's data is not calibrated on yours, so Jev's numbers should be treated as scores.
Jev Guides & ArticlesArticle#community#article#calibration
Community
Allan Riordan Boll reads one-token logprobs so a chat model returns a letter and a distribution, including on webcam frames from a vision model.
Jev Guides & ArticlesArticle#community#article#open-models
Community
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