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
jev-git
A single-binary Rust gate that screens staged git diffs for unredacted secrets, prompt-injection attacks, and destructive commands with calibrated Jev probabilities in about 80 ms, invoked as git jev.
- Category
- Tools & Integrations
- Published by
- Community
- Author
- AkashPriyadarshii
- Added
- 2026-09-22
Tagscommunityrustcliguardrailssecurity
Highlights
- Runs in about 80 ms p50 inside git commit or git push, where full LLMs take 4 to 6 seconds per commit.
- A single statically linked Rust binary under 2 MB with no daemons and no background memory.
- Evaluates noul decisions via https://api.typesafe.ai/v1/systemone using blocking HTTP (ureq) for zero-runtime startup overhead.
- Installs a pre-commit hook with git jev install; git jev check works on demand or on a piped diff.
Quickstart
bash
git jev install
git jev check
git diff HEAD~1 | git jev checkWatch out
MIT-licensed. Checks call api.typesafe.ai through a blocking HTTP client; the project is explicitly not a multi-agent framework, an interactive code-writing LLM, or a heavy linter or syntax parser.
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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