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PentestGPT vs onyx

PentestGPT and onyx share 7 technologies: OpenAI, Google, prompt-toolkit, Rich, langfuse, MCP, and Pydantic. Both are written in Python.

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What they share and what sets them apart

GreyDGL

PentestGPT

Automated Penetration Testing Agentic Framework Powered by Large Language Models

Python16.3kRead on November 7, 2026, at commit e8b1bb7What is PentestGPT built with?

Only in PentestGPT

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.
PentestGPT15,309 lines written40 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.
PentestGPT0.8% of its commits signed by AIWith Claude Code
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.
PentestGPTLast push July 14, 2026244 commits16,308 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.
PentestGPT39 test files37.5% 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, PentestGPT or onyx?
onyx, with 1,626,990 lines written; PentestGPT has 15,309.

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

Which has more GitHub stars, PentestGPT or onyx?
onyx, with 33,270 stars; PentestGPT has 16,308.

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

Which has more tests, PentestGPT or onyx?
onyx, with 3,158 test files; PentestGPT has 39.

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

Which was updated more recently, PentestGPT or onyx?
onyx: its last push was on November 7, 2026, and PentestGPT's on July 14, 2026.

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

Which has more commits signed by AI, PentestGPT or onyx?
onyx: an AI signed 11.7% of its commits, with Claude Code, Devin, Cursor, CodeRabbit, GitHub Copilot, and Sweep; in PentestGPT, 0.8%.

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

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