Article
CommunityJev Guides & Articles
What Is Jev AI? A Practical Getting-Started Guide
Charlie Chen's five-minute guide to Jev: the hosted API opened to everyone on 21 September 2026, Choice, Score, and Noul in practice, a working Python request, and the jevmodel.org playground with free tokens.
- Format
- Article
- Reading time
- 2 min
- Published by
- Community
- Author
- Charlie Chen
- Last verified
- Oct 2026
- Platforms
- API
Highlights
- Dates it: Jev announced 15 September 2026; the hosted API opened to everyone on 21 September 2026 with no waitlist.
- Model string jev-1.13.0, also available as jev-latest and jev-preview; a closed hosted model with no released weights.
- Up to eight questions per request; state up to 8,000 characters; 120 requests per minute per key; use Idempotency-Key on retries.
- Pricing: $0.042 per million input tokens and free output, the same list price on OpenRouter and Vercel AI Gateway.
- jevmodel.org offers 10,000 guest and 100,000 signed-in free input tokens; packs start at $9.90 for 15 million tokens and never expire.
Watch out
The article discloses that jevmodel.org, which it promotes, is an independent guide not affiliated with TypeSafe, and that its per-token price is higher than going direct. Latency figures are vendor claims, and the author advises pinning jev-1.13.0 once thresholds are tuned because aliases can move.
Questions about this entry
Short answers drawn from the linked project or page.
Typed values rather than prose: a chosen label plus a probability per option and confidence for choice; a possibly fractional position with probabilities and confidence for score; and a probability from 0 to 1 for noul. Your application still performs the action.
The current public string is jev-1.13.0, also available through the aliases jev-latest and jev-preview. The author advises pinning jev-1.13.0 once your thresholds are tuned, because aliases can move.
State can be a string or JSON value up to 8,000 characters, each request takes 1 to 8 questions, and the endpoint allows 120 requests per minute per key. Add an Idempotency-Key header when you retry.
TypeSafe's published price is $0.042 per million input tokens with output free, because the response is a typed value rather than generated text. The same list price applies on OpenRouter and Vercel AI Gateway.
Yes, on jevmodel.org, an independent guide and playground: 10,000 input tokens as a guest and 100,000 free input tokens when signed in, about 500 typical requests, with no card required. Token packs start at $9.90 for 15 million tokens and never expire, and failed requests are not charged.
Good starting points are support triage (topic, urgency, escalation), LLM routing, tool-call guardrails that score risk before an agent acts, and LLM-as-a-judge or RAG checks. It is not for drafting, summarizing, explaining, coding, or long reasoning.
Keep answer sets small and stable, name each question after the branch your code will take, set your own threshold in code instead of treating a 0.55 as a decision, measure on your own traffic, and log inputs, outputs, the model version, and what happened next.
More Jev resources like this
czmilo's long guide to TypeSafe's System One model: the 193.6x/444.6x benchmark claims, RLCD training, Cloudflare, OpenRouter, and LangChain availability, a 32K context window, and vendor caveats.
Jev Guides & ArticlesArticle#community#article#guide
Community
A step-by-step Chinese guide to putting Jev behind backend approval flows: obtain a JEV_API_KEY, send code, type, and scene to the evaluation endpoint, then route by confidence — 0.90 and above auto-pass, 0.70 to 0.90 human review, below 0.70 reject or retry.
Jev Guides & ArticlesArticle#community#article#api
Community
Crunchbase profile for Jev AI Model: an independent Raleigh, North Carolina playground and API for Jev and the Laya model family, with a free signed-in playground, comparisons across up to 25 labeled cases, and a key- and credit-gated API.
Jev Guides & Articles#community#company#playground
Community
A one-hour, six-step workshop built around a fighting game that teaches TypeSafe's Discriminative (Jev) decision model and puts it next to Gemini in a Google ADK workflow. It runs in Cloud Shell or anywhere signed into gcloud, with hosted Jev, a local DiffusionGemma VM, or a rehearsal stand-in.
Jev Guides & Articles#community#github#workshop
DeepInfra's reference for its hosted System One endpoint: POST /typesafe/v1/systemone takes a state, model, and questions and returns a model and answers, with a companion list-models endpoint.
Jev Guides & ArticlesDocs#community#docs#api
Community
A Chinese-language summary of the Latent Space interview with TypeSafe CEO Diogo Almeida, framing Jev as a production System One model rather than a general God model: parallel sampling, 70–500 ms latency, and $0.042 per million input tokens.
Jev Guides & ArticlesArticle#community#article#interview
Community
From the Jev guides
Original write-ups on what this entry is for.
From the Jev AI model community
Posts from builders shipping with Jev right now.