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Jev AI examples: real builds, updated daily
305 real Jev AI builds and public demos, updated daily. Original text, metrics, and a link back to each source.
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Public Jev AI examples and demos, not official TypeSafe docs. Clients and SDKs are in the Jev GitHub projects. Paths for jev-latest, Vercel, and OpenRouter are in the September 2026 channel map.
Agent-skill repositories are listed on Jev skills on GitHub.
OpenRouter model ids recorded for Jev AI are on Jev AI on OpenRouter. Rubric and eval posts are on Jev as a judge. How the company and the model fit together is on TypeSafe AI. The pricing calculator uses the published input rate.
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@JeffreyBiles says Jev opens up entirely new question types. The post includes a video.
Jev opens up entirely new question types
@_avichawla shows pg-jev, a Postgres extension that calls Jev from SQL with jev(), jev_prob(), jev_choice(), and jev_score(), and no vector column.
Another insane Jev use case! Traditional database filters need precise, predefined conditions. But many questions are semantic: - Is this article mainly about s…
Quoted @_avichawla
@kushalbyatnal introduces Jevbox: Jev files uploads into a folder tree and search picks folder, then document, then section, with citations and an MCP server.
introducing Jevbox: an open-source document drive that organizes itself, answers questions, and cites everything (all powered by Jev). TLDR; - upload anything a…
@DavidKPiano introduces Jevspresso: XState sets what is possible, Jev picks the next move. Try it at jevspresso.dev.
I mixed Jev + an espresso (state) machine. Turns out, Jev's a pretty good barista ☕ Introducing Jevspresso: XState determines what's possible, Jev decides the n…
@Sumanth_077 explains jevgrep: Jev judges which folders, files, and declarations are relevant, then returns source excerpts for the coding agent.
Jev for semantic code search! jevgrep is a CLI for coding agents that helps them find relevant code when they know what a behavior does, but not where it lives…
Quoted @Sumanth_077
@kohawithstuff built a browser GTA and made TypeSafe's Jev the brain that drives NPC movement and interactions, in what they call one prompt.
I built GTA in the browser and made JEV AI Model by @typesafeai the brain for the app. drives the NPC movements and Interactions. all built in "one prompt"
Quoted @kohawithstuff
@dbreunig sketched a model router in about 15 minutes with DSPy and Jev that picks from the initial prompt, and linked a gist.
A quick example of a model router, using DSPy and Jev, based on your initial prompt. Sketched this out in ~15 min, by request, and am surprised at how well it w…
@vercel says Jev is in the AI SDK for Python, tested by detecting Python vs English as text is typed and by writing Python one decision at a time.
Jev is now in the AI SDK for Python. To test it, we ran two experiments: ▪︎ Detecting Python vs. English as text is typed ▪︎ Writing Python, one decision at a t…
@shawnbuilds made a custom Jev memory harness for Claude Code mods, using TypeSafe via treg, and says the rebuild prompt is below the post.
Claude Code Mods make Claude 100% customizable, so I built a custom Jev memory harness built using @typesafeai via @treg_ai thanks to @trq212 for the idea! full…
Quoted @trq212
@PageIndexAI shows long-document search with TypeSafe Jev and PageIndex, with no vector database and no embeddings.
Inspired by @EGafni’s Twitter thread on combining Jev with PageIndex. We show how to build long-document search with @typesafeai Jev + PageIndex. No vector data…
@jasonzhou1993 says treg uses Jev in production for traffic classification, onboarding, and reranked search: about 10x cheaper, 18x faster, and 30% more accurate than GPT6-luna in their tests.
15min @typesafe Jeveloper tutorial 🧠 My team at @treg_ai has been using Jev a lot in prod: - Classify web traffic - Smart onboarding - Jev-reranked search ~10x…
Quoted @jasonzhou1993
@atlasformac lists auto tagging with Jev by TypeSafe among the Atlas 1.7.1 changes, next to a new inspector, color search, a Firefox extension, notes, and CLI access.
What's new in Atlas 1.7.1 → Auto tagging with Jev by @typesafeai → All-new inspector → Search by color → Firefox extension (!!!) → Notes → CLI access Plus dozen…
@MadisonJRickert built a Jev classifier for Claude Code auto mode and says the permission checks it decides are 2x faster.
Anthropic released native mods for customizing Claude Code yesterday, so I did the obvious thing and built a Jev-based classifier for auto mode! 2x faster permi…
"@N01ennn shows a RAG loop where one Jev call scores 20 passages + answerable/injection gates, then a second Jev call grounds claims."
this is pure f*cking treasure A Stanford AI research group finally drew the perfect RAG system: retrieval, Jev and agents in one loop, and it fixes the 3 things…
@DominikTornow's stfu asks Jev on each prompt how long Claude's reply should be, then adds that limit to the turn.
Shut up Claude with @typesafeai. On each prompt, Jev decides how long the reply should be and adds a length limit to the turn. Get an answer, not an essay. http…
"@gippp69 routes 20,000 events/day with Jev so only 4% reach a writer: Jev $0.84, full loop $29.04."
Jev builders: the model bill is decided before the model is called /routing 20,000 events/day become: → 14,000 die as noise → 4,700 become logs → 800 earn a dra…
@N01ennn maps TypeSafe’s agent docs into nine Jev patterns under one rule: the LLM thinks, Jev decides, code acts — routing, guardrails, gating, triage, and more.
this is pure f*cking treasure TypeSafeAI engineers spelled out in their docs exactly how Jev fits inside an agent, and these patterns are perfect one rule behin…
Quoted @N01ennn
@haoailab put Jev in Minecraft PvP: DJev scores every combat move in one pass (~24 ms), up to ~40 decisions/s, with a public server at mc.alexzms.com.
🚀 We let Jev play Minecraft. And we just can't beat it! 😭 ⚡ Jev: 24 ms decisions 🧠 You: ~200 ms reactions It moves before you even see it move. Way too strong!…
@rox_ai swapped LLM reranking for Jev classification on sales context retrieval and reports 20× faster, 10× cheaper, and 12% more accurate than GPT-5 Mini.
We used Jev to retrieve sales data 20x faster, 10x cheaper, and 12% more accurate than GPT-5 Mini. Every time a Rox agent answers a query, it pulls from relevan…
OpenRouter launched typesafe/jev-router, a cache-aware model router powered by Jev that picks model and reasoning effort per request.
Introducing typesafe/jev-router: a cache-aware model router powered by Jev and @typesafeai The Jev Router picks the best model and reasoning effort for each req…
"@kraayenJon uses Jev to classify 479 LinkedIn bookmarks (topic, hook, format) in 225s for $0.0195 so saved posts become searchable."
Jev + LinkedIn bookmarks = your saved posts are finally searchable ✅ 479 posts classified in 225 seconds for $0.0195 🤯 LinkedIn has no native way to search what…
"@ElevenLabsDevs pairs live ElevenLabs transcription with Jev for scam risk and red flags; ~180ms per request, 11 requests for $0.00043."
Realtime scam detection using Jev and ElevenLabs. ElevenLabs transcribes the caller as they speak, Jev calculates total scam risk and detects common red flags.…
@nutlope trained Tev1 0.8B, a tiny Jev-like classifier, and shows it classifying tasks locally on a Mac with Ollama at about 50ms end to end. Weights and benchmarks are said to be coming soon.
Just trained Tev1 0.8B, a tiny Jev-like classifier. Here it is running completely locally on my mac with @ollama & classifying some tasks. It's extremely fast:…