Flux vs SolidWorks: SolidWorks-grade parts. Modeled on demand.

Your engineers use SolidWorks to sketch, constrain, and then model every feature. You describe the part to Flux. The AI engineer models, checks, and gets it made.

Flux editor: the AI engineer plans and delegates tasks while the 3D view shows the complete device: enclosure, circuit board, and wiring

What Flux and SolidWorks are

What Flux is

Flux equips your team with an autonomous hardware engineer. Input a requirement. The AI manages design planning, part selection, schematic creation, and board routing. It engineers mechanical parts. The system also writes firmware. It validates its own work via simulation alongside design rule checks. Your engineers then get files ready to manufacture.

What SolidWorks is

SOLIDWORKS is 2D and 3D product development software from Dassault Systemes. It includes CAD, simulation, collaboration, data management, and manufacturing tools.[1]

SOLIDWORKS comes as desktop software and as cloud-native software on the 3DEXPERIENCE platform.[2]

What SolidWorks does

3D parts and assemblies

SOLIDWORKS is 3D CAD for parts, assemblies, and 2D drawings.[1]

Simulation and data management

SOLIDWORKS includes simulation and product data management for engineering teams.[1]

Electrical design

SOLIDWORKS includes tools for electrical design.[1]

How Flux sets itself apart

Explain the part or modification in everyday language. Flux develops the parametric model and determines the correct CAD kernel for every component. It executes stress, thermal, and airflow simulation, then exports STEP, STL, or 3MF files to you. Your engineers verify and adjust the output. Flux functions within your web browser.

Close-up of the ESP32 x86 PC board, marked Made with Flux
Real boards and enclosures that Flux created.
Flux compared with SolidWorks
Feature Flux SolidWorks
Requirements and specification The AI engineer turns your idea into requirements and a product specification, and checks the design against them. 3DEXPERIENCE manages requirements across product development.[14]
What it is AI hardware engineer providing its own design tools 2D and 3D product development software[1]
Where it runs Use your web browser and install nothing. The cloud stores your projects. Desktop software that you install on a PC. Browser-based xDesign tools are also available.[2]
Who does the design work The Flux agent. Your engineers review and edit. Your engineers model parts and assemblies in SOLIDWORKS.[1]
How a part is made You specify the part, and the AI engineer drafts a parametric model. Your engineers check and update it. Your engineers model each part in the tool[1]
CAD kernel Kernel agnostic: OpenCascade, NVIDIA SMLib, and Siemens Parasolid on request. The AI engineer selects the kernel for each part. Parasolid[3]
Mechanical CAD Native and kernel agnostic. Scale from one enclosure to a whole robot arm. Built in[1]
Mechanical simulation Finite-element simulation: airflow, thermal, and stress Simulation[1]
Mechanical manufacturing Get 3MF, STL, and STEP files. Receive quotes for sheet metal, laser cutting, CNC machining, and 3D printing. Manufacturing tools[1]
CNC toolpaths and G-code The AI engineer writes the toolpaths, the G-code, a toolpath preview, and a setup sheet for the parts that it designed. SOLIDWORKS CAM programs milled parts and creates toolpaths.[8]
Quotes and orders Quotes and orders for boards, 3D printing, CNC machining, and wire harnesses, from the project. 3DEXPERIENCE Make lets SOLIDWORKS users quote and order custom parts.[10]
Versions, branches, and merges Full change history. The AI engineer forks a design into a second version, keeps both, and merges the changes that you pick. SOLIDWORKS PDM provides version control for design files.[6]
Who reviews the work The whole team, in one live project in the browser: electrical, layout, mechanical, and firmware engineers Your engineers review the design in the desktop app.[1]
Product images, videos, and documents Product images, product videos, datasheets, and regulatory documents, made from the design in the project. SOLIDWORKS Visualize creates images and animations of products.[11]
Plus electronics as well
Schematic and parts Included. It chooses among 734,000+ public parts. Electrical design tools[1]
Board layout and routing Built in SOLIDWORKS PCB is a PCB design tool integrated with 3D design.[4]
High-speed design The AI engineer plans DDR topology and timing budgets, routes differential pairs and length-matched buses, tunes length and skew, fans out BGAs with blind, buried, and microvias, and sets trace impedance from your stackup. It checks the routed board with S-parameters, TDR, eye diagrams, crosstalk analysis, and a signal integrity, power integrity, and EMC review. Your engineers review and edit. SOLIDWORKS PCB supports route-length rules and tuning.[13]
Parts and sourcing 734,000+ public parts, with live prices and stock from distributors Electrical 3D shares component libraries across projects.[5]
Simulation and design rule checks SPICE, power delivery network, full-wave electromagnetic, signal integrity, thermal, and mechanical simulation, plus design rule checks SOLIDWORKS Simulation analyzes strength, motion, and heat transfer.[7]
Firmware Writes firmware for the board it designed Not in SOLIDWORKS[1]
Wiring harnesses Built in. Flux designs the wiring harnesses between the boards: connectors, pinouts, and wires, in the same project. Electrical 3D routes wires, cables, and harnesses in 3D models.[5]
Manufacturing files Gerber, ODB++, IPC-2581, bill of materials, pick-and-place, and more; Flux can check the files before you order, including copper gaps, silkscreen, board outline, BOM, and pick-and-place files. SOLIDWORKS PCB outputs Gerber and other fabrication files.[12]
Import from other tools Imports complete projects from Altium, OrCAD and Allegro, KiCad, PADS and Xpedition, CADSTAR, Eagle, Fusion Electronics, EasyEDA, DipTrace, and SOLIDWORKS PCB. Flux imports Labcenter Proteus SDF netlists with Specctra board exports. IPC-2581 revision B and C files become board projects with reusable footprint parts. IDF 2.0 and 3.0 board files become board projects with the outline, cutouts, drilled and mounting holes, part placements, and 3D part heights. CircuitWorks imports IDF, IDX, and PADS ASCII PCB files.[9]

