Jev by @typesafeai is now on OpenRouter, in beta. Jev is a System One model. Instead of generating text, it takes your app's state plus a typed question and returns a typed decision with a probability attached. There is no JSON prompting, parsing layer, and nothing to validate Show more
pi-jev (semantic tool router)
A Pi coding-agent extension that routes tools and skills with Jev: one pass activates only what a prompt needs, with opt-in model selection, tool-call guards, and compaction.
- Category
- Tools & Integrations
- Published by
- Community
- Author
- TheoOliveira
- Added
- 2026-09-22
Tagscommunitytypescriptcoding-agentroutingskills
Highlights
- jev_find_tools and jev_find_skill activate only the tools and skills a prompt needs instead of loading everything.
- A single JEV_THRESHOLD of 0.65 is the act-or-reject cutoff shared by the router, tools, skills, and auto mode.
- The pi-jev-gate CLI exits 0, 1, or 2 to gate subagents or CI pipelines on natural-language criteria.
- Automatic routing, model selection, the tool-call guard, and Jev compaction are all opt-in and off by default.
- When Jev is unreachable it fails closed: unjudged tools are not activated and keyword fallbacks report zero confidence.
Quickstart
bash
pi install npm:pi-jev
export TYPESAFE_API_KEY=ts_...
# inside Pi:
/jev statusWatch out
MIT-licensed. Needs a TypeSafe API key; automatic mode spends one Jev request per prompt, while heuristic fast paths classify locally.
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From the community
Posts from builders shipping with Jev right now.
Jev lands on OpenRouter
700 leads scored for $0.09
JEV is INSANE. We gave it 700 high-intent leads and personalised outreach messages. In 40 seconds, it predicted how each message would perform, assigned a confidence score and detected lead-message mismatches. All for just $0.09. JEV can also score leads, analyse buying Show more
Beating Gemini Flash Lite on an eval
Ran @typesafeai's Jev against an existing classifier eval that previously used Gemini 2.5 Flash Lite. It won both on quality (saturated the eval) and speed (6x)
Browser Use Ultrafast, powered by Jev
Breaking: Browser Use + Jev = Ultrafast ⚡ Findings flights took 7s and cost only $0.0039 🤯 > new action space every step > DOM state space > small LLM fallback to type (this video is at 1x speed btw) Built a tiny open source browser agent. try it below ↓
A really smart switch statement
hype-free explanation of jev: jev does not replace gpt / claude jev is just a *really* smart switch statement like if 2016 ml classifiers got 2026 levels of intelligence it's a new* type of tool that will make a lot of workloads insanely fast, cheap, and accurate * = and by Show more
@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
When a designer gets Jev
when a designer gets access to Jev