# LetX (letx.app)

Compiles LaTeX documents to PDF in a browser, with real-time co-editing by several authors at once.

- Atlas card: https://inite.ai/en/atlas/letx.app
- Site: https://letx.app
- For: students and research teams writing LaTeX papers and theses together online
- Categories: documents
- Use 0/100 · alive 100/100

## Used for

- compile LaTeX documents to PDF in seconds
- co-edit a thesis or preprint in real time
- preview math equations live while typing

## Price

- from 18 USD/month, free plan (read 2026-10-16 on https://letx.app/pricing/)

## For developers

- MCP server: app.letx/letx (namespace; auth on 2026-10-16)
- Read 2026-10-16

## MCP server, measured daily

Server: https://api.letx.app/mcp, checked every day since 2026-10-19 (6 checks).

- Answered: measuring, 6 daily checks so far
- Median first answer: 1100 ms
- Sign-in: OAuth (the client signs the user in)
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: soc2, iso27001, gdpr
- Training on your data: no (https://letx.app/security)
- Read 2026-10-16

---

Source: INITE Atlas, https://inite.ai/en/atlas/letx.app. JSON: https://inite.ai/api/atlas/letx.app. MCP: https://inite.ai/api/mcp (atlas_lookup).