AI Assistant · inside XFEM4U
Ask the manual. Get the page.
The AI Assistant in XFEM4U answers “how do I…” questions from the XFEM4U manual and gives you the page it used, so you can read it yourself. It never designs or checks your structure: the analysis stays with the solver.
Free download · first hour free · €100 welcome credit when you register · then pay per use · no credit card · Windows
How do I switch on second-order analysis?
Open Calculation settings, in the Results group of the General ribbon. Under Analysis, choose Geometric non-linear (GNL). If a Eurocode check for steel or timber is switched on, XFEM4U always uses GNL, and it adds the global sway imperfections of EN 1993-1-1 art. 5.3.2(3)a in +dx and −dx, so every ULS combination is calculated twice.
The assistant is told to say when a result must be verified by hand.
Answers from the manual, with the page.
It does
- Answer “how do I…” questions about XFEM4U: where a setting is, what an option does, how to model something.
- Answer from the XFEM4U manual, and give you the page so you can read it yourself.
- Answer in the language you ask in. The manual it reads is in English.
- Say when something must be verified by hand, and never present an estimate as a code check.
It doesn’t
- Design or check your structure. The analysis and the Eurocode checks come from XFEM4U, in the report.
- Know the manuals of the other programs. It covers XFEM4U.
Inside XFEM4U.
You ask in the program, next to your model. For XFrame2D, XBeam2D and XConstruct, the manuals are online.
XFrame2D · XBeam2D · XConstruct
A question about your model or your licence? Our support team answers those. Support
Monthly allowances. Prices from the price list, excl. VAT.
Free with every account.
The Free plan comes with every account. Basic and Pro are there if you ask a lot.
FreeIncluded
€0/month
about 100 questions a month
Included with every account
Basic
€9/month
about 600 questions a month
For regular use
Pro
€29/month
about 4,000 questions a month
For heavy use
Question counts are estimates for single questions: a long conversation counts for more, because it goes along with each new question.
Prices per month, excl. VAT. Price list October 2026. Buy, change or cancel a plan in your account.
This describes the service as deployed in September 2026.
What happens to your question.
Plainly, from the way the service is set up:
| Where it goes | XFEM4U sends your question, with the conversation so far, to Struct4U’s server. The server forwards it to OpenRouter to get the answer. The OpenRouter key never leaves our server. |
|---|---|
| What goes with it | The XFEM4U manual, so the answer can come from it. |
| What we store | For each request, the number of tokens used and the cost, to apply your plan. Never the text of your question or of the answer. |
AI-generated Answers are generated by AI. Read the manual page before you rely on one.
Questions
01Is the AI Assistant free?
Yes. The Free plan comes with every account and covers about 100 questions a month. Basic (€9 a month) and Pro (€29 a month) raise that to about 600 and about 4,000.
02Which manual does it read?
The XFEM4U manual, in English. You can ask in Dutch as well: it answers in the language you ask in.
03Is my question stored?
No. We store how many tokens a request used and what it cost, never the text of the question or of the answer.
04Can it check my calculation?
No. It answers questions about using XFEM4U. The analysis and the Eurocode checks come from XFEM4U itself, in the report, where you can follow every step.
Ask your first question in XFEM4U.
Download XFEM4U free and register: the Free AI plan is included, and you get €100 of pay-per-use credit as a welcome gift.