Source: https://seerepo.com/compare/multica-ai/multica/vs/onyx-dot-app/onyx
Markdown source: https://seerepo.com/compare/multica-ai/multica/vs/onyx-dot-app/onyx.md
Description: multica and onyx share 7 technologies: Expo, Next.js, React, Postgres, Redis, PostHog, and OpenAI. multica is written in Go and onyx in Python.

# multica vs onyx

multica and onyx share 7 technologies: Expo, Next.js, React, Postgres, Redis, PostHog, and OpenAI. multica is written in Go and onyx in Python.

- [multica-ai/multica](https://seerepo.com/r/multica-ai/multica): Make humans and AI agents work as one team — open-source and self-hostable.
- [onyx-dot-app/onyx](https://seerepo.com/r/onyx-dot-app/onyx): Open Source AI Platform - AI Chat with advanced features that works with every LLM

## What they share and what sets them apart

- In common: Expo, Next.js, React, Postgres, Redis, PostHog, OpenAI
- Only in multica: chi, net/http, Resend
- Only in onyx: FastAPI, Sentry, Stripe, Google Cloud Storage

## Side by side

| | multica | onyx |
|---|---|---|
| Size | 1,364,599 lines written, 2,580 code files | 1,580,032 lines written, 4,036 code files |
| Who writes it | 35.5% of its commits signed by AI. With Claude Code, Codex, Cursor, and GitHub Copilot | 11.6% of its commits signed by AI. With Claude Code, Devin, Cursor, CodeRabbit, GitHub Copilot, and Sweep |
| Activity | Last push October 30, 2026, 5,270 commits, 54,356 stars | Last push November 1, 2026, 11,257 commits, 33,146 stars |
| Tests | 2,275 test files. 62.4% of its code files have a test that imports them | 3,061 test files. 43.4% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, multica or onyx?

onyx, with 1,580,032 lines written in 4,036 code files; multica has 1,364,599 in 2,580.

The proof: [onyx-dot-app/onyx's code at commit 3eb6420](https://github.com/onyx-dot-app/onyx/tree/3eb6420f6c7d6c0a94a0b7107a6138509c6d0f48)

### Which has more GitHub stars, multica or onyx?

multica, with 54,356 stars; onyx has 33,146.

The proof: [multica-ai/multica on GitHub](https://github.com/multica-ai/multica)

### Which has more tests, multica or onyx?

onyx, with 3,061 test files; multica has 2,275.

The proof: [onyx-dot-app/onyx's code at commit 3eb6420](https://github.com/onyx-dot-app/onyx/tree/3eb6420f6c7d6c0a94a0b7107a6138509c6d0f48)

### Which was updated more recently, multica or onyx?

onyx: its last push was on November 1, 2026, and multica's on October 30, 2026.

The proof: [onyx-dot-app/onyx's commits on GitHub](https://github.com/onyx-dot-app/onyx/commits)

### Which has more commits signed by AI, multica or onyx?

multica: an AI signed 35.5% of its commits, with Claude Code, Codex, Cursor, and GitHub Copilot; in onyx, 11.6%.

The proof: [the commits each tool signed in multica-ai/multica](https://seerepo.com/r/multica-ai/multica/ai)

## Sources

- multica-ai/multica: Read on October 30, 2026, at commit 908456c (https://github.com/multica-ai/multica/tree/908456c60192907f3c7e65709e18846f08eea2f8)
- onyx-dot-app/onyx: Read on November 1, 2026, at commit 3eb6420 (https://github.com/onyx-dot-app/onyx/tree/3eb6420f6c7d6c0a94a0b7107a6138509c6d0f48)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.