X · by silentguyy66

TypeSafe’s System One, for decisions

A recap.

silentguy

@silentguyy66

Grok Bot does the job, Jev decides where the job goes next That's the ai company split: a work model and a decision model In this free 22-min tutorial they walk through jev, typesafe's "system one" model that makes decisions instead of chatting You ask one question, Jev answers from a fixed menu: noul, choice, score The demo: customer messages in, frustration score out. usable right in code Not another chat model, it's the fork in the pipeline Grok Bot keeps generating Jev keeps deciding Humans keep the approvals The teams wiring in that third layer are quietly becoming one-person companies Save this before your competitors put a decision layer between their bots

Sep 23, 2026 · 19 likesOpen on X

silentguyy66 recaps Jev as TypeSafe’s System One model for decisions.

Open the source

OpenRouter’s Ori Eval

Speed: >5× the next fastest

nader dabit

@dabit3

Also have been playing with @typesafeai Jev, insane! So many immediate use cases and new apps are possible. What a time to be a builder! Sharing some experiments here starting with: Keystroke oracle / predictive launcher: Your launcher ranks by aliases, fuzzy match, and habit. Jev reads intent: type "the pdf I just downloaded" and the newest PDF is already the top hit with a full confidence on every keystroke, in ~100 ms

XBenchmarks and evals

Keystroke oracle

ILIAS ISM

@illyism

Now using @typesafeai Jev in http://aiseotracker.com, http://linkdr.com, http://genppt.com, etc AI ends up vibe coding so much AI regex slop if you don't read the code, so I can finally move all this hard-coding to Jev and it's insanely fast! Also for regular LLM calls, it is around 10x faster, 50% cheaper

XBenchmarks and evals

TypeSafe’s System One, for decisions

More like this

OpenRouter’s Ori Eval

Keystroke oracle

Hard-coded rules moved to Jev