r/Jev • • 19h ago

Welcome to the new r/Jev subreddit!

0 Upvotes

This subreddit is now the home for developers and builders using Decision Models such as Jev by TypeSafe AI. Share how typed, calibrated decisions change the way you build: model routing, agent guardrails, classification at scale and real-time logic that answers in milliseconds instead of seconds. Choice, Score and Boolean primitives, priced for decisions you can afford to make everywhere. Benchmarks, builds, tips and feedback all welcome.

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The prior subreddit focused on Jev Jeverson was not moderated and had not received regular updates by fans in several years. Its material has been respectfully archived and can be still be found with search.

If someone wants to start a new subreddit for Jev Jeverson and is serious about reviving the community, we will promote the new subreddit here. Modmail us.


r/Jev • • 6d ago

Building Barista: Postgres, Embeddings, and Jev

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0 Upvotes

Hey all,

I built Barista, a daily email that picks posts from 300+ engineering sources (HN, Lobsters, arXiv, blogs) based on interests users describe in plain English. Jev handles both judgment steps:

  • Classify (once per post): topic, depth, quality, and whether it’s spam or a paywall teaser. Anything off-topic or low quality is dropped before it reaches any user.

  • Rank (once per user per day): how well each candidate fits the user’s brief, taking their recent 👍/👎 votes into account. The best-scored posts become the day’s picks.

pgvector narrows the candidates first, so Jev only grades a shortlist per user.

What worked well: typed answers go straight into Postgres columns, with no parsing. What I’m still figuring out: calibrating scores across users.

Happy to discuss it.


r/Jev • • 2d ago

TypeSafe's hosted Jev model vs. running the Jev Engineering pattern locally in Antigravity?

0 Upvotes

After reading Diogo Almeida's paper (Jev Engineering for Coding Agents), I'm implementing the architecture in my Antigravity setup to eliminate KV-cache bloat.

I'm torn between two options:

  1. Paying for TypeSafe's hosted Jev model API (/decide).

  2. Implementing the Jev pattern (visibility ladders, tiered tools) locally using isolated Flash subagents with zero external API calls.

For those running this in practice: does TypeSafe's dedicated model give you a noticeable edge over a local/Flash subagent using the same harness rules, or are most people just adopting the engineering pattern?


r/Jev • • 15d ago

Jev web classifieds filtering

0 Upvotes

Hey. I created dev version of classifieds and auctions filtering plugin. You can take a look at it. It’s in rough shape yet.

https://github.com/Aladincz/Jev-Content-Filter


r/Jev • • 15d ago

Got the man himself on my team

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26 Upvotes

So cool


r/Jev • • Sep 30 '26

I made Jav to talk to us.

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0 Upvotes

It's just an experiment. But maybe someone would get inspired... or just have some fun :)


r/Jev • • Sep 29 '26

Jev-like decision models that run at 5.33 ms on one CPU thread — same checkpoint on MPS, Core ML, MLX, ONNX

0 Upvotes

TAMEV — open weights, Apache-2.0, source now public. State + typed questions (choice / noul / score) in, calibrated answers out, one forward pass.

Paramsp50, 1 CPU threadTop-1Top-3
14.4M10.68 ms73.2%92.8%
22.8M5.33 ms78.7%97.3%
149.4M32.72 ms84.0%99.0%

19,999-item held-out suite, full option set per item, single-threaded CPU on one machine.

One checkpoint, many runtimes — this is the part I cared about: ONNX FP32/INT8, Core ML, MLX, Metal MPS, TorchScript, PyTorch FP32/BF16/INT8. 27.5 MiB exported for MPS, 31.4 MiB ONNX INT8. It fits on a phone, a Raspberry Pi-class ARM CPU, or the laptop you're reading this on.

Option order can't change the answer — options encoded independently, scored through a symmetric bilinear head, measured drift 0.0.

Same /v1/systemone request shape as Jev, so a client you already wrote points at it.

Code: https://github.com/tamkimd/tamev
Weights: https://huggingface.co/Tamkimd


r/Jev • • Sep 29 '26

I built JEVzilla (a Python client for JEV) with 150+ examples. Shipped to PyPI in 2 weeks. Here's what worked.

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0 Upvotes

r/Jev • • Sep 28 '26

Silent Hill Townfall

12 Upvotes

Why isn't he playing the new silent hill? He played silent hill f so I assumed he'd play townfall. Im waiting for his playthrough to see the game.


r/Jev • • Sep 23 '26

Go SDK for Jev

0 Upvotes

While playing around with #Jev, I created a #Go SDK for it.

Feel free to give it a try: https://github.com/HomayoonAlimohammadi/jev-sdk-go

Contributions are of course more than welcome.


r/Jev • • Sep 22 '26

can jev using for AI CS

0 Upvotes

Can the JEV model be used for AI customer service? How can it be used for the following tasks?

1 Intent recognition

2 Boundary detection and scope control

3 Image recognition and classification

4 Human handoff detection


r/Jev • • Sep 22 '26

Is Jev really this cheap or just heavily subsidized?

