Jay Hack (@mathemagic1an) 's Twitter Profile
Jay Hack

@mathemagic1an

Building @codegen. Tweets about AI, computing and dev tools. Previously did startups, @palantir. Not a pseudonym.

ID: 1395499471

linkhttps://codegen.com calendar_today01-05-2013 20:17:47

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John Bohannon (@bohannon_bot) 's Twitter Profile Photo

Ruh roh. Open-weight LLMs can quote nearly all of a Harry Potter book from memory. Lawyer up Meta. @afedercooper, Aaron Gokaslan, Percy Liang et al. spill the copyright beans. ~thread~ arxiv.org/abs/2505.12546

Nilag (@nilag_dev) 's Twitter Profile Photo

Jay Hack Linear Codegen And nowww i use heavily codegen, subscribed to codegen within an hour after it did perfectly 10 jobs, now orchestrating through linear sooo nice

Jay Hack (@mathemagic1an) 's Twitter Profile Photo

We're now merging 100% AI-generated PRs on a 90 million line Typescript monolith as of this morning. Bottleneck to agents like Codegen is no longer the agent's ability to grok large repos It's the infra for spinning up sandboxes etc. - "traditional" tech problems of scale

Jay Hack (@mathemagic1an) 's Twitter Profile Photo

With Claude 4, it implies we're on "level 4" of AI progress, similar to when GPT-4 was SoTA 4 is a low number. "We have so far to go" vibes. In reality we are on level ~7 of step function improvements since GPT-3 API released Give us higher version numbers, you cowards

Jay Hack (@mathemagic1an) 's Twitter Profile Photo

Weaker versions of this for smaller models has been known for a while and has always been a mindfuck All LLMs learn the same manifold, just rotated Gets us back to the OG stoner question, what if my “red” is not the same as yours? (They are isomorphic)

Akshay 🚀 (@akshay_pachaar) 's Twitter Profile Photo

Slack is my new IDE! I integrated @Codegen's AI Agents into Slack. Now, it lets me review PRs, ship new features, and create new projects—all directly from Slack using plain English. Idea to feature in seconds. Check this out👇

Jay Hack (@mathemagic1an) 's Twitter Profile Photo

ffmpeg is a good example of "CLICP" You don't need an MCP for many types of video manipulation, since Claude 4 et al are already fluent in ffmpeg manus.im has shown this among others. Existing CLIs should be used as default for expanding agent toolsets.

Jay Hack (@mathemagic1an) 's Twitter Profile Photo

The attack described here applies to any agent hooked up to Github, MCP or otherwise Codegen has implemented extensive security measures against this - very real issue with no go-to turnkey security solution

Tony Ennis (@tonyennis) 's Twitter Profile Photo

If I were an investor looking to invest in one of AI coding tools (including Cursor, Windsurf, Devin etc), I would be putting my money on Codegen They are building really novel and valuable stuff, and unlike the others are actually under hyped right now

Jay Hack (@mathemagic1an) 's Twitter Profile Photo

There should be a "langchain for sandboxes" There are many, many sandbox providers coming onto the scene and main blocker to adoption from code agents is lack of a standardized API Should support: ✅ CRUD operations ✅ Custom image specification ✅ Snapshotting