Joon Lee

Imagineering a better world

🏆x8 Hackathon Winner & Patent holder

[Andy T @Andy_AJT]

Announcing the next Codex Community Meetup - London. Monday 8th June.

Last Codex London Meetup had 1000+ registrations & almost 200 of the most cracked agentic engineers from the hottest startups and biggest companies in London chatting about agentic engineering.

Link below 👇

[Joon Lee @ask_joon]

@Andy_AJT Airpods are kinda practical. Otherwise you'd need to carry a mic

[Joon Lee @ask_joon]

One of the best event I've been to in a while! Thank you @Andy_AJT

[Andy T @Andy_AJT]

Last weeks London Codex Meetup was star studded with epic builders ⭐️

45 mins hacking and 4 top demos walked away with 1 year of chatGPT Pro sub to keep Codexmaxxing

Congrats @steveruizok @natal1e_c @ask_joon @george__wing

Who’s ready for another Codex Meetup?

[Joon Lee @ask_joon]

@natal1e_c @Andy_AJT @reach_vb @romainhuet 🥲

[Nat @natal1e_c]

turned up to an exciting codex community meetup, ended up joining a surprise 45-minute hackathon and won a chatgpt pro subscription for a year

prompt enhancer works everywhere on device.

https://t.co/rzv1QgONGz

thanks so much for organising! @Andy_AJT @reach_vb @romainhuet

[Joon Lee @ask_joon]

OpenAi has been cooking with codex. Since Peter joined they have been integrating computer use/tool use features into codex plugin.

I won a 1 year pro subscription from the 1 hr hack

Thanks you for organising such a wonderful event! @Andy_AJT @romainhuet @reach_vb

[Joon Lee @ask_joon]

@cluckrush @colosseum @CapinUK @SuperteamUK good luck you crazy degens!

[Joon Lee @ask_joon]

@AlexChhk @ohhdanqi I'm telling you shadow can be big!

[Joon Lee @ask_joon]

@jdthewlis @pixelsocieties @ktoya_me It was great to see you! @jdthewlis

[Joon Lee @ask_joon]

@ktoya_me @tokengobbler +1

[Joon Lee @ask_joon]

@ktoya_me loool

[Joon Lee @ask_joon]

I've been invited to the "To The Americas" Hackathon by the @unicorn_mafia!

120 of Europe's best builders.
$50k+ in prizes.
1 winning team to SF.

Time to cook. 🚀

Pydantic; Render; Cognition; https://t.co/cYkWlhKcrJ;The Residency; Expedite

p.s. love the sprite @fatemallk

[Joon Lee @ask_joon]

Synthetic humans are coming 🤖🤖🤖@pixelsocieties @Hrdlickas @leaferle

[WIRED @WIRED]

The developers of Pixel Societies are using AI agents to simulate social interactions. It's an attempt optimize the process of choosing new colleagues, friends, and even romantic partners. https://t.co/FxdcLvTnXr

[Joon Lee @ask_joon]

Ai Hinge? @Hrdlickas @leaferle @pixelsocieties

[Pixelsocieties @pixelsocieties]

We built AI Hinge. Thanks you @WIRED @JKFruit for checking it out!

https://t.co/zxQCPm8Wqs

[Joon Lee @ask_joon]

Three friends walked into a hackathon with a dumb idea: what if we put everyone at the event into a pixel world and let AI versions of them figure out who should meet who? https://t.co/gspZZebV4L

[Pixelsocieties @pixelsocieties]

This is our vision to bring people closer together in the ai age: https://t.co/dzWhanKpQn

[Ibragim @ibragim_bad]

📟 Meet SWE-rebench-V2: the largest open, multilingual, executable dataset for training code agents!

We at Nebius AI R&D are releasing the biggest open dataset of RL environments for training coding agents. We built an automated pipeline to extract real-world tasks at scale, and now we are sharing everything with the community. This release is designed for large-scale RL training.

What’s inside:
> 32,000+ executable tasks — every task is based on a real-world issue and comes with a pre-built Docker env.
> 20 programming languages — moving beyond Python-only datasets (including less-represented ones like Lua, Clojure, etc.).
> 120,000+ extra tasks derived from real pull requests.
> High quality — tasks are filtered and labeled using an LLM ensemble. They are also enriched with metadata and tested interfaces to ensure solvability.

We are also dropping a technical report with all the details on our extraction pipeline and model evaluations.

📄 Paper and dataset: https://t.co/dMQ0kLSqbi

👾 Discord (we are online there for any feedback/issues): https://t.co/2rJoX8pp16

We are open to research collaborations — feel free to reach out!

🔁 If you find this useful, please help us spread the word by sharing

[Joon Lee @ask_joon]

@tokengobbler Louis you are one of the most talented founders I know! Huge respect for the effort and sunsetting this in the right way.

[Joon Lee @ask_joon]

@KenjiPhang What happened, bro?

[Fatema 🦄 @fatemallk]

no other way to celebrate 1 year of @unicorn_mafia than to deploy a virtual world with our pixel avatars running in parallel to an epic party @pixelsocieties