Gallium

Primary Sources

Read the algorithms in their own words.

Every link below is a primary source — the actual blog post, docs page, or repo from the platform itself. No interpretations, no third-party summaries.

LinkedIn

Article

Engineering the next generation of LinkedIn's Feed

LinkedIn Engineering's deep-dive on the new LLM- and GPU-powered Generative Recommender that ranks every post in the Feed today.

SourceLinkedIn Engineering
Published2025
Open the source

LinkedIn

Announcement

How LinkedIn is Improving the Feed

LinkedIn News on the four shifts now shaping who sees what: Generative Recommenders, anti-engagement-pod work, less engagement bait, and an Interest Picker for new members.

SourceLinkedIn News
Published2026
Open the source

X / Twitter

Article

Twitter's Recommendation Algorithm

The original blog post from Twitter Engineering announcing that the algorithm powering the For You timeline has been open-sourced.

SourceTwitter Engineering
PublishedMar 31, 2023
Open the source

X / Twitter

Open Source

twitter/the-algorithm

The actual recommendation system code on GitHub. Skim the README for a clean overview of how candidates are sourced, ranked, and filtered.

SourceGitHub · Twitter
PublishedOpen-sourced 2023
Open the source

SEO

Documentation

SEO Starter Guide: The Basics

Google's official refreshed SEO Starter Guide. The simplest, highest-trust primer on what Google actually wants to see on a page.

SourceGoogle Search Central
PublishedRefreshed Feb 2024
Open the source

SEO

Documentation

Creating Helpful, Reliable, People-First Content

Google's canonical write-up of E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) and the Who/How/Why test for content quality.

SourceGoogle Search Central
PublishedReference doc
Open the source

AI Search

Announcement

Generative AI in Search: Let Google do the searching for you

The Google I/O 2024 announcement of AI Overviews — the new Gemini-powered layer that sits above the classic blue links for hundreds of millions of US users.

SourceGoogle
PublishedMay 14, 2024
Open the source

AI Search

Announcement

Introducing ChatGPT search

OpenAI's announcement of real-time web search inside ChatGPT, with citations to the original sources. The piece every AEO/GEO playbook now starts from.

SourceOpenAI
PublishedOct 31, 2024
Open the source

AI Search

Announcement

Claude can now search the web

Anthropic's announcement that Claude can search the web and cite its sources directly inline — the third major AI-search surface to optimize for.

SourceAnthropic
PublishedMar 20, 2025
Open the source

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