Projects built with Jev

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Focus Rail train routingThis made me try a different experiment: Can Jev play a game in real time? In my new game, Focus Rail, Jev has to track multiple moving trains and route each one to it's correct station. There is no route solver or fallback autoplayer. Jev chooses the switch settings itself.benkigera

GODMODE civilization simulatorI used Jev to give a tiny civilization six minds. Then I played GOD. Kindness earned trust, Tyranny sparked rebellion and an apology didn’t convince everyone. Jev decides how each faction reacts and the simulation brings it to life. Try GODMODE in replies ⬇️ @typesafeai #jevGrover

Dino: Jev vs GPT vs humanGot @typesafeai jev-latest access today So I made jev play the dino game against a gpt-5 model and a real human and the results are shocking!!Priyansh

A webpage becomes a fight sceneJev can generate a fight scene on your webpage. It asks each block: floor, button, or ignore? Then each hunter asks: chase, wait, flank, or retreat?Anson

Jev vs OpenJev in an FPSMade Jev fight OpenJev in a first person shooter.Neel Patel

Byte predicts rock-paper-scissorsCan Jev read a human? Play rock paper scissors against Byte. Every round he predicts your next throw before you make it, then plays against that read. His move is committed before you pick, so he can't change it after. Stakes settle over Ark. Try it 👇Carlos Marques

Jev beats Super Mario Bros.Jev beat Super Mario Bros. Every moment, the simulator returns structured data of the game's current state, such as Mario's position, nearby enemies, and terrain, and simulates possible actions like jumping and running. Jev returns a probability distribution for the next chosenIshu Agrawal

Jev Golf: flip the decisionCan you make an AI change its mind by deleting just two words? That’s Jev Golf. Jev reads a sentence and makes a decision. Your job is to flip it, with as few cuts as possible. 10 holes. Can you beat par?Rui Sousa

Lifelike autonomous villageis a small village that runs itself, streamed live to your browser. Five families forage, farm, trade, gossip, raise children and dogs, and take their chances in the woods. Every judgment call a villager makes comes from Jev,Dushyant

Directable video game NPCsMy first experiment with Jev from @typesafeai. "Playable" video game NPCs. Tell one to explore, gather resources, or build a house. Override its directive and watch it change course. The NPC's next action choices and probabilities are visible live.David Parks

Jido agents play tic-tac-toeJido Jev + ReqLLM playing Tic Tac Toe Each agent makes Jev calls to determine their next move, pretty fun! Now time to scale up ...Mike Hostetler // Actors & Agents on the BEAM

Five RuneScape bots level upJEV Plays Runescape Set up Jev on an 2004 OSRS Server running 5 bots at once. The goal? Highest total level possible. Will be optimising this to let them start PVP'ing soon. @typesafeai @CompleteSkeptic @maxbittkerNick D

Rank every Pokémon by any questioni built a website that ranks all 1,025 Pokémon by literally any question you type, using jev it thinks mimikyu is most performativearjun ✧

RTS roulette playtestingjev is insane 🤯 It played our RTS roulette game so well it exposed a balance bug (basically unloseable for the grindy, low-risk playstyle). Now even jev can lose lol. All tests cost less than a cent. Legit tool for playtesting.Nico Saraintaris

Jev's Dojo fighting coachLet Jev roast your fighting habits 👇Vansitha

Pong model face-offJev vs GPT-5.6 Sol and Claude Haiku 4.5 at Pong. The ball moves when the model decides. Jev (@typesafeai, via @vercel AI Gateway) answers in about 200ms and makes generalised realtime intelligence possible. Awesome fast 🚀 Try it out - bit of Friday fun ->Matthew O'Riordan

Solving NYT ConnectionsUsed @typesafeai's Jev model to automatically solve the @NYTConnections puzzle. Was a lot of fun trying to adjust the model to the task. Results appear to be inconsistent. In this recording, it took 3 mistake. Other runs failed, and one got it with 1 mistake.yehudab

Flappy Apex plays itselfThat’s Jev playing Floppy Apex, passing the previous best score and not thinking of stopping anytime soon 🏆 It was wired up by Apex via Appduct, with some adjustments made in Fable. @AgentConfSzymon Chmal

Pigeon target-shooting gameCrazy!! I made a pigeon shooting game for jev🤯 it tracks where the target is and shoots. bye bye latency going to test for chessYaseen Ammaar

