Source: https://seerepo.com/compare/onyx-dot-app/onyx/vs/supabase/supabase
Markdown source: https://seerepo.com/compare/onyx-dot-app/onyx/vs/supabase/supabase.md
Description: onyx and supabase share 6 technologies: Next.js, React, Sentry, PostHog, Stripe, and OpenAI. onyx is written in Python and supabase in TypeScript.

# onyx vs supabase

onyx and supabase share 6 technologies: Next.js, React, Sentry, PostHog, Stripe, and OpenAI. onyx is written in Python and supabase in TypeScript.

- [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
- [supabase/supabase](https://seerepo.com/r/supabase/supabase): The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

## What they share and what sets them apart

- In common: Next.js, React, Sentry, PostHog, Stripe, OpenAI
- Only in onyx: Expo, FastAPI, Redis, Postgres, Google Cloud Storage
- Only in supabase: Vite, React Router, Supabase, MCP

## Side by side

| | onyx | supabase |
|---|---|---|
| Size | 1,580,032 lines written, 4,036 code files | 1,107,438 lines written, 6,353 code files |
| Who writes it | 11.6% of its commits signed by AI. With Claude Code, Devin, Cursor, CodeRabbit, GitHub Copilot, and Sweep | 2% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, CodeRabbit, Codex, and Devin |
| Activity | Last push November 1, 2026, 11,257 commits, 33,146 stars | Last push October 29, 2026, 32,541 commits, 114,289 stars |
| Tests | 3,061 test files. 43.4% of its code files have a test that imports them | 1,098 test files. 19.4% 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, onyx or supabase?

onyx, with 1,580,032 lines written in 4,036 code files; supabase has 1,107,438 in 6,353.

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, onyx or supabase?

supabase, with 114,289 stars; onyx has 33,146.

The proof: [supabase/supabase on GitHub](https://github.com/supabase/supabase)

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

onyx, with 3,061 test files; supabase has 1,098.

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, onyx or supabase?

onyx: its last push was on November 1, 2026, and supabase's on October 29, 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, onyx or supabase?

onyx: an AI signed 11.6% of its commits, with Claude Code, Devin, Cursor, CodeRabbit, GitHub Copilot, and Sweep; in supabase, 2%.

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

## Sources

- onyx-dot-app/onyx: Read on November 1, 2026, at commit 3eb6420 (https://github.com/onyx-dot-app/onyx/tree/3eb6420f6c7d6c0a94a0b7107a6138509c6d0f48)
- supabase/supabase: Read on October 29, 2026, at commit bd62dec (https://github.com/supabase/supabase/tree/bd62dec2e20aa165e37a1592dbda655835bf2683)

## 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.