Source: https://seerepo.com/compare/HeyPuter/puter/vs/langfuse/langfuse
Markdown source: https://seerepo.com/compare/HeyPuter/puter/vs/langfuse/langfuse.md
Description: puter and langfuse share 4 technologies: Express, Redis, Postgres, and AWS S3. puter is written in JavaScript and langfuse in TypeScript.

# puter vs langfuse

puter and langfuse share 4 technologies: Express, Redis, Postgres, and AWS S3. puter is written in JavaScript and langfuse in TypeScript.

- [HeyPuter/puter](https://seerepo.com/r/HeyPuter/puter): 🌐 The Internet Computer! Free, Open-Source, and Self-Hostable.
- [langfuse/langfuse](https://seerepo.com/r/langfuse/langfuse): 🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

## What they share and what sets them apart

- In common: Express, Redis, Postgres, AWS S3
- Only in puter: None
- Only in langfuse: Next.js, React, axum, Sentry, PostHog, Stripe, MCP, Anthropic, OpenAI

## Side by side

| | puter | langfuse |
|---|---|---|
| Size | 731,101 lines written, 1,029 code files | 1,333,775 lines written, 4,441 code files |
| Who writes it | 2% of its commits signed by AI. With Claude Code, Codex, GitHub Copilot, Devin, and Cursor | 19.3% of its commits signed by AI. With Claude Code, Cursor, Codex, GitHub Copilot, and Amp |
| Activity | Last push October 31, 2026, 6,596 commits, 44,036 stars | Last push October 31, 2026, 10,563 commits, 36,815 stars |
| Tests | 773 test files. 60.4% of its code files have a test that imports them | 891 test files. 18.2% 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, puter or langfuse?

langfuse, with 1,333,775 lines written in 4,441 code files; puter has 731,101 in 1,029.

The proof: [langfuse/langfuse's code at commit 4acaf72](https://github.com/langfuse/langfuse/tree/4acaf7285704fe2a1a1c7bed979dcc82868c5d72)

### Which has more GitHub stars, puter or langfuse?

puter, with 44,036 stars; langfuse has 36,815.

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

### Which has more tests, puter or langfuse?

langfuse, with 891 test files; puter has 773.

The proof: [langfuse/langfuse's code at commit 4acaf72](https://github.com/langfuse/langfuse/tree/4acaf7285704fe2a1a1c7bed979dcc82868c5d72)

### Which was updated more recently, puter or langfuse?

Both got their last push on October 31, 2026.

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

### Which has more commits signed by AI, puter or langfuse?

langfuse: an AI signed 19.3% of its commits, with Claude Code, Cursor, Codex, GitHub Copilot, and Amp; in puter, 2%.

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

## Sources

- HeyPuter/puter: Read on October 31, 2026, at commit a1fe14c (https://github.com/HeyPuter/puter/tree/a1fe14cbd5305a9724c7dd14809f82ea8ade3d19)
- langfuse/langfuse: Read on November 1, 2026, at commit 4acaf72 (https://github.com/langfuse/langfuse/tree/4acaf7285704fe2a1a1c7bed979dcc82868c5d72)

## 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.