The Jev launch post
Diogo Almeida introduces Jev, TypeSafe’s structured decision model. Watch the launch film and explore the original thread for the model’s approach, examples and author-reported performance.
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Recent activityA FIELD GUIDE TO JEV / VOL. 01
The best of Jev. Real projects, practical guides and ideas from across the internet.
Diogo Almeida introduces Jev, TypeSafe’s structured decision model. Watch the launch film and explore the original thread for the model’s approach, examples and author-reported performance.
TypeSafe’s official launch announcement introduces the lab and points builders to Jev. It includes Diogo Almeida’s launch film and original introduction.
TypeSafe announces public access to Jev without a waiting list. The official console is the starting point for trying typed decisions in your own application.
TypeSafe highlights Jev’s typed-output approach: applications provide state and questions, then act on probabilities, choices or scores. The linked announcement also covers the Venice API integration.
Start with the Launch Post. Explore four official signals.
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AI-assisted summaries and translations. Check original sources for context and performance claims.
Real-time virtual try-on experiment using Jev to select and change outfits based on user input and transcript analysis.
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A community post describing a system that matches one candidate to 400 companies with a confidence score in 12 seconds.
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Jev generates 100 images from sources like NASA and The Met based on a single prompt.
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A community experiment using Jev to analyze social media posts and determine effective content strategies.
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A community post describing Jev's use for analyzing competitors' ads and generating creative shortlists.
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Can a System One model steer music? Jev picks the plan (enums only); code renders sheet, audio and MIDI.
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A creative project using Jev and other tools to generate digital art, specifically a painting of the Golden Gate Bridge.
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Jev demonstrates potential for innovative UX/UI design through language model integration.
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Using Jev on Cloudflare Workers to improve search and content tagging efficiency on keep.md.
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Uses Jev to conduct a musical orchestra in real time through a demonstration project.
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A livestream analyzing Jev's architecture for JSON-predicting models.

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A method for expressing emotions through sound-based communication.
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A tool enhancing zsh autosuggestions with Jev-based ranking instead of prefix matching.
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A tool that automatically locates and retrieves invoices from any website using Jev's capabilities.
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A method for creating pixel art through iterative sketching and refinement using Jev and DeepSeek.
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Jev generates piano music by selecting notes and chords based on input sequences.
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A 2-minute song composed by Jev-thoven using first principles.
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A user creates music by giving real-time voice commands to Jev.
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A community post exploring Jev's role in improv judging, presented as a creative experiment.
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Fork of OpenPoke where the yes/no decisions go to Jev instead of Claude Sonnet, with a same-inputs A/B against the replaced LLM decision and a 43,776-request adversarial run on the injection gate.
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Moved hard-coded rules to Jev for faster AI processing and reduced costs in projects like aiseotracker and linkdr.
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A system that quickly captures user interface flows on demand, enabled by Jev's fast processing capabilities.
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A 4-minute video explaining what Jev is and its limitations.
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A SillyTavern extension that evaluates replies before they are displayed, collected for the creative shelf.
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Go client for TypeSafe's System One API and its model Jev: typed judgments and calibrated probabilities instead of generated text.
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A live Bluesky feed with real-time emotion detection and user avatar matching.
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A process using Jev to filter and select assets, then generate ad creatives with DeepSeek and Higgsfield.
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Visual-Jev is a GitHub research project that makes decisions based on images rather than text descriptions of visual content.
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A Chrome extension using Jev to detect and skip YouTube sponsor segments in real-time.
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A developer project offering a Chrome extension to blur low-value LinkedIn posts, collected for the creative shelf.
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Uses Jev to play Pokémon Showdown with mixed results, demonstrating its decision-making capabilities in a game context.
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Semantic GitHub PR labels using Jev's typed decisions, with conceptual scope instead of line counts.
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An experiment using Jev to transform simple English into elaborate prose in real-time during writing.
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Explains Jev's advantages over older LLMs in decision-making and building.
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Jev controls live 3D character expressions with real-time decision-making.
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Inspired by TypeSafe Ai, Ask a local LLM typed questions, get calibrated probabilities instead of text. Structured output without generation or parsing. MLX / Apple Silicon.
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A tool that analyzes WeChat threads for emotion, intent, and reply quality.
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Head-to-head test at validating local event listings, with cost and latency.
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A voice-controlled interface for Figma utilizing Jev, demonstrating low-cost AI integration for design tools.
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Steve Krouse's playable 16-judgment demo and video.
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A developer project using Jev to score sales calls, collected for the creative shelf.
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A community post listing Chinese open-source Jev clones with technical specifications.
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Put a live Jev (TypeSafe) meter on any video: every sentence scored, rendered as a 16:9 edit.
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Mini-Jev: what a Jev-style typed-decision interface looks like on a frozen Qwen3-4B — read the option letter's logits instead of generating JSON. Preregistered experiment, results, teaching bench.
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Video comparison against a structured-output LLM baseline.
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Technical SEO audit cost study from Boring Tools Kit where Jev ranks striking-distance fixes and content gaps by calibrated probability.
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A GitHub project developing a screen overlay to identify manipulative interface patterns.
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Short video explainer of how Jev's typed-decision loop works.
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Claude Code plugin that scores review findings, debug hypotheses and design options with TypeSafe's Jev — calibrated probabilities instead of one more opinion.
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