Twitter Cortex

Cortex is a group of researchers, engineers and scientists working together to build state of the art machine learning technologies within Twitter.

Twitter is what’s happening in the world right now and operating at such a global scale brings massive research and engineering challenges. Cortex exists to solve these challenges through development and application of new machine learning techniques, aiming to ensure that users have the best possible experience across all of Twitter’s platforms and media - from connecting users with the best content to enhancing video quality.

See What's New In Cortex

Introducing Twitter’s first algorithmic bias bounty challenge

By Rumman Chowdhury and Jutta Williams

Friday, 30 July 2021

Graph Neural Networks as Neural Diffusion PDEs

By Ben Chamberlain and Michael Bronstein

Friday, 23 July 2021

Provably expressive graph neural networks

By Fabrizio Frasca and Michael Bronstein

Tuesday, 1 June 2021

Sharing learnings about our image cropping algorithm

By Rumman Chowdhury

Wednesday, 19 May 2021

Work with us

We are seeking brilliant machine learning researchers, data scientists, and software engineers who want to be part of a world‑class team working on the most exciting technology applied to Twitter data.