Rex Ledesma

research infrastructure @poolsideai • previously @dagster

[Rex Ledesma @rexledesma]

i am back on my grind to challenger as your favorite one trick

[Rex Ledesma @rexledesma]

@sidpshanker congrats sid!!

[Rex Ledesma @rexledesma]

@Sauers_ it scored very high on our whimsy eval

[Rex Ledesma @rexledesma]

Poolside Summer is just starting 🏖️

[Poolside @poolsideai]

Today we’re releasing the weights for Laguna M.1,
our most capable model to date, with a 256K context length.
Both base and post-trained checkpoints are now available on Hugging Face under Apache 2.0.

[Herrington Darkholme @hd_nvim]

preview of ast-grep's upcoming new feature for AI agents: outline

it lists the structure of the file without reading it

[Rex Ledesma @rexledesma]

@thdxr lots of cope unfortunately, but I'd like to say that it's great for innovation. very ripe for creative destruction

https://t.co/JJ7TR5xtkP

[Rex Ledesma @rexledesma]

sadly, it is a form of cope. many people want a semblance of control as capabilities collapse into the models

[Rex Ledesma @rexledesma]

sadly, it is a form of cope. many people want a semblance of control as capabilities collapse into the models

[Adam Wathan @adamwathan]

Feels like we're all just building "things for building other things" and not a lot of "things" anymore.

[Rex Ledesma @rexledesma]

@charliermarsh i love it too, it's so great for centralized control https://t.co/ErXZIWVD2G

[Rex Ledesma @rexledesma]

when maintaining a python monorepo, having ruff + pyrefly + ast-grep is such a blessing

i am so happy when the organization works in a sensible subset of the language

and when there is business logic that ends up being bad™️ ... ban it with ast-grep

agents, rejoice

[Rex Ledesma @rexledesma]

@fleetingbits reminds me a lot of nadia’s idea machines

[Rex Ledesma @rexledesma]

slow, steady, then all at once 😍

[Rex Ledesma @rexledesma]

does anyone know if this is a good thing?

[Rex Ledesma @rexledesma]

please try to enjoy each token equally, and not show preference for any over the others.

[Poolside @poolsideai]

Laguna M.1 is now top 20 on @OpenRouter by weekly tokens served.
Please keep on cooking.

[Poolside @poolsideai]

Laguna M.1 and XS.2 now support 256K context.

Laguna M.1 is now live with a 256K context window on the Poolside API and OpenRouter.

With this update, it reaches 45.8% on Terminal-Bench 2.0, improving long-horizon performance.

Laguna XS.2 is also moving to 256K today, with the updated config already available on Hugging Face.

Both models remain free to use.

Over 1T tokens have been processed since launch 4 weeks ago. Excited to see what people build with the longer context window.

[Rex Ledesma @rexledesma]

Check out the full Laguna technical report! We talk more about our magical Model Factory system that powers @poolsideai :)

https://t.co/ef6D3h4MGj

[Poolside @poolsideai]

Today we’re publishing the technical report behind Laguna M.1 and Laguna XS.2.

This report opens up more of what went into them: Model Factory, pre-training data, distributed training, post-training, agent RL, quantization, and evaluation.

https://t.co/RWk2F9IrAI

[Rex Ledesma @rexledesma]

dagster mentioned

[Poolside @poolsideai]

Today we’re publishing the technical report behind Laguna M.1 and Laguna XS.2.

This report opens up more of what went into them: Model Factory, pre-training data, distributed training, post-training, agent RL, quantization, and evaluation.

https://t.co/RWk2F9IrAI

[Rex Ledesma @rexledesma]

On this day, last year. Thank you to @recursecenter for all the energy you've given to my life ❤️

[Rex Ledesma @rexledesma]

@gabriberton This will soon be handled at the type checker level. With pyrefly, you can enforce these as static type checks rather than enforcing it only at runtime through assert or jaxtyping

https://t.co/ZhJLVPMwck

[Bernát Gábor @gjbernat]

Just published my notes from this year's Python Typing Summit at PyCon US. If you've ever been curious what one of these is like from the inside: intersection types, constraint sets in ty, tensor shapes in Pyrefly, Guido on direction. 🐍📝 https://t.co/AbGxwrbTlp #PyConUS

[Rex Ledesma @rexledesma]

visiting my french sibling coop 🐺