Considering an alternative to SolidWorks?

Start a Flux project free and describe the device you want to build.

Mechanical design, created by the AI engineer.

Parts plus assemblies

Flux develops complete assemblies and single parts. These range from a complete robot arm down to an enclosure or a bracket. It puts every part into one model.

Fits the physical board

Flux aligns every part with the real board cutouts, mounting holes, and connectors. This agent can adjust mechanical parts and the board at the same time.

Single parts library

One library holds chips and connectors, devices external to the circuit board, and mechanical hardware, including screws and standoffs, for the complete product.

Modifiable CAD code

For each part, Flux generates editable CAD code and a STEP file. Your engineers can check and update the code.

You can add your SolidWorks work to Flux.

After uploading your mechanical parts, instruct Flux to edit them in plain words. Next, send them to manufacturing.

An engineer holds a board in a green enclosure at the bench
Real boards and enclosures that Flux created.

Modifies your team's existing STEP files.

The request, as typed in Flux

“The holder must cover a much taller power supply. Make the bent side flange 40 mm deeper. Keep the 4.4 mm hole in the flange where it is. Then cut five 5 x 30 mm vertical vent slots in the new part of the flange, 15 mm apart and centered on the flange width.”

Before: the STEP file from Autodesk Inventor. The bent flange is 24.5 mm deep.
Before: the STEP file from Autodesk Inventor. The bent flange is 24.5 mm deep.
After: the flange is 64.5 mm deep, with five 5 × 30 mm vent slots. The 4.4 mm hole did not move. Flux saves a new STEP file and editable CAD code.
After: the flange is 64.5 mm deep, with five 5 × 30 mm vent slots. The 4.4 mm hole did not move. Flux saves a new STEP file and editable CAD code.

Import your existing work

Upload 3D models, part libraries, and complete projects. The software keeps placement, parts, schematics, as well as routing from most formats.

Proceed with your AI engineer

Engineers can modify imported designs instantly. Say "move the USB cutout 3 cm left" or "make the enclosure tighter". Flux will execute these changes.

Prepare for production

Flux creates the files your manufacturer requires. For the board, you get Gerber, ODB++, IPC-2581, bill of materials, and pick-and-place. For the mechanical parts, you receive STEP, STL, or 3MF.

