
Open-Sourcing Rebalancer: A Generic, High-Performance Library for Solving Assignment Problems
We’re open-sourcing Rebalancer, the assignment-problem solver that has been used to solve resource allocation problems throughout Meta for over nine years.
Every story published that day — lead first, then grouped by section.

We’re open-sourcing Rebalancer, the assignment-problem solver that has been used to solve resource allocation problems throughout Meta for over nine years.

Petal, the next step in Meta’s subsea innovation, will be the first subsea cable to deliver petabit capacity at transoceanic distances, connecting France and…

PLUS: Build and test your own AI image skill pack Good morning, AI enthusiasts, and welcome to our 8,268 new readers. The same week in July that OpenAI admitted its models had hacked Hugging Face, someone else was also letting themselves into OpenAI, ironically with Claude’s help.

Set up Grok Bot, create your first Bot, and hand it a useful task.

We’re open-sourcing Rebalancer, the assignment-problem solver that has been used to solve resource allocation problems throughout Meta for over nine years.

At a glance We report on the recent publication of our retrosynthesis model RetroChimera in the journal Nature (opens in new tab).

Welcome to Import AI, a newsletter about AI research. Import AI runs on arXiv, cappuccinos, and feedback from readers.

I was recently invited to brief a group of Congressional members and staff on the state of open-weight models in the lens of U.S.-China competition.

The AI story of September 14–20 was not one spectacular model launch. It was the machinery around agents becoming visible: people reading private chats, models writing instructions into their own memory, plugins updating beneath users, and regulators asking how to stop a system after release.