Jev Playground

The official Laya playground: eight tabs that show choice, score, and noul decisions on ticket triage, phishing, guardrails, RAG filtering, moderation, routing, and multilingual text.

A ZeroGPU demo of Julia 1: define a state and any set of choice, score, and noul questions and see per-option probabilities rendered as bars and raw JSON.

Turing Post TV tests Jev from early access in the TypeSafe playground, starting from the constraint that it does not write essays or code.

A browser Enigma I you can type on, plus live Bletchley-style breaking where Jev ranks cribs and judges plaintext, with research pages and CLI backtests.

A cinematic lunar expedition in the browser where Jev acts as flight director while telemetry, launch, and orbit scenes play out.

A spoken-language learning experience where video scenes branch on TypeSafe Jev decisions instead of multiple-choice clicks.

An independent browser playground that runs TypeSafe Jev on one question or several, with ready examples for routing, refunds, urgency, and the next agent action.

A live 2048 board on an independent Jev site. Each move is one Choice over the four directions, with a decision counter, latency, and a running cost.

A live Tetris board where each piece is one Jev Choice over the legal placements, with latency and cost shown as the pieces drop.

A Wikipedia race you play against Jev. From the same start article, each hop is one Choice over that page's outbound links.

Sixteen true-or-false statements you answer, then Jev answers with a Noul probability. Keeping only its confident calls is the point of the game.

A browser colony of mice, cats, traps, and food. Each animal's next move is judged by Jev, or by fixed rules when the model is turned off.

A public Minecraft Java server where a diffusion model called DJev scores every combat move in one pass. The lobby board tracks rounds against real players.

A link-and-discussion site run by Tom Nick. Every post, comment, and username is classified by the TypeSafe Jev API before it can be published.

A no-login page that scores pasted prose sentence by sentence with Jev, using a 0–4 style rubric, and highlights only the sentences that cross its threshold.

A browser question builder for Choice, Score, and Noul. You edit a JSON state, wire questions, and run them to see live probability bars.

Two browser games against a live Jev opponent: a first-person quick-scope arena and a neon survival challenge, where Jev picks tactics and authored code handles movement and physics.

Four board games against Jev where the model picks the move and code keeps the rules: tic-tac-toe, Connect Four, Battleship, and Wordle.

An autonomous Pac-Man recreation steered by Jev: before each junction the game sends the maze, actors, and legal directions as structured data, and Jev returns one direction with a probability per option.

A playable Tetris where you can drop pieces yourself or let the TypeSafe Choice primitive pick every move.

A live 3D chess match where Jev plays both sides with different personas and exposes the probability split behind every move.

Test a social post on 10,000 simulated AI readers with their own jobs, tastes, and memories before the real internet sees it.

A browser builder for System One requests: define state plus Noul, Choice, and Score questions, preview mock distributions, and generate Python typesafe_sdk code.

A 3D robot that understands without generating text: one TypeSafe call per turn with nine typed questions, then code decides whether to act, ask, or shrug.

A natural-language smart-room demo: describe a mood and Jev decides lights, curtains, TV, music, volume, and desk lamp in one request.

Say the moment and get reaction GIFs: Jev picks a reaction and literal subjects, then scores a KLIPY shortlist of up to 30 candidates from titles and tags.

Describe the startup you are looking for and Jev ranks the pile, asking once per startup whether it is a fit.

A first-person village where NPCs remember what you do and Jev decides how they treat you, with a board of 21 outcomes to earn before nightfall.

A public Jev API funded by creator fees from a token, with a playground, docs, use cases, and a smart treasury dashboard.

A git host for agents where every push and pull request gets a typed Jev review, every branch move a signed certificate, and sites deploy from a repo.

Browser playground in the TypeSafe console for trying System One: paste state, define typed questions, and inspect answers with probabilities, confidence, latency, and usage.

A writing checker that runs seven named Jev questions, covering hedging, filler phrases, passive voice, tone, and actionability, and shows each verdict with its own confidence.

A small demo app that fetches a URL, turns the page into clean Markdown, and asks Jev ten bounded Choice questions about what a first-time visitor is likely to understand.

A MuJoCo and Franka Panda workbench where Jev chooses the next manipulation step for pick-and-place, stacking, and obstacle-carry tasks, with rule baselines and side-by-side model comparison.

Browser lab where every 2048 move is one Jev Choice over the four directions with no heuristic fallback, surfacing the probability distribution, confidence, latency and token cost live.

Cloudflare Worker and React app that sends pasted corporate prose through about 45 typed Jev questions, then emits rustc-style diagnostics for passive-aggression, urgency and information density.

A joke npm package that left-pads a string by asking Jev to choose among space_0 through space_10 in one Choice, spending a model call where padStart() would do.

A multiplayer demo workflow builder for Jev built with Liveblocks: wire Jev and LLM steps together, call the workflow through a REST API, and preview test runs with shared state and cursors.

Interactive browser experiments that expose Jev's judgments: a support-message Decision Lab and a driving simulation where structured sensor state becomes typed steer, brake, and overtake decisions.

An OpenRouter Labs recipe that has Claude rewrite a pasted prompt into Jev questions, then runs Jev on every row while a chat model races the same job, comparing answers, requests, time, cost, and accuracy.

A single shared chess game where visitors play against Jev, which weighs every legal move at once as one Choice question and shades the board with its probabilities.

A Telegram channel X-ray that pulls up to 1,500 public posts from the past year and has Jev rate each one, tallying news, ads, jokes, and clickbait into a shareable card.

A free no-signup demo that turns any question into Yes, No, or Maybe by calling jev-latest through TypeSafe's System One API, with live web search for questions that depend on current facts.

A hosted checker and public API that takes a pasted software idea and returns a Jev verdict with success potential, backed by a task guide and a POST /api/fit endpoint.

A live Val Town demo that re-asks 16 typed judgments about your text in a single API call on every keystroke, covering traits like passive-aggressive, AI-written, tone, and urgency.

A semantic mapping playground where you choose any two concepts as axes, add words or phrases, and Jev places each one by how strongly it relates to both axes.

A community playground with over a hundred use cases, games, and model challenges, with editable prompts and side-by-side comparisons.

Get an API key, manage models, and try the playground: three walkthrough lessons plus realistic use cases like resume screening and ticket routing.