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headroom vs iii

headroom and iii share 10 technologies: axum, rusqlite, Redis, SQLite, Tokio, tower, Pydantic, OpenTelemetry, tracing, and tracing-subscriber. headroom is written in Python and iii 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

iii-hq

iii

Effortlessly compose, extend, and observe every service in real-time for the first time ever.

Rust18.9kRead on November 6, 2026, at commit 4094bb4What is iii built with?

Only in iii

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
headroom789,601 lines written773 code files
iii523,734 lines written690 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
iii4.9% of its commits signed by AIWith Claude Code, CodeRabbit, Cursor, and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
headroomLast push November 4, 20263,201 commits78,851 stars
iiiLast push November 6, 20262,181 commits18,926 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
iii452 test files21.4% of its code files have a test that imports them

Frequently asked questions

Which is bigger, headroom or iii?
headroom, with 789,601 lines written; iii has 523,734.

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

Which has more GitHub stars, headroom or iii?
headroom, with 78,851 stars; iii has 18,926.

The proof: headroomlabs-ai/headroom on GitHub

Which has more tests, headroom or iii?
headroom, with 1,220 test files; iii has 452.

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

Which was updated more recently, headroom or iii?
iii: its last push was on November 6, 2026, and headroom's on November 4, 2026.

The proof: iii-hq/iii's commits on GitHub

Which has more commits signed by AI, headroom or iii?
headroom: an AI signed 28.1% of its commits, with Claude Code, GitHub Copilot, Codex, Cursor, Devin, and Mistral Vibe; in iii, 4.9%.

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

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