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About Flux
What is Flux?
Flux is an AI-assisted PCB design platform that lets you create printed circuit boards by describing what you want in plain English. Instead of manually placing components and routing traces, you can ask Flux to generate a temperature sensor node, a Bluetooth speaker board, or a motor driver — and it produces a complete, manufacturable design. Flux combines an AI copilot, a cloud-based editor, and component library to accelerate electronics development.
Who is it for?
Flux is designed for hardware engineers, embedded developers, hobbyists, and electronics startups who want to reduce PCB design time from days to hours. It is not a replacement for advanced signal integrity simulation or ultra-high-speed design; it is best for rapid prototyping, reference designs, IoT devices, and moderate-complexity boards (up to ~12W motor drivers or stereo audio amplifiers). Use it when you need a working board fast without deep CAD expertise.
Key capabilities
Flux includes AI auto-layout, AI-generated netlists, AI part research and datasheet parsing, AI design reviews, AI testing/debugging support, and a Copilot that writes firmware. It imports KiCad, Altium, and Cadence projects. The platform also features a copilot for code and prompts for common subsystems (WiFi, BLE, USB-C, I2C, CAN, LoRaWAN, PWM dimming). Account units (ACUs) power AI features — each plan includes a monthly ACU quota, with additional ACUs available for purchase.
Use cases
Typical projects built with Flux include low-power environmental sensor nodes, portable stereo speakers, handheld thermometers with data logging, brushless DC motor driver boards, Li-ion power modules, constant-current LED drivers, and wireless modules. The AI can parse component datasheets and suggest schematic symbols and footprints automatically.
Key features
- AI Copilot — Generate entire PCB designs from natural language descriptions like 'Make me a temperature and humidity sensor node'
- AI Auto-Layout — Automatically place components and route traces with AI guidance
- AI Part Research & Datasheet Parsing — Search and import components with datasheet analysis
- AI Design Reviews — Get automated design rule checks and suggestions
- AI Generated Netlists — Create connectivity automatically from high-level descriptions
- Code Firmware Faster — Copilot generates embedded code for microcontrollers
- Multi-Format Import — Import existing designs from KiCad, Altium, and Cadence projects
Flux Pricing
Flux pricing: from $20/mo.
Starter — $20/month ($16/month billed annually)
AI chat and task completion, 10 ACUs/month included ($2.50 per additional ACU), up to 50 private projects, unlimited public projects, KiCad part import. Free 14-day trial.
Pro — $142/month per editor ($112/month per editor billed annually) — Best Value
AI chat and task completion, 100 ACUs/month/editor included ($2 per additional ACU), unlimited private projects, up to 20 editors per project, KiCad part import, Altium & Cadence project import. Free 14-day trial.
Teams — $158/month per editor ($120/month per editor billed annually)
AI chat and task completion, 100 ACUs/month/editor included ($2 per additional ACU), pooled ACUs, all Pro features, shared team workspace, centralized billing. Free 14-day trial.
Enterprise — Custom pricing
Everything in Teams plus hidden workspaces, enhanced privacy & security, advanced export formats (JEP30), SOC2, SLA (2 hr response, 24 hr unblock), security audits, vendor signup, invoiced billing. Book a demo.
Frequently asked questions
How much does Flux cost?
Flux starts at $20/month for the Starter plan. Pro is $142/month per editor, Teams is $158/month per editor, and Enterprise has custom pricing. All plans offer a free 14-day trial.
Is there a free trial for Flux?
Yes, Flux offers a 14-day free trial on all plans. Cancel anytime during the trial.
What is Flux ACU and how does it work?
ACU stands for AI Compute Unit. Each plan includes a monthly ACU quota (10 for Starter, 100 for Pro and Teams) that powers AI features like chat, auto-layout, and netlist generation. Additional ACUs can be purchased at $2.50 (Starter) or $2.00 (Pro/Teams) per ACU.
Who is Flux best for?
Flux is best for hardware engineers, embedded developers, and electronics startups who want to design PCBs quickly using AI. It is ideal for IoT devices, sensor nodes, power modules, wireless boards, and moderate-complexity consumer electronics.
What are the top alternatives to Flux?
Top alternatives include Altium Designer, Eagle (Autodesk), KiCad (open-source), CircuitMaker, and Cadence OrCAD. Flux differentiates with its AI copilot and natural-language PCB generation.
Can Flux import designs from other PCB tools?
Yes. Starter plan imports KiCad projects. Pro and Teams also import Altium and Cadence project files.
