PFD Bench by lyfX.ai
You didn’t become a process engineer
to write documentation.
Upload a Process Flow Diagram. Get an accurate process description in minutes, not hours.
PFD Bench in one minute
What engineers say
K-UTEC AG Salt Technologies, Germany
Every PFD tells a story.
Writing it down shouldn’t take all day.
Turning process diagrams into documentation is a typical bottleneck every engineering team knows but nobody talks about.
📋
Manual cataloging
Listing every equipment item, tag, and stream by hand
🔗
Tracing connections
Following inlets, outlets, and recycle loops one by one
✍️
Writing descriptions
Translating visual flow into consistent, accurate prose
🔄
Updating everything
Redoing it all when the diagram changes
PFD Bench reads diagrams like an engineer.
Structural parsing, not pixel reading. That’s why it works on complex, real-world PFDs.
①
Upload
Standard DXF export from your CAD tool (AutoCAD, MicroStation, etc.)
②
Extract
Equipment, tags, and connections, parsed from structure, not pixels
③
Verify
Cross-check for consistency with a human-in-the-loop review step
④
Generate
A process description you can edit, refine, and export
95%+
Accuracy on complex, real-world Process Flow Diagrams
Why engineers love PFD Bench
⚡
From hours to minutes
What took half a day becomes a quick review. Your engineers spend time on engineering, not transcription.
🎯
Consistent and complete
Standardized output every time. Fewer missed tags, fewer “did we include everything?” moments.
🔒
Your data, your server
Dedicated deployment: on-premise or single-tenant VM. Your diagrams never touch shared infrastructure.
“Can’t I just use ChatGPT?”
| Capability | General-purpose AI | PFD Bench |
|---|---|---|
| Simple PFDs (< 10 items) | Rough draft | ✓ |
| Complex PFDs (dozens of items, recycle loops) | ✗ | ✓ |
| Parses diagram structure (not just image) | ✗ | ✓ |
| Cross-checks connections automatically | ✗ | ✓ |
| 95%+ accuracy on real-world diagrams | ✗ | ✓ |
| Human-in-the-loop verification | ✗ | ✓ |
| Dedicated deployment / data privacy | ✗ | ✓ |
PFD Bench was built because general-purpose AI wasn’t good enough. We know: we tried it first.
See what PFD Bench saves your team
Drag the sliders to match your team’s workload
Includes review and revision time.
Built in collaboration with process industry engineers
Dr. Andre Moreira
Co-founder & Managing Director, lyfX.ai
With a PhD in Physics and over a decade at BASF working across chemicals, fertilizer, and energy, Andre built PFD Bench because he understood the bottleneck firsthand. At lyfX.ai, he applies state-of-the-art AI to solve real problems in process industries. PFD Bench is the tool process engineering teams wished existed earlier.
How PFD Bench started
It began in December 2024, when an engineer from our partner K-UTEC AG Salt Technologies asked if we had a good prompt for turning a process diagram into a written description.
We tried it over a Saturday morning with the first vision-capable AI models. For a very simple PFD, it worked. Then reality hit. On real-world PFDs (complex, dense, with dozens of equipment items) the errors were too many. It wasted time rather than saving it.
So in mid-2025 we started building PFD Bench: a dedicated tool that parses diagram structure, cross-checks connections, and uses carefully engineered prompts to deliver reliable results. Getting from “curious demo” to 95%+ accuracy on complex diagrams took more work than we expected.
But every process engineering team we talked to had the same bottleneck. So we turned it into a product.
What you get with PFD Bench
Everything included in your evaluation access
✅ Dedicated instance — your own environment, no shared servers
✅ Test with your PFDs — upload real diagrams from your projects
✅ Onboarding walkthrough — live session to get your team started
✅ Direct support — from the people who built it
✅ Full edit & export — review, refine, and download your descriptions
✅ DXF support — works with AutoCAD, MicroStation, and standard CAD exports
🔒 We onboard a limited number of evaluation teams per month to ensure hands-on support
Common questions
How accurate is the extraction?
PFD Bench consistently identifies the correct equipment and achieves over 95% accuracy for connections (how streams connect equipment to each other). The verification step lets you catch and correct any gaps before generating the process description.
What file formats are supported?
DXF exports from standard CAD tools (AutoCAD, MicroStation, etc.). PDF support is on the roadmap.
Can I edit the generated descriptions?
Yes. The output is fully editable before export. You have complete control over the final document.
What about confidentiality?
Dedicated deployment is available: your diagrams stay on your infrastructure, no shared servers. The only data leaving your environment are the API calls to state-of-the-art LLMs. Using local LLMs for maximum privacy is on the roadmap.
How much does it cost?
We offer evaluation access so you can test with your own PFDs. Book a demo and we’ll walk you through pricing for dedicated instances based on your team’s needs.
Can I use it for P&IDs too?
Yes, but the accuracy is not as high as with PFDs. We are already working on expanding PFD Bench’s capabilities for P&IDs with high accuray.
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