How does Sprint scoring work?

You race 10 cards against the clock while Jev's ghost runs the same cards. Your total is your time plus 15 seconds for every miss, and the lowest total wins. You can set the card count to 5, 10, or 20.

How does Versus scoring work?

Versus is 10 live rounds at the buzzer with 10 seconds per card (you can also pick 3, 5, or 15 seconds). Most right answers wins; each correct answer earns 100 points, with up to 50 extra points for speed to break ties.

Can I play with friends?

Yes. Live matches let you host or join a game where everyone gets the same 10 cards at the same moment — and Jev plays too.

Jev Cards — Race a 0.3-second AI model on picture cards

Jev Cards is a browser-based visual quiz game where you race against Jev, TypeSafe's decision model, on the same picture cards. The deck covers 490 picture cards across themes like fruit, flags, maps, chess, and illusions, and Jev reads each picture and question in about a quarter of a second — returning a probability for every answer option (or a bounding box for 'tap the place' cards) in a single call. You can compete in three solo modes (Sprint, Versus, Streak) or host live matches with friends where Jev plays too, with leaderboards tracking results. As of now, Jev has won 5,229 of 6,785 recorded games, so beating it is genuinely hard.

Key Features

Race an AI opponent on picture cards

Jev sees the same picture you do and answers in about 0.25 seconds, giving you a relentlessly fast benchmark across 490 cards.

Sprint mode

Race through 10 cards against the clock with Jev's ghost running the same cards. Lowest total wins: your time plus a 15-second penalty for every miss. Card counts of 5, 10, or 20 are selectable.

Versus mode

10 rounds played live at the buzzer, with 10 seconds per card (3, 5, 10, or 15 second options). Most right answers wins; scoring gives 100 points per correct answer plus up to 50 bonus points for speed to break ties.

Streak mode

See how many cards you can answer in a row before your first miss, with Jev playing the same cards. The longer run of right answers wins.

Live matches with friends

Host or join a live match where everyone gets the same 10 cards at the same moment — and Jev plays too.

21 card themes

Cards span animals, art, charts, chess, colors, counting, flags, food, geometry, illusions, landmarks, logic, maps, math, music, nature, objects, reading, science, sports, and symbols.

A purpose-built decision model, not a chatbot

Jev 1.14 reads the picture and the question and returns a probability for every option — or a box for 'tap the place' cards — in one call. It never writes text.

Leaderboards and stats

Track your results against Jev's overall record (5,229 wins out of 6,785 games so far) and compete on leaderboards.

How It Works

Pick a mode

Choose Sprint (racing a ghost), Versus (buzzer rounds), or Streak (unbroken runs), or host/join a live match with friends.

Answer the same cards as Jev

You and Jev get identical picture cards. Jev reads the image and question in one call and returns probabilities for each option — or a bounding box for tap-the-place cards.

Score by mode rules

Sprint totals your time plus 15 s per miss; Versus awards 100 points per correct answer plus up to 50 speed bonus; Streak counts your longest run of right answers.

Pros & Cons

Pros

Genuinely fast opponent: Jev answers in roughly a quarter of a second, making every race a real challenge
Three distinct solo modes (Sprint, Versus, Streak) plus live multiplayer with friends
Transparent, clearly explained scoring in every mode
Wide variety: 490 cards across 21 themes from chess to illusions to maps
Adjustable difficulty pacing — card counts (5/10/20) and Versus timers (3–15 s) are configurable
Honest public win record showing Jev's actual performance against players

Who It's For

Best for

Trivia and puzzle fans who want a fast, consistent AI rival
Players curious about how they stack up against a machine-vision model on visual tasks
Groups of friends looking for a live, simultaneous quiz competition
People who enjoy short, replayable challenge formats like streaks and time-attack runs

Not ideal for

Anyone expecting a conversational AI or open-ended question answering — Jev never writes text
Players who want long, narrative, or story-driven quiz experiences

FAQ

What is Jev Cards?

A visual quiz game where you race Jev, TypeSafe's decision model, on the same picture cards. The deck has 490 cards covering themes like fruit, flags, maps, chess, and illusions, playable in Sprint, Versus, and Streak modes or live matches with friends.

What is Jev?

Jev 1.14 is a decision model built by TypeSafe. It reads the picture and the question and returns a probability for every option — or a box, for 'tap the place' cards — in one call. It never writes text.

How fast is Jev?

Jev answers in about a quarter of a second per card, so in timed modes you're racing against a nearly instant opponent.

Can I actually beat Jev?

Jev Cards