JevStation — Jev: Typed Questions, Structured Answers

# JevStation > Run Jev, the TypeSafe System One model: typed questions in, structured answers with confidence out JevStation runs Jev, the System One model from TypeSafe. Jev is not a chat model: you submit a state plus typed questions (Choice, Score or Noul) and it returns structured answers with probability distributions and confidence values — no generated prose, no token stream. JevStation is the workspace around that contract: a playground, saved evaluations, reusable context and credit metering. English is at the root and Chinese under /zh; a first set of pages is also available in Japanese under /ja and Korean under /ko. ## Pages - [Home](https://jevstation.com/): JevStation runs Jev, the TypeSafe System One model: submit a state, ask typed questions, get structured answers with confidence. - [Pricing](https://jevstation.com/pricing): Start free with 50 credits, then buy a one-time Jev credit pack — $9.90 for 5,000 evaluations or $15.90 for 12,000. No subscription. - [Tools](https://jevstation.com/tools): Ready-to-run Jev use cases — LLM-as-a-judge, model routing, prompt injection detection, ticket triage, context compaction and moderation — each runnable in the browser with 50 free sign-up credits. - [Solutions](https://jevstation.com/solutions): Ready-made Jev tasks for spreadsheets: review sentiment, lead scoring, support ticket triage and keyword intent. Upload a CSV, get every row scored and labeled, pay in credits. - [Website SEO audit](https://jevstation.com/solutions/seo-audit): Enter a domain and get a scored SEO audit of up to 50 pages: technical checks plus Jev judging how helpful, specific and quotable each page is. Pay in credits. - [LLM eval for classification](https://jevstation.com/eval): Upload labeled examples and compare up to 8 decision models (AI classifiers) on your own data: accuracy, calibration (ECE), latency, cost and a starting confidence threshold. - [Banking77 card intents: 8 decision models compared](https://jevstatio