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headroom vs x-algorithm

headroom and x-algorithm share 9 technologies: FastAPI, axum, Redis, Tokio, tower, OpenTelemetry, tracing, prometheus, and tracing-subscriber. headroom is written in Python and x-algorithm in Rust.

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What they share and what sets them apart

headroomlabs-ai

headroom

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

Python78.9kRead on November 4, 2026, at commit 31dcaf4What is headroom built with?

Only in headroom

In common

xai-org

x-algorithm

Algorithm powering the For You feed on X

Rust34.1kRead on November 7, 2026, at commit 3b6919fWhat is x-algorithm built with?

Only in x-algorithm

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
headroom789,601 lines written773 code files
x-algorithm419,187 lines written929 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
headroom28.1% of its commits signed by AIWith Claude Code, GitHub Copilot, Codex, Cursor, Devin, and Mistral Vibe
x-algorithm1.5% of its commits signed by AIWith Claude Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
headroomLast push November 4, 20263,201 commits78,851 stars
x-algorithmLast push November 7, 202665 commits34,122 stars
TestsThe files that test the code, and the share of code files a test imports.
headroom1,220 test files68.2% of its code files have a test that imports them
x-algorithm19 test files1.1% of its code files have a test that imports them

Frequently asked questions

Which is bigger, headroom or x-algorithm?
headroom, with 789,601 lines written; x-algorithm has 419,187.

The proof: headroomlabs-ai/headroom's code at commit 31dcaf4

Which has more GitHub stars, headroom or x-algorithm?
headroom, with 78,851 stars; x-algorithm has 34,122.

The proof: headroomlabs-ai/headroom on GitHub

Which has more tests, headroom or x-algorithm?
headroom, with 1,220 test files; x-algorithm has 19.

The proof: headroomlabs-ai/headroom's code at commit 31dcaf4

Which was updated more recently, headroom or x-algorithm?
x-algorithm: its last push was on November 7, 2026, and headroom's on November 4, 2026.

The proof: xai-org/x-algorithm's commits on GitHub

Which has more commits signed by AI, headroom or x-algorithm?
headroom: an AI signed 28.1% of its commits, with Claude Code, GitHub Copilot, Codex, Cursor, Devin, and Mistral Vibe; in x-algorithm, 1.5%.

The proof: the commits each tool signed in headroomlabs-ai/headroom

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