← The journal
LetX / Overleaf
LetX vs Overleaf: The 2026 Benchmark
We benchmarked LetX against the industry standard. The results? Local-first architecture wins on speed, latency, and reliability.
At Shahriar Labs, we believe in radical transparency. We built LetX to be faster than the incumbent.
The Results
| Metric | LetX (WASM) | Overleaf (Cloud) |
|---|---|---|
| Compile Time (10pg) | 0.4s | 3.2s |
| Latency | 0ms (Local) | ~150ms |
| Offline Capable | Yes | No |
| Real-time Collaboration | Yes (CRDT) | Yes (OT) |
| Data Privacy | Local-first | Server-side |
| Overleaf Import | 100% compatible | N/A |
| Price (individual) | Free | Freemium |
Why Architecture Matters
Overleaf relies on server-side compilation. Every change sends data to a server, compiles it, and sends a PDF back. LetX compiles in your browser. This eliminates network latency entirely for the compile loop.
Conclusion
For serious researchers, speed is productivity. LetX respects your time.
FAQ
Q: Is LetX compatible with Overleaf projects? A: Yes, 100% compatible.
Q: Is it free? A: Yes, for individuals. using LetX.
Keep reading