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Show HN: Jev Cards, Can you beat a vision model at a picture quiz?

43 points • by totisjosema • today at 3:11 PM • 16 comments • view on HN

I built a quiz game around TypeSafe's new Jev model, which has vision capabilities. Jev looks at a picture and a question and picks an answer (or taps a place) in about a quarter of a second.

I've always loved quiz games and thought this would be a fun way to see what it can do and how fast it is. I made the cards from scratch, and Jev gets exactly the picture you see. More cards will come over time.

Play against Jev on your own (there's a leaderboard for each mode), or start a live match and challenge your friends, with Jev as one more player.

The code is open source, so feel free to build your own game or make more cards that I can publish.

Play: https://jevcards.com Code: https://github.com/Jose-Sabater/jevcards (the newest cards stay private for a while)

Disclaimer: I ran Jev through both TypeSafe and Opper, and made the cards through Opper's vision models and Claude Code. I work at Opper, but jevcards is open source and free to play.


Comments

geooff_ • today at 5:45 PM

I "Lost" to Jev while getting 10/10 questions and it got 8/10. Interesting scoring?

jrflo • today at 4:39 PM

Very cool demo! Although I feel that incorrect answers should be penalized more. For instance- I got 100% in about 45 seconds on the sprint. Then, I clicked through as fast as I can (only limited by finding the right targets) and got a score of 42s, technically better than my first score but I only got 20% right.

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semiquaver • today at 5:50 PM

The first one I opened only gave me a single option to press and when I pressed it the app told me I was wrong and that Jev had pressed the correct button (which was invisible to me I guess?)

I saw several other questions where I pressed the right answer and the app scored me as wrong. Broken slop.

nextaccountic • today at 4:06 PM

Could you add an option to remove musical theory questions? I mean, I know Jev can ace those as well, but I can only click at random, that's unfun

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arjie • today at 4:23 PM

Would prefer if the audio button was at the top right of the page etc.

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coolThingsFirst • today at 5:45 PM

Wait a minute Orca is a Dolphin?

Damn.

logicallee • today at 5:36 PM

This was very fun! I enjoyed playing it. Thanks for sharing.

inerte • today at 3:49 PM

I got a lot of answers wrong (half of them maybe?), and the ones I got it right Jev was still faster.

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edaemon • today at 4:04 PM

Interesting. Jev is certainly faster but it was wrong quite a bit more than I was.

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casey2 • today at 5:27 PM

I thought I did terrible 5, but jev got 0 in a row. then the slopcoded app says "Jev has won 2,613 of 3,300 games, this one included."

Though if you need very quick answers obviously humans can't compete.

Actually on further thought after getting 15, if you've seen the exact problem before you can answer quickly, so the usefulness is diminished to problems that don't need to be 100% correct, need to be solved very quickly (even routing might not need to be this quick), problem form often changes, but is still general knowledge, and very low marginal benifet for 99% correctness over 50%