Guideyoutube.com/@TheHunterBohm
I paired Jev with Astra
Hunter Bohm on how Jev works, pricing and parallel decisions, whether it is actually new, and his own Astra plus Jev benchmark.
Updated Oct 3, 2026
What people are building with Jev
Projects, posts and guides about Jev, the System One model from TypeSafe AI. Each entry links to its source and shows the cost and speed its author reported.
- 756builds
- 164guides
- 21use cases
Diogo Almeida
@CompleteSkeptic
After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI? I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev • 20-200x faster • 40-400x cheaper (w/ output tokens free) • Frontier composable intelligence optimized for decisions AFAICT the shortest path to AI-based economic revolution
Guideyoutube.com/@promptwarrior
Jev: full tutorial
Moritz starts from the API key, then builds three prototypes: a voice-controlled browser, memory retrieval, and a YouTube topic scorer, and says where Jev still needs an LLM or plain code around it.
Guidearize.com
Trace every judgment with Phoenix
Arize’s instrumentation for Jev: one line of code to trace each decision, with the integration docs.
Guidejevable.com
Jevable
Nikunj Kothari’s directory of the demos posted on X, filterable by category, with a button to add your own.
Guidegithub.com
awesome-jev (verified catalog)
A community-maintained catalog that claims 433 verified open-source projects built with Jev.
Guidegithub.com
jev-skill
Oscar Wu’s collection of Jev use cases, workflows and agent skills, gathered in one repository.
Jony Musky
@jonymusky
Hice un video de 4 min (en español) explicando qué es Jev, qué no hace, y por qué cambia dónde ponés un modelo.
Guidex.com
Qué es Jev, en 4 minutos
Jony Musky, in Spanish: what Jev is, what it does not do, and why it changes where you put a model.
Guidelatent.space
Jev, with Diogo Almeida
Latent Space interviews TypeSafe's Diogo Almeida about System One models and what Jev is for.
Guideyoutube.com/@RoboNuggets
Jev will 10x your Claude Code (Here's How)
RoboNuggets: how to put Jev to work inside Claude Code.
Guideyoutube.com/@MG_cafe
Jev Claude Code: Quick Setup
MG walks through setting Jev up with Claude Code from scratch.
Guideyoutube.com/@AIJasonZ
Jev + Treg is a crazy combo for automation...
AI Jason pairs Jev with Treg and builds automation on top of the two.
Guideyoutube.com/@AI-GPTWorkshop
JEV Is NOT an LLM — Here's What It Actually Does
Zubair Trabzada's AI Workshop: what Jev actually does, and why calling it an LLM misleads.
Guideyoutube.com/@Supabase
The brand new AI: Jev
Supabase, in a short: Jev introduced in under a minute.
Guideyoutube.com/@samwitteveenai
Open Jev Models Are Here!!
Sam Witteveen goes through the open decision models released in Jev's first week.
Guideyoutube.com/@engineerprompt
Steerable Reranking: How JEV Solves RAG
Prompt Engineering puts Jev in the reranking step of a RAG pipeline: why vector search and cosine similarity fail, how a steerable reranker works, and how it compares with LLM rerankers and cross-encoders. A Colab notebook comes with it.
Guideyoutube.com/@JulianGoldieSEO
Jev AI Full COURSE 1 HOUR
Julian Goldie’s hour-long course: the three question types, many decisions batched in one request, and ten use cases, from email sorting and lead scoring to internal linking across 586 pages and a browser agent finding flights.
Guideyoutube.com/@KevBuildsApps
Jev AI just changed video editing forever
Kev makes Jev the decision maker inside HyperEdit, his open-source AI video editor, and walks through the whole setup with Claude Code. The repository is free on GitHub.
Guideyoutube.com/@CoderOne
Open Source, Faster Jev is HERE
Coderone on Laya, the open System One model from Convai Innovations: what typed decisions are, why they replace a share of LLM calls, and Laya run locally to see if its figures hold up.
Guideyoutube.com/@daveebbelaar
Jev Explained for Python Developers
Dave Ebbelaar in Python: a support-ticket classification first, then Choice, Score and Noul, several questions in one call, and latency and price next to Claude Haiku, Opus 5 and Fable 5.1.
