Evidence check · August 29, 2026
LetX and Overleaf compared by collaboration limits, AI features, pricing, history, Git, and institutional deployment.
Short answer
LetX provides unlimited collaborators on Free, Lexi, MCP access, and a lower listed individual Pro price. Overleaf provides established institutional plans, integrations, procurement options, and optional on-premises deployment.
Feature comparison
| Area | LetX | Overleaf |
|---|---|---|
| Free collaboration | Unlimited collaborators on every plan | One collaborator per project on Free |
| Free compilation | 40 compiles per day | Unlimited projects with a basic compile-time limit |
| AI | Lexi reads project files and compile logs, edits source, recompiles, and uses a monthly Pro allowance | AI tools are included across plans with daily or plan-based allowances |
| MCP | Hosted OAuth 2.1 MCP server for project and compile tools | No comparable public LaTeX-project MCP endpoint documented |
| History | Last 15 versions on Free; full history on Pro | Last 24 hours and labeled versions on Free; full history on premium |
| Git | GitHub import/export on Pro | Git and GitHub synchronization are premium features |
| Individual pricing | $18/month or $180/year Pro; $9/month or $90/year Student Pro | $199/year Standard; $399/year Pro; $98/year Student, as listed when checked |
| Institutional deployment | Custom classroom, lab, university, and department plans | Organization plans, SSO, optional FedRAMP authorization, and optional on-premises deployment |
Prices, limits, and features change. This is a dated research note, not a substitute for checking each vendor’s live plan page.
Questions
Not universally. LetX provides unlimited collaborators on Free, Lexi, MCP access, and a lower listed individual Pro price. Overleaf provides established institutional plans, integrations, procurement options, and optional on-premises deployment.
Student teams and labs that need unlimited collaborators on the free plan; Writers who want an agent that edits the real project and validates changes by compiling; AI-client workflows that need an OAuth-protected LaTeX MCP server; Students who qualify for the listed $9 monthly or $90 yearly Pro price.
Organizations that require Overleaf Server Pro, SSO, FedRAMP options, or established procurement; Researchers whose institutions already provide Overleaf premium access; Users who depend on Overleaf’s mature integration and template ecosystem; Teams that prefer Overleaf’s included AI allowance and established review workflow.