goose vs cog

goose and cog share 8 technologies: axum, Tokio, jsonschema, tracing, tracing-subscriber, OpenTelemetry, tracing-opentelemetry, and opentelemetry-otlp. goose is written in Rust and cog in Go.

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What they share and what sets them apart

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
goose424,209 lines written1,022 code files
cog114,111 lines written254 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.
goose4.9% of its commits signed by AIWith Claude Code, GitHub Copilot, Cursor, Amp, Codex, and Warp
cog0.8% of its commits signed by AIWith GitHub Copilot and Claude Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
gooseLast push November 13, 20265,985 commits56,507 stars
cogLast push November 7, 20262,234 commits9,498 stars
TestsThe files that test the code, and the share of code files a test imports.
goose239 test files20.2% of its code files have a test that imports them
cog183 test files62.6% of its code files have a test that imports them

Frequently asked questions

Which is bigger, goose or cog?
goose, with 424,209 lines written; cog has 114,111.

The proof: aaif-goose/goose's code at commit 3c50f80

Which has more GitHub stars, goose or cog?
goose, with 56,507 stars; cog has 9,498.

The proof: aaif-goose/goose on GitHub

Which has more tests, goose or cog?
goose, with 239 test files; cog has 183.

The proof: aaif-goose/goose's code at commit 3c50f80

Which was updated more recently, goose or cog?
goose: its last push was on November 13, 2026, and cog's on November 7, 2026.

The proof: aaif-goose/goose's commits on GitHub

Which has more commits signed by AI, goose or cog?
goose: an AI signed 4.9% of its commits, with Claude Code, GitHub Copilot, Cursor, Amp, Codex, and Warp; in cog, 0.8%.

The proof: the commits each tool signed in aaif-goose/goose

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