GitHubRouting and model choice
jev-mcp-dispatcher
Plain-language MCP tool calls with no LLM at all, only Jev.
abhishekashokvkumar
4Updated Nov 10, 2026
What people are building with Jev
855 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.
- 855builds
- 181guides
- 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
GitHubSDKs and integrations
maza
A local MCP gateway with Jev tool discovery and a dashboard.
prasanth263
0Our guidemadewithjev.com
How does a Jev router work?
A Jev router asks which model, tool or skill the next turn needs before anything is spent. How it works, why routing down and back up can cost more than not routing, and 16 routers for Claude Code, Codex and OpenRouter.
GitHubRouting and model choice
jev-harness-router
One batched call picks model tier, tools, skill and effort for each turn.
Joaquin Marcoff
4
GitHubCoding and code review
jev-review-action
A GitHub Action that reviews and classifies PRs with Jev alone.
wang2
3
GitHubCoding and code review
patdown
A fuzzy linter: Jev gives your code an ocular patdown.
Tyler Nieman
15
Guidedocs.typesafe.ai
Cookbook: skill suggestion
TypeSafe’s recipe for picking at most one skill per agent turn out of 182: one request ranks them all, a second reads the top three.
GitHubTools and apps
guesswork
Fish-style zsh autosuggestions, ranked by Jev instead of by prefix.
Malek Gara-Hellal
3
GitHubDocuments and OCR
capture
A private Mac voice diary: local transcription, Jev sorting, Notion library.
Abid A Gafoor
3Our guidemadewithjev.com
How does Jev compaction work?
Jev compaction scores every tool call and drops the stale ones, so what is kept stays word for word. How it works, how it differs from a summary, 6 plugins, and the case against.
GitHubSearch
jev-search
Offline Obsidian search, with an optional Jev rerank you approve first.
jh1373
1
GitHubSearch
ensk
An English–Icelandic dictionary with Jev reranking the results.
Jökull Sólberg Auðunsson
0
GitHubDocuments and OCR
jev-reviewer
Systematic-review data from trial reports, every answer a verbatim quote.
Ahmad Sofi-Mahmudi
47
GitHubTrading and markets
jevocks
A stock terminal: Valyu brings the evidence, Jev gives the status.
Prosper Otemuyiwa
40
GitHubGames and real time
Beat Jev
A penalty shootout against Jev, on Render Workflows and Postgres.
Ojus M Save
1
Our guidemadewithjev.com
Jev with Claude Code
Let Claude reason, let Jev decide. The published builds behind the 200× headline, Jev compaction taking a session from about a million tokens to 86,000 in one second, and the cases where the larger model still wins.
GitHubGames and real time
Jev runs a city’s traffic
A traffic simulation where Jev controls a whole city.
Siddhant Kuwar
1
GitHubGames and real time
TypeEvacSafe
A fire evacuation simulation with a Jev-style decision for each person.
Meteor Simulation
2
GitHubGames and real time
jev-piano
Jev can’t write a note, but with the right questions it improvises piano.
Paul
6
Guidedevelopers.cloudflare.com
Jev on Cloudflare
Examples for support routing, refund decisions and risk escalation.
GitHubGames and real time
Can Jev steer music?
Jev picks the plan; code renders the sheet music, audio and MIDI.
Stephen Wu
2
GitHubTools and apps
Guess the age from a Korean name
A small React app where Jev guesses an age band from a name.
C.H Lee
1
GitHubBenchmarks and evals
eve
Vercel’s open agent framework, with Jev as its default evaluate model.
Vercel
5.6kOur guidemadewithjev.com
Jev with Vercel
Call Jev from Vercel two ways: AI SDK's experimental_decide, or AI Gateway's TypeSafe-compatible API with model typesafe-ai/jev. Same $0.042 per million input tokens, zero data retention on Pro, and the builds that use it.
SkillAgents and browsers
TypeSafe agent skills
The official skill for building with Jev, installable with one command.
TypeSafe AI
2.7k
SkillAgents and browsers
skillranker
A Rust CLI where Jev ranks agent skills for the next step.
Jeff Emanuel
134
Guidelangchain.com
Building a harness with Jev
Routing between models, and blocking risky tool calls with a Jev decision.
SkillRouting and model choice
jev-agent-skill-router
Routes which agent skill runs, with typed Jev decisions and confidence.
Dewaldt Huysamen
29
SkillCoding and code review
jev-judgment
An agent skill that sends a coding agent’s closed judgments to Jev.
HyunjunJeon
6