MagAI is multi-vendor, license-clean, browser-local, and AI-augmented. It is not the deepest FEM tool on the planet. Below is what each tool wins on — including ours.
| Criterion | MagAI Designer | Würth REDEXPERT | Magnetics Inc Designer | Ansys Maxwell / JMAG |
|---|---|---|---|---|
| Price | Free Tier (5/mo) · SME $50 | Free | Free | $$$$ (seat license) |
| Vendor coverage | 40+ vendors | Würth only | Magnetics Inc only | Any (you model it) |
| Login required | No | Yes | Yes (download) | Yes (license server) |
| Runs offline | Yes (Pyodide) | No | Desktop (phones home) | Yes (heavy desktop) |
| Topologies covered | 11 (6 hard + 5 DSL) | Inductors, basic Tx | Inductors, CM choke | Any (you build it) |
| Solve time | ~0.7 s (analytical) | seconds | seconds | minutes – hours (FEM) |
| AI assist | Narrators, ML core ranker, trust narrative | No | No | Limited |
| Trust framework | Public A/B/C grade, 5-component score | Vendor-supplied numbers | Vendor-supplied numbers | User-validated |
| License cleanliness | BSD / Apache 2.0 core | Proprietary | Proprietary | Proprietary |
| Export standards | AAS · JEP30 · SPICE · FEMM Lua · PDF · DXF/STEP | Datasheet PDF | Datasheet PDF | Native + neutral CAD |
| Privacy / IP | Spec never leaves browser (Pyodide-local) | Cloud | Cloud / phone-home | On-prem (desktop) |
| Where they win (honest) | FEM depth (we punt to FEMM/Ansys for 3D) | Würth catalog depth + app notes | Magnetics-specific powder-core wizardry | Industry-standard FEM, multiphysics depth |
Claims trace to: CLAUDE.md §3 tech stack, §4z engine status, /data/vendor_counts.json live vendor catalog. Have we got something wrong? Tell us.
Open the LLC 3 kW reference preview — engine-computed output, read-only.