Guideyoutube.com/@Raul-Marin-Calleja
Jev para diseñadores: uso en Design Systems
Raúl Marín, in Spanish: what Jev decides against what an LLM writes, then closed judgments applied to a design system — variant choice, email classification next to GPT, fast UI rendering and screens generated from prompts. 21 minutes, with chapters.
Akshay 🚀
@akshay_pachaar
Guidex.com
Build a Jev Judge
Akshay Pachaar’s worked example: evaluate a refund-support agent with Jev instead of a generative judge, and record the verdicts in Opik. Separates the judge from the evaluation system, and is explicit that a 0.98 is a probability about one proposition, not a percentage of the answer.
Guidegithub.com
Opik
Comet’s open-source evaluation and tracing platform, Apache-2.0. Datasets, experiments and trace-level feedback, with a custom-metric interface that takes several named scores from one call — which is how a Jev judge is wired into it.
Guidelinkedin.com
Qué es Jev, el modelo System One de TypeSafe AI
Our explainer in Spanish, on LinkedIn: what a System One model is, what Jev decides, and where it fits.
Guidelinkedin.com
¿Jev es open source? No, pero hay 35 alternativas abiertas
Our piece in Spanish, on LinkedIn: Jev is closed, but 35 open projects train, adapt or replace it. The four families, the ten with the most stars, and why calibration, not accuracy, is the number to read before you trust any of them.
Guideyoutube.com/@ZazenCodes
Jev explained with Python examples
ZazenCodes works through Jev hands on in Python, from a first call to typed decisions.
Guideyoutube.com/@EdwardDonner
Is Jev really better, faster and cheaper?
Edward Donner puts Jev to the test against Luna.
Guideyoutube.com/@seanai
Jev System One Model, clearly explained
Sean’s AI Stories: TypeSafe AI, fast judgment and evaluation, explained end to end.
Guideyoutube.com/@CloudCodes
Run a Jev-style model on your own GPU
Cloud Codes sets up a Jev-style decision model on local hardware.
Guideyoutube.com/@RobTheAIGuy
Jev is INSANE! How to use it and its use cases
Rob The AI Guy explains Jev fully, with the use cases he found.
Guideyoutube.com/@LangChain
Building a harness with Jev
LangChain walks through putting Jev inside an agent harness.
Guideyoutube.com/@ColeMedin
Jev is the first of a whole new class of AI models
Cole Medin on what the class is, and how to actually use it.
Guideyoutube.com/@LatentSpacePod
Jev Creator: System One models for prod, not god
Latent Space interviews TypeSafe’s Diogo Almeida on what System One models are for.
Guideyoutube.com/@AdamGardner
Jev vs. Laya: what they are and the controversy
Adam Gardner on both decision models and the argument around them.
Guideyoutube.com/@Telusko
Jev crash course: typed AI decisions
Telusko’s crash course on typed decisions with TypeSafe.
Guideyoutube.com/@krishnaik06
Will Jev replace LLMs?
Krish Naik on what Jev is from TypeSafe AI, and whether it replaces an LLM.
Guideyoutube.com/@LangChain
How to build a harness with Jev
A LangChain and TypeSafe conversation on building a harness around Jev.
Guideyoutube.com/@TheFintechBuilder
50 financial jobs, one model
The Fintech Builder runs Jev on fifty financial jobs and shows where it works and where it does not.
Guideyoutube.com/@builderio
Is Jev actually good at computer use?
Steve from Builder.io tests Jev on computer use.
Guideyoutube.com/@MikeyNoCode
Jev full tutorial for beginners
Mikey No Code sets Jev up from scratch and shows how to use it.
Guideyoutube.com/@GitButler
What is Jev? (and is Laya better?)
GitButler on what Jev is, and how Laya compares.
Guideyoutube.com/@AIAutomationStation
What is Jev and how to use it?
AI Automation Station on what Jev is and why it matters.
Guideyoutube.com/@Thetips4you
What is Jev, and how to use it?
Thetips4you’s short walkthrough of Jev and how to call it.
Jev docs and cookbooks
What to read before you build: TypeSafe’s own quickstart, docs and cookbooks, the LangChain harness guide, the awesome-jev lists other builders keep, and the launch coverage.
164 guides