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deepagents vs onyx

deepagents and onyx share 8 technologies: fastmcp, anyio, AIOHTTP, agent-client-protocol, LangChain, langsmith, MCP, and voyageai. Both are written in Python.

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What they share and what sets them apart

langchain-ai

deepagents

The batteries-included agent harness.

Python31.1kRead on November 7, 2026, at commit 9c5d330What is deepagents built with?

Only in deepagents

In common

onyx-dot-app

onyx

Open Source AI Platform - AI Chat with advanced features that works with every LLM

Python33.3kRead on November 7, 2026, at commit a757433What is onyx built with?

Only in onyx

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
deepagents731,023 lines written452 code files
onyx1,626,990 lines written3,906 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.
deepagents1.2% of its commits signed by AIWith Claude Code, GitHub Copilot, Cursor, and Amp
onyx11.7% of its commits signed by AIWith Claude Code, Devin, Cursor, CodeRabbit, GitHub Copilot, and Sweep
ActivityFrom GitHub and its history, on the day SeeRepo read it.
deepagentsLast push November 7, 20264,640 commits31,068 stars
onyxLast push November 7, 202611,391 commits33,270 stars
TestsThe files that test the code, and the share of code files a test imports.
deepagents672 test files18.6% of its code files have a test that imports them
onyx3,158 test files45.7% of its code files have a test that imports them

Frequently asked questions

Which is bigger, deepagents or onyx?
onyx, with 1,626,990 lines written; deepagents has 731,023.

The proof: onyx-dot-app/onyx's code at commit a757433

Which has more GitHub stars, deepagents or onyx?
onyx, with 33,270 stars; deepagents has 31,068.

The proof: onyx-dot-app/onyx on GitHub

Which has more tests, deepagents or onyx?
onyx, with 3,158 test files; deepagents has 672.

The proof: onyx-dot-app/onyx's code at commit a757433

Which was updated more recently, deepagents or onyx?
Both got their last push on November 7, 2026.

The proof: onyx-dot-app/onyx's commits on GitHub

Which has more commits signed by AI, deepagents or onyx?
onyx: an AI signed 11.7% of its commits, with Claude Code, Devin, Cursor, CodeRabbit, GitHub Copilot, and Sweep; in deepagents, 1.2%.

The proof: the commits each tool signed in onyx-dot-app/onyx

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