Fight Jev with live decision probabilitiesFight Jev and see who's actually better. Integrated @typesafe_ai 's Jev model to control the enemy in real-time. You can see the live probability of every decision it makes right on screen before it strikes.Taufique

A run at the Pokémon LeagueTrying to get JEV (@typesafeai) to beat the Pokémon League in Pokémon Gold (HGSS). Let’s see if it can become a Pokémon Champion 🏆 UP DOWN LEFT RIGHT A Bjoey

Three Jev bots in an FPSI put 3 JEV bots inside a FPS game.Tommy J. Vedvik

Expert Minesweeper: Jev vs MistralJev vs LLM (Mistral Nemo) playing minesweeper in Expert mode. Trying to push it to play a 200x200 board.Vino

Fifty Wordles at oncejev played 50 wordles at the same time. 49 wins. 3.78 guesses average. 15.8 seconds. 4 cents. the one it lost was TATTY. it burned 5 guesses on tangy, tacky, taffy, tally, tabby. it got trapped exactly like a human does. peak AGIAhmed Gagan

Jev plays Clash RoyaleMade Jev play Clash Royale and actually won a match.Amrit Nigam

Jevton: a town of 120 peopleWTF !!! I pushed @typesafeai to a break neck decision making frenzy and it held up its own. Insane I built a town where Jev makes EVERY decision and never writes a single word 🤯 Jevton 🏘️ 120 people, 7 roads, 20 businesses, a council, a newspaper Every hour Jev decides forChizi

Slay the Spire 2 in real timeI couldn't think of something original so here's Jev playing Slay the Spire 2 in realtime (1X speed). It gets through Act 1 in 9 minutes and cost just $0.015. The speed here is just incredible. It's like watching a speed runner. It didn't always make the best decisions andPranay Prakash

A Jev-controlled cityJev + GPT-6 Astra = INSANE GPT-6 Astra built this entire city from ONE prompt. Then I gave control of it to Jev. I wanted to test what happens when you combine a powerful coding model with a model designed to make tiny decisions extremely fast and cheaply. So I asked Astra toMaxim Oulitzky

Naruto street fighting against Jevmade a Naruto-themed street fighter game and played against @typesafeai’s Jev it made ~130 decisions in a 50s fight, barely registered any usage, and came very close to beating me. very impressed by its reaction time and use of special move (substitution jutsu).Kausthub Jadhav

Jev attempts Resident EvilSo @typesafeai Jev knows how to shoot and dodge, but can Jev survives against zombies in 3D space??? I had Jev played the original Resident Evil to see how far Jev could go. This was an extreme case. 3D space, understanding objectives, fight off enemies, doing puzzles, etc.Jack Vinijtrongjit

Every Pac-Man move chosen by JevBuilt a Pacman where every single move is decided by @typesafeai jev 👾 Every tile, Jev gets what is around Pacman and returns a direction, strategy, danger score, flags for trapped, committed, regret. That decision moves the tile. Finally an innovative model after a long time.Nesan Selvan

Atari Pong with one structured questionHad to try Jev on Atari Pong. 🏓 I rewrote one structured question to this classic idea, and Jev went from missing the ball to this: 1 point scored, 0 lost in a 33-second run. Next experiment: can a teacher model improve that question from gameplay experience?Ming-Cheng Ho

Pokémon FireRed Elite Four runJev by @typesafeai is amazing! i let it play pokemon firered, and it was able to beat elite 4 with a party of level 40 pokemons. all under 0.03$Anas Khan

Tetris with typed landing choicesI built Tetris where an AI model makes every move, but it's not an LLM. Jev (TypeSafe's new "decision model") gets a list of legal landings and picks one. ~400ms per move ~1 cent per 100 pieces Can't hallucinate an illegal move, the schema won't let itSteve

Dungeon guards that change tacticsBuilt a dungeon where Jev controls the NPCs in real time. Watch B switch from pursuit to interception while A keeps chasing. Jev chooses the tactics; local pathfinding keeps the guards moving. Escaped with one heart left.Spencer Zhao

Jev plays Time CrisisAlright. So we know that @typesafeai Jev can fight, but can Jev shoot and avoid getting shot? I had Jev playing one of my favorite arcade shooter, Time Crisis, to test it out. I would say it did pretty well, but it's also because I also gave it a pretty good harness. With oneJack Vinijtrongjit