Your file stays safe
The original file stays in the project, unchanged. Flux saves each edit as a new file.
Flux for mechanical design
Meet Flux, your team's AI mechanical engineer.
Flux edits the STEP files you already have, designs parts from real hardware, and checks strength, heat, and airflow before you build.
Edit existing designs
Your CAD files. Edited by AI.
Most mechanical work is a change to a part that already exists. Bring a STEP, IGES, or BREP file from SolidWorks, NX, CATIA, Creo, Inventor, Onshape, or Fusion. Ask for the change in plain words. Flux changes the part and saves a new STEP file and editable CAD code.
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.”
Editable CAD code
Each edit is CAD code that your engineers can open and change. When Flux rebuilds a part as code, it checks the code against your file.
Back to your CAD tool
Export STEP and continue the work in the tool your team uses.
Capabilities
Your mechanical team's favorite teammate.
Designs new parts around real hardware
Ask for a bracket, mount, or enclosure. Flux builds it around the real 3D models of your boards and parts.
Picks the right CAD kernel for each part
OpenCascade, NVIDIA SMLib, and Siemens Parasolid on request. Flux switches kernels when one cannot build a feature.
Checks its own parts before you build
Strength, heat, and airflow simulation on the part, before the first prototype.
Gets the best from every frontier model
Frontier performance at 30% lower cost. Adaptive model selection gives each task to the right model.
Splits big jobs across parallel AI engineers
Give one request. Flux plans the work, runs parts of it at the same time, and reports back.
Workflow
From requirement to a part you can build, Flux does the mechanical work.
-
Start from real parts
One part library for the whole product: 3D models of the electronic parts and other devices in your product, and screws, standoffs, and other mechanical hardware, with stock from McMaster-Carr, MISUMI, and JLCMC.
734,000+ public parts
-
Design and edit
Parametric enclosures, brackets, and mounts, or changes to the STEP files you bring in. Your engineers can open the CAD code and change it.
-
Verify
Strength, heat, and airflow simulation on the part, before the first prototype.
Stress analysis of an aluminum bracket -
Make it
Export STEP, STL, and 3MF, and get quotes from Craftcloud, JLC and PCBWay 3D printing, Shapeways, OSH Cut, and SendCutSend.
-
Craftcloud -
JLC 3D printing -
PCBWay 3D printing -
Shapeways -
OSH Cut -
SendCutSend
-
Interoperability
Connect once. Work with the tools your team already uses.
SolidWorks, NX, Inventor
Edit their STEP files
CATIA, Creo
Bring in parts and assemblies
Onshape, Fusion
Export STEP back to them
3D printers
Print from STL or 3MF
Your tools, through MCP
Connect your internal tools
Your standards
Write them once, every AI engineer applies them
One platform
One AI engineer. Every engineering discipline.
Flux is not a collection of disconnected CAD applications. It is one AI-native engineering platform where every discipline shares the same project, the same data, and the same AI engineer.
-
Mechanical design
Parametric enclosures, brackets, and mounts, fitted to the real board's mounting holes and connectors. Bring in your own STEP models. One parts library for the whole product: chips and connectors, devices that are not on the board, and mechanical hardware such as screws and standoffs.
-
Electrical engineering
Requirements, part research, schematic capture, and simulation.
-
Firmware
Firmware for the board Flux designed, for example on Arm Cortex-M, RISC-V, AVR, or Pico, then built, analyzed, and unit tested.
-
Manufacturing
Live sourcing, cost, and manufacturer-ready outputs.
Collaboration
Your team, your partners, and your AI engineers in one live project.
Flux runs in the browser. Everyone opens the same project, sees the same live design, and works on it at the same time. No files to send back and forth.
-
Edit together in real time.
Engineers, reviewers, and AI engineers work in the same project at the same time. You see who is in the project and what they have selected.
-
Every change is saved.
Flux records each change, who made it, and when. Open any earlier version, or restore it as a new project.
-
One shared space for your organization.
Your organization's projects, parts, and design standards live in one place. Give the whole organization view, comment, or edit access.
-
Work with suppliers, clients, and contractors.
Invite anyone to one project by email, with view, comment, or edit access. They get that project, not the rest of your organization.
-
Review where the design is.