Browse all file formats
Complete projects
Flux imports complete projects from Altium, Cadence OrCAD and Allegro, KiCad, Siemens PADS and Xpedition, Zuken CADSTAR, Eagle, Fusion Electronics, EasyEDA, DipTrace (XML export), and SOLIDWORKS PCB. Schematics, parts, connections, board outlines, and placement come across. Flux imports Labcenter Proteus SDF netlists with Specctra board exports. IPC-2581 revision B and C files become board projects with reusable footprint parts. IDF 2.0 and 3.0 board files become board projects with the outline, cutouts, drilled and mounting holes, part placements, and 3D part heights.
Part libraries
Altium, OrCAD, PADS, KiCad, Eagle, Fusion Electronics, EasyEDA, and DipTrace libraries, Allegro footprints, and JEP30 part models become Flux parts.
Mechanical files
STEP, STL, OBJ, 3MF, and glTF models, plus DXF board outlines.
Handoff to manufacturing and electronics tools
Gerber, ODB++, IPC-2581, IPC-D-356 test netlists, bill of materials, pick-and-place, EDIF netlists, GenCAD, and KiCad board files.
Handoff to mechanical design
The full board and its parts as STEP, compressed STEP, BREP, VRML, glTF, and STL models, plus DXF layer drawings. Enclosures and brackets that Flux designs export as STEP, STL, and 3MF, ready for your mechanical tools or a 3D printer.

Kernel-agnostic CAD

Creates all parts using the correct CAD kernel.

Standard CAD platforms use only one geometry kernel, passing its limits to every part. Flux is kernel agnostic, matching its model agnostic nature. For each part, the AI engineer chooses the correct kernel. It selects another kernel when the active one cannot make a feature, then assembles every part inside a single model.

  • OpenCascade

    CAM and additional CAD tools read this accurate, standard geometry correctly. It works well for multi-part assemblies and machined parts.

  • SMLib

    Curvature-continuous and smooth surfaces for consumer and hand-held products.

  • Parasolid On request

    The embedded kernel in SolidWorks, NX, Solid Edge, and Onshape, supporting native-quality exchange with them.

Curvature combs on an enclosure in the Flux 3D view
1. Shape the enclosure. NVIDIA SMLib creates the rounded contours of the front enclosure. Curvature combs illustrate curve inflection, showing where surfaces transition cleanly or break.
Cross section through an enclosure and its board in the Flux 3D view
2. Check the board inside. Flux splits that same enclosure in half. Inside, you view the displays, the board, and the knob to check each clearance before printing.

Surface quality you can verify. Before tooling begins, zebra stripes, curvature maps, and curvature combs demonstrate that every surface of the part is smooth.

Verification lab

Before you build, it simulates and tests its own work.

Generating designs is only the first step for Flux. The AI engineer uses professional-grade solvers to simulate and to check its own work. Then, it shows these results to you.

Structural simulation

Finite-element stress analysis applied to enclosures, mounts, and brackets.

Thermal evaluation

Simulate heat and airflow for enclosures and boards before you manufacture them.

Airflow modeling

Test cooling and airflow through the enclosure to ensure heat sinks, vents, and fans operate before the first prototype.

Electrical simulation

For analog, power, and mixed-signal circuits, the AI engineer runs and reviews the SPICE simulation.

Electromagnetic analysis

Run a full-wave simulation on the routed board to analyze S-parameters, impedance, crosstalk, and antennas.

Design rule checks

Validate every schematic and board against electrical and manufacturing rules.

Datasheet reviews

For every part, it reads the datasheet and evaluates the design against its limits, ratings, and pinouts.

SPICE load step of a 3.3 V buck converter
SPICE load step of a 3.3 V buck converter
Thermal map of top and bottom copper
Thermal map of top and bottom copper
Stress analysis of an aluminum bracket
Stress analysis of an aluminum bracket
S-parameters of a USB data line, simulated on the routed board
S-parameters of a USB data line, simulated on the routed board

Manufacturing

Collects fabrication quotes as your project evolves.

Flux contacts fabricators directly to receive quotes on circuit boards and assembly, 3D printing in plastic and metal, CNC machining, sheet metal, laser cutting, injection molding, casting, and wiring harnesses. The AI engineer reviews price and lead time, confirms that designs meet the rules of each fabricator, and maintains current quotes when engineers alter the design.

