AI illustration: Open-source the entire X codebase
XAI
Partial

X open source algorithm: Elon promised the whole codebase

Elon Musk said X would open-source its entire codebase by Jan 31, 2026. It only partly happened.

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“hopefully by next month, we should be able to open source literally all of the @X codebase. Nothing left out at all.”
— Elon Musk · Dec 5, 2025 · @elonmusk on X ↗
See his original post on XLoads Elon's actual tweet, right here.
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What actually happened

Partial — algorithm only (Jan 20 2026). Musk restated Jul 24 that 'next month, every line of code touching the X system will be open source' (August 2026). Fetched Oct 14 2026: GitHub xai-org/x-algorithm README is still the For You ranking stack; latest notable update is Sep 18 Under the Hood legal-compliance labels. 'What's not in this repo' still excludes Grox prompts, some botmaker rules, and the rest of X. August restatement window closed Aug 31. Status stays partial. GitHub xai-org/x-algorithm (fetched Oct 14 2026) — For You ranking stack; Grox prompts still unpublished ↗

The Progression

Dec 5, 2025
The promise: “hopefully by next month, we should be able to open source literally all of the @X codebase. Nothing left out at all.” · @elonmusk on X ↗
Jan 20, 2026
Partial — on time. Partial — algorithm only (Jan 20 2026). Musk restated Jul 24 that 'next month, every line of code touching the X system will be open source' (August 2026). Fetched Oct 14 2026: GitHub xai-org/x-algorithm README is still the For You ranking stack; latest notable update is Sep 18 Under the Hood legal-compliance labels. 'What's not in this repo' still excludes Grox prompts, some botmaker rules, and the rest of X. August restatement window closed Aug 31. Status stays partial. GitHub xai-org/x-algorithm (fetched Oct 14 2026) — For You ranking stack; Grox prompts still unpublished ↗
Today · Oct 14, 2026
Status: Partial · on time. Sort of happened.

X open-sourced only its recommendation algorithm in March 2026 — after the Jan target and far short of 'literally all of the @X codebase, nothing left out.'

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LAST CHECKED 2026-10-14

Questions about X Open Source Algorithm

What did Elon Musk promise about X Open Source Algorithm?

On Dec 5, 2025, Elon Musk said: “hopefully by next month, we should be able to open source literally all of the @X codebase. Nothing left out at all.” (source).

Did it happen?

Partial — algorithm only (Jan 20 2026). Musk restated Jul 24 that 'next month, every line of code touching the X system will be open source' (August 2026). Fetched Oct 14 2026: GitHub xai-org/x-algorithm README is still the For You ranking stack; latest notable update is Sep 18 Under the Hood legal-compliance labels. 'What's not in this repo' still excludes Grox prompts, some botmaker rules, and the rest of X. August restatement window closed Aug 31. Status stays partial. (GitHub xai-org/x-algorithm (fetched Oct 14 2026) — For You ranking stack; Grox prompts still unpublished)

X’s record

Delivered
7
64% of resolved claims delivered.
Missed
4
Deadline passed, still no-show.
Still open
1
On the clock now. All 12 X claims →

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Grok 5 released before end of 2025

“Grok 5 will be out before the end of this year and it will be crushingly good.”
goalposts: 2025 → 2026 · moved 1×
called AUG 2025287 days past due

Discussion

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← Grok 4.20 in ~3 weeks, Grok 5 in a few months Security-test and open-source all of X Chat →
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