No layout prep
No finalising placement, hand-routing critical signals or writing rulesets before the board is routed.
The Flux alternative with no layout prep
Flux.ai has an AI agent too, living inside a full browser ECAD, and on paper it does every step. In practice, its own docs ask you to finalise placement, set dimensions, constraints and keep-out zones and hand-route the critical signals before Auto-Layout starts, then allow up to half an hour for a first result and 10 to 24 hours to converge. siliXon asks what the board should do in plain English, then picks the parts, places and routes the board in minutes, with no rulesets to write first.
Free plan. Runs in your browser.
Head to head
Who leads on what matters when you want a board.
siliXonYou design it, in the browser
Flux.aiBrowser ECAD with an AI agent
Starting point
siliXon: A plain-English description
Flux.ai: A description, inside a full ECAD
Even.Skills you need
siliXon: None
Flux.ai: ECAD setup: rules and constraints
siliXon leads.Who does the work
siliXon: siliXon; you steer and edit
Flux.ai: Its AI agent, after your layout prep
siliXon leads.What you get
siliXon: An editable PCB and fab files
Flux.ai: A PCB and fab files
Even.Time to first board
siliXon: Minutes
Flux.ai: Hours to days
siliXon leads.Board complexity
siliXon: Up to 4 layers
Flux.ai: Up to 8 layers
Flux.ai leads.Layout prep
siliXon: None
Flux.ai: Constraints, keep-outs and hand-routing
siliXon leads.
Verdict
Choose siliXon for the most direct path from a description to a routed board.
Choose Flux.ai for a full browser ECAD and boards up to eight layers.
siliXon todaysiliXon is in early beta and builds two- and four-layer, mostly digital boards. Review every design before fabrication.
Where Flux.ai is strongerA full browser ECAD, boards up to eight layers, a large parts library with live pricing and real-time collaboration.
Time to a prototype
siliXon
5 to 20 minutes
Flux.ai
4 hours to 3 days
From an idea to a board you can send to a fab, on one scale from zero. Estimates for someone new to each tool.
What changes when you switch from Flux.ai
Minutes, not hours
siliXon routes a supported board in minutes. Flux's docs put Auto-Layout at up to 30 minutes for a first result and 10 to 24 hours to converge.
Plain questions, not rule sets
siliXon asks what the board should do, not for net classes, differential pairs or keep-out zones.
siliXon vs Flux.ai: feature comparison
| Feature | |  |
|---|---|---|
| Starting point | A plain-English description | A description, inside a full ECAD |
| AI generation | Generates the whole board | Plans, wires, places and routes, with check-ins |
| PCB layout | Editable in 2D and 3D | Full editor with AI placement and routing |
| Copper layers | Up to 4 | Up to 8 |
| Part selection | Real, available parts picked for you | Large library with live pricing |
| Design checks | Connectivity and manufacturing checks | Design rules and manufacturability checks |
| Fab outputs | Gerbers, drill, BOM and pick-and-place | Gerbers, drill, BOM and pick-and-place |
| Firmware | Programmable over USB, with flashing steps | Not a primary output |
| Layout prep | None; answer a few questions | Finalise placement, set constraints, route critical signals |
| Runs in | Browser | Browser |
siliXon is in early beta and builds two- and four-layer, mostly digital boards. Review every design before fabrication.
So far creating my first project for 10 min - onboarding seems quite smooth
I like the self validation and how it explains everything too, makes it easier for me to quickly cross reference and learn on the go
Response is very meaningful, I like how it asks you questions to verify and gives you the options to choose the answers with the recommended on the one it thinks is a better option
Good so far. It is helpful and gives me advice
I have to say I love the UI and UX, the front end is really fun to interact with, with the little dynamic touches etc
Super helpful and easy to use
Really good actually better than Flux ai
Compare siliXon with other tools
siliXon vs KiCadFree, open-source desktop EDA for schematics and PCB layout
siliXon vs Altium DesignerProfessional EDA for complex, multi-layer production boards
siliXon vs SchematikAI that turns a prompt into Arduino, ESP32 and Pico projects
siliXon vs Blueprint.ioAI build plans with parts, wiring and assembly steps
siliXon vs DiodeAI-assisted board design service, from spec to production
siliXon vs QuilterAI placement and routing from your finished schematic
siliXon vs SnapMagicAI copilot for Altium, built on the SnapEDA parts library
siliXon vs CELUSAI that turns requirements into schematics and a BOM
siliXon vs atopileCode-native electronics design, with an agent in the browser
siliXon vs tscircuitOpen-source framework for designing PCBs in TypeScriptsiliXon vs Flux.ai: your questions answered
Do I need electronics experience?
Flux says anyone who can type can build, but a good layout means setting constraints, differential pairs and keep-outs in its ECAD. siliXon asks plain questions instead.
Do both generate PCBs from text?
Yes. Both plan, pick parts, draw the schematic, place, route and check. Flux does it inside a full ECAD with your setup; siliXon does it from one conversation.
Which supports more complex boards?
Flux.ai, with up to eight layers. siliXon supports up to four layers during beta.
Can both export manufacturing files?
Yes. Both export Gerbers, drill files, a BOM and pick-and-place data.