Source: https://seerepo.com/compare/mem0ai/mem0/vs/nextauthjs/next-auth
Markdown source: https://seerepo.com/compare/mem0ai/mem0/vs/nextauthjs/next-auth.md
Description: mem0 and next-auth share 3 technologies: Postgres, Supabase, and MongoDB. mem0 is written in Python and next-auth in TypeScript.

# mem0 vs next-auth

mem0 and next-auth share 3 technologies: Postgres, Supabase, and MongoDB. mem0 is written in Python and next-auth in TypeScript.

- [mem0ai/mem0](https://seerepo.com/r/mem0ai/mem0): The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.
- [nextauthjs/next-auth](https://seerepo.com/r/nextauthjs/next-auth): Authentication for the Web.

## What they share and what sets them apart

- In common: Postgres, Supabase, MongoDB
- Only in mem0: FastAPI, Redis, OpenAI, PostHog, Anthropic, AWS S3
- Only in next-auth: Firebase

## Side by side

| | mem0 | next-auth |
|---|---|---|
| Size | 234,363 lines written, 636 code files | 55,839 lines written, 363 code files |
| Who writes it | 3.6% of its commits signed by AI. With Claude Code and Cursor | 0.1% of its commits signed by AI. With Claude Code |
| Activity | Last push October 29, 2026, 2,650 commits, 68,064 stars | Last push July 22, 2026, 3,882 commits, 28,376 stars |
| Tests | 324 test files. 46.2% of its code files have a test that imports them | 96 test files. 17.6% 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, mem0 or next-auth?

mem0, with 234,363 lines written; next-auth has 55,839.

The proof: [mem0ai/mem0's code at commit 26cdefb](https://github.com/mem0ai/mem0/tree/26cdefb46600c0fa5953c4b5ee5003c125539fc4)

### Which has more GitHub stars, mem0 or next-auth?

mem0, with 68,064 stars; next-auth has 28,376.

The proof: [mem0ai/mem0 on GitHub](https://github.com/mem0ai/mem0)

### Which has more tests, mem0 or next-auth?

mem0, with 324 test files; next-auth has 96.

The proof: [mem0ai/mem0's code at commit 26cdefb](https://github.com/mem0ai/mem0/tree/26cdefb46600c0fa5953c4b5ee5003c125539fc4)

### Which was updated more recently, mem0 or next-auth?

mem0: its last push was on October 29, 2026, and next-auth's on July 22, 2026.

The proof: [mem0ai/mem0's commits on GitHub](https://github.com/mem0ai/mem0/commits)

### Which has more commits signed by AI, mem0 or next-auth?

mem0: an AI signed 3.6% of its commits, with Claude Code and Cursor; in next-auth, 0.1%.

The proof: [the commits each tool signed in mem0ai/mem0](https://seerepo.com/r/mem0ai/mem0/ai)

## Sources

- mem0ai/mem0: Read on October 30, 2026, at commit 26cdefb (https://github.com/mem0ai/mem0/tree/26cdefb46600c0fa5953c4b5ee5003c125539fc4)
- nextauthjs/next-auth: Read on November 2, 2026, at commit a1a16a5 (https://github.com/nextauthjs/next-auth/tree/a1a16a5a7780488c7449feece410033f445d0b31)

## 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.