About
I built System One Models after Jev launched to keep track of all the cool things developers were building. I fully expect more System One AI models to launch soon and wanted a central place to track them.
What Jev is: TypeSafe AI's System One model. Instead of generating text, it makes typed probabilistic decisions -- pick one option from a list, score something 0-1, or extract a structured value from text. No prompts, no JSON parsing. You ask it a typed question and get a typed answer back.
What's on the site:
250+ real examples across 8 categories (content, ecommerce, support, trust, data)
8 recipes with copy-paste Python and TypeScript code
18 use cases in 5 domains
10 guides covering zero-shot classification, scoring, extraction, and more
26 glossary terms
The site is independent -- not affiliated with TypeSafe. What's next: integrations and comparisons once more System One models launch. If you're building with Jev, submit your project or recipe through the form on the site.