Updated Sep 22, 2026

Citations

Sources

275 URLs cited at the bottom of stories. A link can sit on more than one article. For how we pick those URLs, see method.

TypeSafe 13

TypeSafe console login
console.typesafe.ai

TypeSafe drops the Jev waitlist; new accounts start with $5
TypeSafe console playground
console.typesafe.ai

TypeSafe starts pulling people off the Jev waitlist
Jev 1.13 jaggedness (TypeSafe docs)
docs.typesafe.ai

TypeSafe lists nine ways Jev 1.13 is still jagged, and asks for more
TypeSafe confidence docs
docs.typesafe.ai

One builder ran Jev on 1,500 of his own emails
TypeSafe documentation
docs.typesafe.ai

What Jev returns: System One in plain language
TypeSafe models page (Jev 1.13 limits)
docs.typesafe.ai

TypeSafe drops the Jev waitlist; new accounts start with $5 OpenRouter, Cloudflare, and Netlify start serving Jev LangChain ships a Jev classifier, then parks it on the agent loop
TypeSafe primitives (Choice, Score, Noul)
docs.typesafe.ai

What Jev returns: System One in plain language
Workflow evals
evals.typesafe.ai

What Jev returns: System One in plain language
Incident, Console is unavailable
status.typesafe.ai

TypeSafe posted an API and console outage, then said it was back
TypeSafe status
status.typesafe.ai

TypeSafe posted an API and console outage, then said it was back
Introducing System One Models & Jev (TypeSafe blog)
typesafe.ai

Every ran 777 judgments in under a second and still wanted a better accuracy check TypeSafe leaves stealth and ships Jev, a model that refuses to chat What Jev returns: System One in plain language
TypeSafe manifesto
typesafe.ai

Almeida's bet on Jevons paradox over chatbot price cuts
TypeSafe waitlist and product site
typesafe.ai

TypeSafe starts pulling people off the Jev waitlist TypeSafe leaves stealth and ships Jev, a model that refuses to chat

Posts on X 141

GitHub 71

Other pages 50

Vercel AI SDK TypeSafe provider docs
ai-sdk.dev

TypeSafe starts pulling people off the Jev waitlist
Testing Jev on public and private data
amankumar.ai

Aman Kumar ran about 16,000 Jev calls and called it a filter, not a classifier
JevBench ranking (Laya 70.1)
benchmarkheaven.com

djev reads DiffusionGemma as a decision API, and sits third on JevBench SimpleJev turns an open model into a classifier by reading the next-token logits Jared Palmer's Kev family copies Jev's API on Qwen, and trails it on new sources Laya, an Apache 2.0 System One stack, publishes where it beats Jev's numbers and where it does not JevBench scores typed decisions on four axes, and Jev's lead is a pricing story SemIf, a 4B open rebuild that reads option logits, sits 0.7 behind Jev on JevBench
The Bitterest Lesson
completeskeptic.com

Almeida's bet on Jevons paradox over chatbot price cuts
Exa demo
demos.exa.ai

Exa posts a demo that puts web results into Jev's state
Cloudflare Workers AI page for typesafe/jev
developers.cloudflare.com

Hono's author routes HTTP by meaning, then warns you not to OpenRouter, Cloudflare, and Netlify start serving Jev
Djev llms.txt
djev.dev

djev reads DiffusionGemma as a decision API, and sits third on JevBench
djev.dev
djev.dev

djev reads DiffusionGemma as a decision API, and sits third on JevBench
LangChain TypeSafe integration docs
docs.langchain.com

LangChain ships a Jev classifier, then parks it on the agent loop
Reduce agent context with TypeSafe Jev and LiteLLM
docs.litellm.ai

LiteLLM proxies Jev's evaluate endpoint and uses it to drop stale tool results
TypeSafe Jev on LiteLLM (pass-through)
docs.litellm.ai

LiteLLM proxies Jev's evaluate endpoint and uses it to drop stale tool results
TypeSafe pass-through docs
docs.litellm.ai

LiteLLM proxies Jev's evaluate endpoint and uses it to drop stale tool results
Mini-Vibe Check (Every / Mike Taylor)
every.to

Every ran 777 judgments in under a second and still wanted a better accuracy check
aac6fef/laya-mlx on Hugging Face
huggingface.co

laya-mlx runs the Laya checkpoints on Apple Silicon
Bespoke-Nimble-9B on Hugging Face
huggingface.co

Bespoke Nimble is an open 9B Jev-style model: 90% on its own 324-example holdout
convaiinnovations/laya on Hugging Face
huggingface.co

Laya, an Apache 2.0 System One stack, publishes where it beats Jev's numbers and where it does not
Kev weights on Hugging Face
huggingface.co