Comment in the project and @mention a teammate. The discussion stays with the design.
-
Try ideas without risk.
Fork a project to test an idea. The main design does not change.
Customizable
Learns your team's rules and follows them on every project.
Every team builds hardware its own way. Teach Flux your standards, connect it to your tools, and let it build the small apps each project needs.
Team knowledge
Onboard Flux like a new engineer. Write your design guidelines, preferred parts, and lessons learned once, and every AI engineer in your organization applies them on every project.
Your rules
Define your layout rules and manufacturer capabilities once. Flux checks every design against them, every time.
Your tools, connected
Connect any MCP server, or give Flux a key to any web API. Push firmware to your repository, read crash reports from devices in the field, or use the tools your team built itself.
Keys stay secret
Admins add API keys once for the whole organization. The AI engineer uses them but never sees them. Flux adds each key only to requests sent to the services you allow.
Interactive pages
Ask for a one-off tool, and Flux builds it as a live page in the project: a power budget calculator that updates as parts change, a bring-up checklist that tracks progress, or a test report with charts.
Flux in your AI tools
Use Flux from Cursor or any general AI agent that supports its tools. Your agents can read and edit Flux projects and hand design jobs to the Flux AI engineer.
Connects to the services your team already uses.
-
Onshape -
Autodesk Fusion -
PTC Windchill -
Siemens Teamcenter -
Arena PLM -
OpenBOM -
Duro -
GitHub -
GitLab -
Memfault -
Golioth -
Particle -
Nordic nRF Cloud -
Edge Impulse -
NI SystemLink -
SimScale -
Octopart -
SiliconExpert
Security
Enterprise security with fine-grained controls.
- SOC 2-aligned cloud infrastructure
- Single sign-on (SSO)
- Project-level permissions
- Inputs and outputs are always your IP
- No training on customer data
Enterprise adoption
We help your team put AI to work.
Flux works directly with engineering organizations to put AI to work on real programs, with hands-on support from Flux engineers.
Book a Demo-
Identify high-value use cases
We map where AI engineering saves your team the most time, from part research to complete devices.
-
Integrate your workflows
We connect Flux to the libraries, rules, and processes your engineers already use.
-
Make it repeatable
We help you establish AI engineering processes your teams can run on every project.
Pricing
Teams and Enterprise
Feature
Teams
$500/month
or $4,900/year
Enterprise
Custom
Seats 5 included, then $100/month per extra seat Custom
AI usage 600 shared AI usage units a month, plus 60 per extra seat Custom
Collaboration Included Included
Model-agnostic AI Included Included
Enterprise integrations Standard Custom
Dedicated onboarding Self-serve Assisted
Forward-deployed engineers — Available
Questions mechanical teams ask.
Yes. Bring in STEP files from tools like SolidWorks, CATIA, Creo, Onshape, NX, and Fusion, and ask for the change in plain words. Flux changes the imported part and saves a new STEP file and editable CAD code.
Yes. Flux changes the part you name and keeps the other parts where they are.
OpenCascade and NVIDIA SMLib, with Siemens Parasolid on request. The AI engineer picks the right kernel for each part, and brings every part together in one model.
Strength, heat, and airflow, so the AI engineer checks its own parts before you build them.
Yes. It has screws, standoffs, and other mechanical hardware with 3D models, next to the electronic parts and devices in your product.
Claude and Codex are general AI agents. They can write CAD scripts, but they cannot open your STEP files, run engineering simulation, or look up real parts. Flux runs the same frontier models inside a complete mechanical engineering environment, in projects that your whole team shares.
Frontier models from OpenAI and Anthropic. Adaptive model selection gives each task to the model that does it best, at 30% lower cost than using the top model for everything.
Flux runs on SOC 2-aligned cloud infrastructure, with single sign-on and project-level permissions. Your inputs and outputs are always your IP, and Flux does not train on customer data.
Yes. Write your design guidelines, preferred parts, and rules once, and every AI engineer in your organization applies them. You can also connect your own tools through MCP.
The same Teams plan as /p/teams: $500 a month with shared seats and AI usage units. One plan covers mechanical, electronics, and firmware work.
The future of hardware engineering is here.
Give your team the tools and AI engineering capacity to build what previously required an entire organization.