Jev for beginners: how to use it and what to build

TypeSafe AI's Jev decision model returns type-safe structured values — a choice, a score, or a probability — instead of generated text, priced at 4 cents per million input tokens with no output charge, according to a hands-on account by Claire Vo. Vo ran Jev on five projects, including categorizing 1,700 pull requests for 9 cents, classifying 200,000 items across 1,100 ChatPRD product signals, and building a live dashboard from 4,500 YouTube comments. Vo said she stopped using Jev alone and now pairs it with other models.

Jev is TypeSafe AI’s new decision model. It returns type-safe structured values a choice, a score, a probability instead of generated text, at 4 cents per million input tokens with no output charge. This week I ran it on five real projects: PR categorization, a meta-analysis of my own Claude and Codex sessions, Gmail triage, the ChatPRD product insights graph, and a live audience dashboard built from 4,500 YouTube comments. Listen or watch on YouTube https://youtu.be/-KIBgpGA XI , Spotify https://open.spotify.com/show/4aRP2XSavdtrLG5FZoonOK , or Apple Podcasts https://podcasts.apple.com/us/podcast/how-i-ai/id1809663079 What you’ll learn: 1. What makes Jev fundamentally different from every other model I’ve used 2. How I analyzed 1,700 PRs for 9 cents and what I found out about where my engineering effort actually went 3. The personal meta-analysis you can run on your own Claude and Codex sessions right now 4. Why I stopped using Jev alone, and what I pair it with now 5. How I turned 4,500 YouTube comments into a searchable audience dashboard for almost nothing 6. The real-time app I built in an afternoon that shows something surprising about Jev’s speed 7. Why Jev’s pricing model is different from any LLM I’ve used, and what it makes practical to build 8. The ChatPRD product insights project: 1,100 signals, 200,000 classifications, and what it cost me Brought to you by: OpenArt https://openart.ai/suite/chat?utm source=online&utm medium=influencer&utm campaign=infl-howiai-ga2-na-acq-web —An all-in-one AI creation platform for images, videos, music, audio, and more In this episode, we cover: 00:00 https://www.youtube.com/watch?v=-KIBgpGA XI Jev launch and what makes it different from every other model 02:49 https://www.youtube.com/watch?v=-KIBgpGA XI&t=169s Type-safe values explained 05:28 https://www.youtube.com/watch?v=-KIBgpGA XI&t=328s Understanding Jev outputs 07:39 https://www.youtube.com/watch?v=-KIBgpGA XI&t=459s Use case 1: PR categorization and pairwise clustering 11:12 https://www.youtube.com/watch?v=-KIBgpGA XI&t=672s Use case 2: analyzing your own local Claude Code and Codex sessions 13:00 https://www.youtube.com/watch?v=-KIBgpGA XI&t=780s Use case 3: Gmail triage with Jev scoring and LLM follow-up 14:30 https://www.youtube.com/watch?v=-KIBgpGA XI&t=870s Use case 4: ChatPRD’s product insights graph 18:17 https://www.youtube.com/watch?v=-KIBgpGA XI&t=1097s Demo: How I AI audience signal dashboard 22:14 https://www.youtube.com/watch?v=-KIBgpGA XI&t=1334s Demo: voice-to-color emotion-mapping app 25:16 https://www.youtube.com/watch?v=-KIBgpGA XI&t=1516s Jev week recap and what’s coming in episode 2 Tools referenced: • Jev TypeSafe AI : https://typesafe.ai https://typesafe.ai • Vercel: https://vercel.com/ai https://vercel.com/ai • GitHub API: https://docs.github.com/en/rest https://docs.github.com/en/rest • YouTube Data API v3: https://developers.google.com/youtube/v3 https://developers.google.com/youtube/v3 • OpenAI Realtime Voice API: https://platform.openai.com/docs/guides/realtime https://platform.openai.com/docs/guides/realtime • Gemini 3.5 Flash-Lite: https://ai.google.dev/gemini-api/docs/models/gemini-3.5-flash-lite https://ai.google.dev/gemini-api/docs/models/gemini-3.5-flash-lite • API Ninjas Quotes API: https://api-ninjas.com/api/quotes https://api-ninjas.com/api/quotes Where to find Claire Vo: ChatPRD: https://www.chatprd.ai/ https://www.chatprd.ai/ Website: https://clairevo.com/ https://clairevo.com/ LinkedIn: https://www.linkedin.com/in/clairevo/ https://www.linkedin.com/in/clairevo/ Production and marketing by https://penname.co/ https://penname.co/ . For inquiries about sponsoring the podcast, email \ email protected\ https://www.lennysnewsletter.com/cdn-cgi/l/email-protection .