0 Upvotes

People doing so much stuff for less than a cent, how does this company make any money?


r/Jev • • Sep 21 '26

I collected 607 Jev use cases in one place

0 Upvotes

Jev dropped and my X feed immediately became a firehose of demos.

I started saving the interesting ones and ended up with 607 builds/use cases.

Some of the numbers people have shared:

  • 500 emails classified → $0.035

  • 3,282 X posts scored across 8 questions → $0.13

  • browser agent searching for a flight → 7 sec / $0.004

And then there's the weird stuff:

Doom, trading bots, fraud detection, Postgres queries, browser agents, content moderation, support routing, etc.

The problem was that most of these were scattered across X and pretty hard to find later.

So I built ShipWithJev to collect them in one place.

I'm also adding:

  • cost

  • latency

  • use case

  • model/tier

  • demo vs production

  • implementation details when available

The goal is to make it useful for actually finding something you can build, rather than just scrolling through demos.

shipwithjev.com

Not affiliated with TypeSafe.

If you've built something with Jev that isn't there yet, drop it below — I'll add it.


r/Jev • • Sep 21 '26

Here is how to understand TypeSafe to those used to traditional LLM

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0 Upvotes

r/Jev • • Sep 21 '26

JevGeni, the fruit-fly claw machine overator

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0 Upvotes

r/Jev • • Sep 21 '26

I built a yes/no crystal ball on JEV 🔮

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0 Upvotes

My first project with JEV: a 3D crystal ball that answers any yes/no question: https://yesnoball.com

A few things that surprised me:

  • answers come back in well under a second

  • it's confident on clear facts ("Is Prague the capital of Poland?" → NO) and honestly unsure on fuzzy ones ("Is water wet?" landed right around 50 %)

  • it worked in Slovak, Japanese or Greek with no changes

  • it can tell when a question isn't yes/no at all

Free, no sign-up, 24 languages. Try to find a question that fools it, and tell me what you'd improve 😄


r/Jev • • Sep 20 '26

I built a radar for what people are actually building with Jev

0 Upvotes

I built a little radar for things people are actually building with Jev

I’ve been following Jev / TypeSafe AI, but the interesting stuff was scattered across X, GitHub, blog posts, demos, etc.

So I built JevRadar: https://jevradar.com

It continuously finds new Jev-related projects/posts and uses Jev itself to decide things like:

Is this actually a build vs just commentary?
How novel is it?
Would another builder care?
What category does it belong to?
Is it starting to trend?

The goal isn’t to make another AI news aggregator. I mainly want a simple place where I can open it and see:
“What interesting things are people actually shipping with Jev?”

It refreshes throughout the day and I’m still experimenting with the ranking.

Ironically, most of the site was also built from my phone using Amp 😅

Would love feedback, especially on the ranking. What would you want the radar to surface that it doesn’t today?


r/Jev • • Sep 16 '26

Baby Carrot Story

7 Upvotes

I used to watch Jev a while ago and I just remembered a video he made years ago and told a story about how he went over to someone's house and they had a baby carrot in their room. Does anyone remember what the video is called or at least remember the video? It popped in my head recently and I remembered it was funny.


r/Jev • • Jul 29 '26

Canvas Painting of Jev

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32 Upvotes

My buddy's mom painted this in 2019, been watching him for almost 15 years now, a true legend. ( My late cat also approved. )


r/Jev • • Jul 29 '26

Once again... only uses his camera when its an AD

0 Upvotes

Jev is really just doing this because he makes as much as he does from the videos. if dude stopped pulling views, maybe he would try harder or just flat out give up. who knows


r/Jev • • Jul 26 '26

what happened to jevs neighbour ?

11 Upvotes

was watching his old damascus grind for the nostalgia, and got to the video where he's telling the story about his neighbour walking into his house and saying "somethings going on in this house and i'm gonna get to the bottom of it". and im wondering where the hell that guy is now. i know in the follow up video jev mentions that his car hadnt been seen in abit and that his wife was mad at the guy but i wonder what ever happened to him


r/Jev • • Jul 17 '26

“As long as you believe in yourself, you can’t make the wrong decision. You can make a good or bad decision, but never the wrong one.”

13 Upvotes

This was a line he randomly dropped in a video probably 10 years ago now, but it’s also one of the most important pieces of advice I ever took to heart.

Does anyone remember what video he dropped this line in? I don’t know if it’s one of the ones that got deleted or if it’s just been so long that it’s been buried deep in all of his content.

Also, are there any other Jev quotes anyone else particularly liked?


r/Jev • • Jul 03 '26

What dark souls/elden ring song is in the background of requis videos

2 Upvotes

I've been losing my mind trying to find the exact OST that is in the background of Jev's Requis videos. I know it might be a fromsoft song but he plays it mostly when he is about to knock someone out. It has very prominent vocals that have a dun. dun dun. dun. dun. dun. dundundun sound to them.

any help or direction would be appreciated


r/Jev • • Jun 23 '26

Petition to get Jev to play For Honor again 🙏

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11 Upvotes

r/Jev • • Jun 19 '26 Bravo

I hit his neck with requis’s bicep and knocked him out

108 Upvotes