Jared Palmer's Kev family copies Jev's API on Qwen, and trails it on new sources
knowledgator/gliformer-large-v1 on Hugging Face
huggingface.co

LlamaIndex's Logan Markewich ships jeff, a local System One API on GLiFormer
LocalLLaMA/typed-decisions
huggingface.co

meraGPT posts Decider 1 ahead of Jev on a teacher-labelled set
Open-Jev-9B
huggingface.co

Open-Jev's released 9B checkpoint answers 179 of 231 public JevBench tasks
Public demo
jev-trader.vercel.app

A buy-or-sell every Monad block, with a mock default model
jevctl website
jevcli.vectorz.app

jevctl puts Jev on the command line, with a compaction hook that keeps lines verbatim
Hosted JevPilot demo
jevpilot.standardagents.ai

JevPilot is a playable driving sim that asks Jev which path to take
jevsearch playground
jevsearch.fly.dev

jevsearch re-ranks keyword hits with Jev and scored 83% Hit@1 on the author's TypeSafe docs set
Building a Harness with Jev (LangChain blog)
langchain.com

LangChain ships a Jev classifier, then parks it on the agent loop
Laya site
laya.convaiinnovations.com

Laya, an Apache 2.0 System One stack, publishes where it beats Jev's numbers and where it does not
Running Jev in Snowflake
lkranz.com

Jevflake puts Jev in Snowflake: noul, choice, and score as SQL functions
logicrw awesome-jev-projects site
logicrw.github.io

A week of Jev repos: routers, MCP, graphs, games
meraGPT, Introducing Decider 1
meragpt.com

meraGPT posts Decider 1 ahead of Jev on a teacher-labelled set
MotherDuck blog, prompt_jev
motherduck.com

MotherDuck's prompt_jev() labels 100,000 AG News rows in 40 seconds for $0.50
Netlify changelog, Jev on AI Gateway
netlify.com

OpenRouter, Cloudflare, and Netlify start serving Jev
npm, n8n-nodes-jev-classification
npmjs.com

An n8n community node routes Jev answers onto category branches, including Needs Review
OpenRouter model page for Jev Latest
openrouter.ai

OpenRouter, Cloudflare, and Netlify start serving Jev
Live table named in the post
poker.ccswitch.online

A Hold'em table asks Jev about the opponent and lets code pick the bet
jevis on pub.dev
pub.dev

Jevis is a Flutter integration-test agent that only taps what you registered
Injection Range (live)
semgate-example-90572511273.asia-northeast1.run.app

semgate asks Jev about each HTTP request, then a live range to attack it
Simple Jev site
simple-jev.featherless.ai

SimpleJev turns an open model into a classifier by reading the next-token logits
Reference docs
spring-ai-community.github.io

Spring publishes a Java client that asks Jev before the chat model runs
Christian Tzolov, Spring blog
spring.io

Spring publishes a Java client that asks Jev before the chat model runs
Can Jev Make SRE Agents More Reliable? (SREGym blog)
sregym.com

SREGym put Jev on a Codex agent: 24 passes out of 50, up from 20
Recorded dashboard
system-one-security-triage.rzuniga-9b4.workers.dev

A 100-case security triage demo put Jev at 65.3% balanced accuracy against Terra 75.1% and Opus 91.2%
Tim Fernholz, TechCrunch
techcrunch.com

TechCrunch covers Jev, and quotes a Vercel engineer who swapped Luna for it
Venice landing page for Jev
venice.ai

Venice lists Jev on its API: same key, no copy of the state
Ben Sabic, route form submissions with Jev
vercel.com

Vercel's form router keeps Jev's destination when confidence is at least 0.95
Jev model card on Vercel AI Gateway
vercel.com

Vercel says Jev is the fastest-adopted model in AI Gateway history, and makes it free until Sept 25 Stagehand, Chrome, and a11y trees: computer use as a Jev question TypeSafe starts pulling people off the Jev waitlist
September AI Gateway Production Index note
vercel.com

Vercel says Jev is the fastest-adopted model in AI Gateway history, and makes it free until Sept 25
Vercel, Jev is the fastest-adopted model in AI Gateway history
vercel.com

Vercel says Jev is the fastest-adopted model in AI Gateway history, and makes it free until Sept 25
Follow-up YouTube cut of the same run
youtube.com

One builder ran Jev on 1,500 of his own emails
JevBench public-subset JSON
zefan-cai.github.io

Open-Jev's released 9B checkpoint answers 179 of 231 public JevBench tasks
Open-Jev project site
zefan-cai.github.io

Open-Jev's released 9B checkpoint answers 179 of 231 public JevBench tasks