The Showdown
VASPvsDFTK.jl
Why pay monthly fees for VASP when you can self-host DFTK.jl for free? Let's look at the facts.
VS
VASP
The Expensive Option
- Closed Source (Black box)
- Expensive monthly fees per user
- Data stored on their servers
WINNER
DFTK.jl
The Freedom Choice
- 100% Open Source Code
- Free forever (Self-hosted)
- You own your data completely
Interactive Calculator
Calculate Your "SaaS Tax"
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10 people
150100200+
$
*Estimated standard pricing for VASP. Adjust if needed.
Estimated Annual Waste
$1,440
Monthly Burn Rate$120
5-Year Projection$7,200
Cost with Self-Hosted$0
Calculations based on 10 users at $12/mo.
Detailed Breakdown
0
Legacy Fortran (complex/opaque)
High-level Julia (readable math)
1
Requires recompiling complex binaries
Easy to inject new functionals/solvers
2
Highly optimized but rigid
Comparable to Fortran via Julia JIT