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.

Cortex Blog


Productionizing ML with workflows at Twitter

Cortex provides machine learning platform technologies, modeling expertise, and education to teams at Twitter...

Twitter meets TensorFlow

Twitter Cortex migrates deep learning framework from Lua Torch to TensorFlow.…

Introducing Torch Decision Trees

Today we are excited to announce torch-decisiontree: a python machine learning library using gradient boosted decision trees and random forests for sparse and dense tens…

Using Deep Learning at Scale in Twitter’s Timelines

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.