Hacker News launch thread
1,800-point thread debating whether typed decisions replace LLM calls for classification, routing, and scoring.
Articles & threads
Coverage, write-ups, and X threads. Browse the collection in Jev Library.
48 entries in the current community snapshotArticles & threads Articles & threads AINews: Jev, a System One Model that only decides
Latent Space's launch-day roundup: over 100x faster and 200x cheaper than small frontier LLMs.
Articles & threads TypeSafe AI debuts model for machines that plays Doom
The Register on the launch, the Doom demo, and the $40M seed round.
Articles & threads Jev: System One models explained
The Neuron's explainer on AI decisions without a chatbot.
Articles & threads Mini-Vibe Check: Jev judged everything I have written in 0.7 seconds
Every's Mike Taylor runs his whole archive through Jev.
Articles & threads Jev: The Language Model That Will Not Talk
Anthony Maio's essay on what a model that cannot generate text is for.
Articles & threads TypeSafe Jev: the first decision-only model class
Release-week technical roundup: API, evals, adapter, and skill.
Articles & threads He says he co-invented ChatGPT. His new AI will not write a word
dev.to walkthrough of the Vercel AI SDK evaluate integration.
Articles & threads Typed decisions, not chat
Independent walkthrough separating TypeSafe's published claims from public evidence.
Articles & threads What is Jev?
Short practical intro with a Python ticket-triage example.
Articles & threads AI that does not talk
Practical guide: playground, Python and JS SDKs, raw HTTP, and the agent skill.
Articles & threads Jev vs Mistral and Gemini for event validation
Head-to-head test at validating local event listings, with cost and latency.
Articles & threads TypeSafeのJevを正しく驚く
Japanese walkthrough of what Jev is and is not.
Articles & threads jev 同士に五目並べで対戦させた
Jev vs Jev gomoku with source and timing logs.
Articles & threads Launch thread by Diogo Almeida
TypeSafe's founder on why RLCD-trained decision models are a shorter path to value than chat models.
Articles & threads Computer use built on Jev
Aaron Levin: 155x cheaper than Opus 5, about 20x faster, and it generalizes across operating systems.
Articles & threads Browser Use + Jev
Gregor Zunic's flight-search demo with a dynamic DOM action space.
Articles & threads Jev Typewriter launch
Steve Krouse's playable 16-judgment demo and video.
Articles & threads Model router built with Jev
Ephraim Duncan's demo where Jev decides which model should serve a request.
Articles & threads Jev vs Qwen on Cerebras
Video comparison against a structured-output LLM baseline.
Articles & threads Internal classifier field note
Matched-precision comparison against a private fine-tuned classifier.
Articles & threads Jev as an agent safety monitor
Test report using Jev to check each agent action first: most attacks caught, almost no false blocks.
Articles & threads Hide posts on X with natural language
Marcel Pociot's browser extension that collapses posts based on a Jev judgment.
Articles & threads Jev plays Minecraft (r/accelerate)
Work-in-progress demo of Jev driving Minecraft, including fleeing zombies at night.
Articles & threads Vercel fx: Jev as a command safety reviewer
Guillermo Rauch: Jev reviews every fx command, faster and more accurate than a chat model.
Articles & threads Stagehand + Jev browser use
Observe the accessibility tree, Jev chooses the next action, Stagehand executes.
Articles & threads OpenCode browser use powered by Jev
Preview of fast browser use with Jev and OpenCode's browser CLI.
Articles & threads Ground Truth news-framing extension
Browser extension that classifies an article's framing, type, topic, and loaded language with Jev.
Articles & threads Jev in a Grammarly-style Mac app
Desktop writing app using Jev for fast structured writing judgments.
Articles & threads Kalshi prediction-market bot
Jev trades 15-minute and 1-hour BTC, ETH, and SOL markets on Kalshi.
Articles & threads Model router CLI
Task plus subscription list in, Jev picks which model or agent should handle it.
Articles & threads Support ticket classifier
Jev labels category, urgency, and human-versus-auto handling for support tickets.
Articles & threads ConsoleChaosRacing driven by Jev
Racing UI wired to Jev driving decisions.
Articles & threads skillbox + Jev skill routing
MCP skill router where Jev picks the relevant skills instead of a long agent search.
Articles & threads jev-rabbit PR review bot
Work-in-progress PR reviewer with plain-English Jev rules.
Articles & threads AIAvatarKit turn-end gate
Voice-dialog turn-end detection using Jev scores after speech.
Articles & threads Early Jev tools roundup
Thread cataloguing the first wave of Jev tools: MCP servers, routers, reviewers, and browser agents.
Articles & threads Jev: System One models explained (DataCamp)
Third-party write-up of the System One primitives, pricing, and vendor workflow evals.
Articles & threads DuckDB Jev classifier
DuckDB extension that classifies rows in CSV, Parquet, or DuckDB tables with Jev, about 10 seconds per 1,000 rows.
Articles & threads Hook panel A/B tester
Near-real-time scoring of TikTok and Instagram hooks against about 100 personas.
Articles & threads Jev gomoku harness
Local tactics shrink 225 moves to about 40 candidates, then Jev picks among tiered options.
Articles & threads ViZDoom Jev agent
Two decision channels on ViZDoom, navigation at 5 Hz and combat at 12 Hz, with an 18-kill test run.
Articles & threads StarCraft Brood War WASM MCP demo
Brood War in WASM exposed as an MCP server, with Jev playing and still losing to a Zerg rush.
Articles & threads Spanish AEPD corpus test
Jev versus a hand-built regex on 544 public data-protection resolutions: 98.2% agreement for about five cents.
Articles & threads Tabletop MMORPG action mapper
Eval of Jev turning free-text player intent into typed server actions: 96% agreement, 317 ms median.
Articles & threads Jev in 34 seconds
Short video explainer of how Jev's typed-decision loop works.
Articles & threads Wiki-link clicker demo
Page-level demo where Jev picks which candidate link to click toward a goal.
Articles & threads One judge call vs twelve dimension scores
One direct Jev question per row against 12–14 Jev-scored dimensions with locally fitted weights on three classification tasks: 5,477 test rows, 25,174 Jev calls, $1.43. Decomposition wins on Japanese NLI (0.9076 vs 0.8373) but flags about 25× more hard benign rows as attacks (37.2% vs 1.5%).