Mechanical parts

  • Craftcloud Craftcloud
  • JLC 3D printing JLC 3D printing
  • PCBWay 3D printing PCBWay 3D printing
  • Shapeways Shapeways
  • OSH Cut OSH Cut
  • SendCutSend SendCutSend

Circuit boards and assembly

  • JLCPCB JLCPCB
  • PCBWay PCBWay
  • OSH Park OSH Park
  • AISLER AISLER

Cables and wiring harnesses

  • MiniProto MiniProto

Why teams stop using desktop tools

All design work in one product

A single project holds the firmware, the board, and the mechanical parts. The agent can adjust the board as well as the mechanical parts at the same time. You do not send files between a code editor, a mechanical tool, and an electronics tool.

Works in your browser

Flux requires no software installations or license server administration. It functions via a modern web browser on any computer.

Each project has one live copy

Distribute your project via URL. Many contributors can make edits at once. Teammates never email files or question which revision is current.

Zero upgrades

Modern capabilities and fresh AI models deploy directly in the software. You never have to install new builds or migrate existing files.

Ready-to-use parts

The Flux library offers 734,000+ public parts. You start without creating a part library.

Start your team in minutes

Send a link to invite engineers. Project-level permissions and single sign-on define what each person sees.

One platform

As well as electronics and firmware.

Flux does not consist of disconnected CAD applications. Instead, it acts as one AI-native engineering platform. Every discipline works on the same project, uses the same data, and relies on the same AI engineer.

  1. USB-C power input schematic in Flux

    Electrical engineering

    Define requirements, research parts, capture schematics, and simulate.

  2. Routed board layout of the ESP32 x86 PC in Flux

    PCB layout

    Design rule checks, stackups, routing, placement, and wiring harnesses between the boards.

  3. STM32 current-loop firmware that Flux wrote and compiled, in a syntax-highlighted code block

    Firmware

    Firmware created for boards designed by Flux, like Arm Cortex-M, RISC-V, AVR, or Pico, then compiled, inspected, and unit tested.

Boards and 3D-printed enclosures made with Flux on a workbench
Real boards and enclosures that Flux created.

Model-agnostic AI

Your favorite AI models. With our engineering expertise.

Frontier AI models offer reasoning. Flux integrates these models with an advanced agent platform created for CAD and EDA. To build working hardware from this reasoning, Flux adds workflows, engineering tools, and project context.

  • OpenAI
  • Anthropic
  • Google Gemini
  • More as they ship
Adaptive model routing

30% lower cost for frontier performance.

Adaptive divides every engineering project into jobs, then directs each job to the model providing the highest value for its cost. Critical design choices rely on frontier models. Repetitive items route to swift, economical models. Unrelated steps run concurrently, so complete hardware comes together faster. Your staff talks to one AI engineer while Flux organizes task assignments automatically.

Frontier AI models

  • Reasoning
  • Planning
  • Language

Flux engineering harness

  • CAD and EDA tools
  • Project context
  • Simulation
  • Design rules

Working hardware

  • Schematics
  • Boards
  • Enclosures
  • Firmware
  • Fab files
  • Product videos

All frontier models, one environment

Inside Flux, use the frontier models that your team already trusts.

Native engineering capabilities

Flux gives its specialized engineering tools, workflows, and project context to every model.

Upgrade without migrations

As superior models arrive, your team adopts them without moving to another engineering platform.

Avoid vendor lock-in

Keep your engineering capacity independent of any one model provider.

A model that fits every step

Adaptive selects a suitable model for each engineering step. Steps range from routine checks up to deep design decisions.

Your designs remain yours.

  • SOC 2-aligned cloud infrastructure
  • Single sign-on (SSO)
  • Project-level permissions
  • You own all inputs and outputs as your IP
  • Zero training on customer data

Flux pricing

  • Explore

    For learning and evaluation, with light AI usage and unlimited manual editing.

  • Build

    For active hardware projects, with included AI usage and additional usage available.

  • Pro

    For larger projects and heavier AI usage, with hands-on support from experienced electrical engineers.

  • Teams

    For teams on shared projects, with pooled AI usage, member seats, and priority support.

Eligible individual plans include a free trial. Teams subscriptions start paid; trial and pricing terms depend on your current offer. See all plans

Not ready to pick a plan? Start for free

When to use which

Select SolidWorks if your engineers need to model assemblies and parts by hand. Pick Flux if you require an AI engineer to develop the firmware, the board, and the mechanical parts for your engineers to review.

Questions

Send Flux your next requirement.

View individual plan offers, or ask our team for a demo.