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SINGLE COMPARISON

KoAssist vs. Leo AI.

SHORT ANSWER

If your archive lives in PTC Windchill or Siemens Teamcenter and the AI should not only answer but also produce CAD starting models, Leo AI is the better fit. KoAssist pays off when the documents are in German, sit on network drives and in SharePoint, and IT has to show in writing that processing never leaves Europe. In the underlying idea the two are close: answers from your own archive, with a source.

How do KoAssist and Leo AI differ?

CriterionKoAssistLeo AISource
LanguageGerman, with DIN, ISO, VDI and AD 2000 in daily useProduct and support in Englishobserved
Generating CAD geometryNot in scopeEditable starting models for SOLIDWORKS, Onshape, CATIA, Inventorgetleo.ai
Connected systemsSharePoint, OneDrive, Google Drive, network drive, Outlook, Autodesk Vault, SOLIDWORKS PDMPTC Windchill, Siemens Teamcenter, Onshape, SOLIDWORKS PDMgetleo.ai
Office and mail sourcesSharePoint, OneDrive, Outlook, network driveNot named on the product pageno source found
Where documents are storedA synchronised copy in ISO 27001 data centres in GermanyFiles stay in the PLM, PDM or directory; only encrypted vectors are storedgetleo.ai/security
Data centreGermany, language processing in the EU only, no third-country transfersGCP environments, described as storage in your region; no list of countries is publishedgetleo.ai/security
Evidence on fileISO 27001, DPA under Article 28, technical and organisational measures attachedSOC 2 Type II certified, processing according to GDPR principlesgetleo.ai/security
Checking drawings against your own guidelinesA dedicated module, every finding with its rule and its place on the sheetError detection in drawings and 3D models is advertisedgetleo.ai

As of September 2026

Thought from the model, or from the document.

Leo AI starts at the geometry. The company describes its model as trained on native CAD geometry, and everything else follows: connections to the PLM systems where that geometry is managed, and the ability to produce editable starting models. Thinking that way, a part is a body first and paper second.

KoAssist starts at the document. A standard is a text with section numbers, a specification a list of requirements, a drawing a sheet with a title block and dimensions. The task is to find the passage and make it citable, not to build a new model. That is why we produce a page number and not geometry.

The second difference is the legal frame, and it is more concrete than it sounds. Leo stores only encrypted vectors and leaves the original files where they are. Architecturally that is leaner than our synchronised copy. In exchange Leo publishes no list of countries, while we put German data centres, EU language processing and the data processing agreement in writing. Which of the two commitments weighs more is your IT department's call, not ours.

When is Leo AI the better choice?

When the archive lives in Windchill or Teamcenter. Both are connected there and neither is here. For a company with a working PLM that is simply the deciding factor, and no other argument changes it.

When the AI should design and not only answer. Leo produces editable CAD starting models for four common systems. KoAssist cannot do that and does not plan to, because it is a different job.

When no second copy of the documents may exist. Leo stores only encrypted vectors. Where IT makes exactly that a condition, our synchronised copy is the harder conversation, even though it sits in Germany.

When is KoAssist the better choice?

When the documents are in German. Product, support and documentation are German, and the standards world is the local one: DIN, ISO, VDI, AD 2000. That is not a comfort issue but a question of accuracy when a question is asked in German engineering vocabulary.

When the knowledge does not sit in a PLM. Network drives, SharePoint, Outlook and the project archive that has grown over decades are connected here; Leo names Windchill, Teamcenter, Onshape and SOLIDWORKS PDM on its product page. Companies without an end-to-end PLM will not find their archive there.

When IT needs a written commitment. German data centres, language processing in the EU only, no third-country transfers, a data processing agreement under Article 28 and the technical and organisational measures attached. Leo commits to SOC 2 and GDPR principles but publishes no list of countries.

WORKED THROUGH

A company without PLM and thirty years of project folders

A plant builder works with SOLIDWORKS and its PDM, no Windchill, no Teamcenter. Project documentation has been sitting on a network drive for thirty years, sorted by customer name and year. The standards library sits next to it as PDFs, the discussions about it in Outlook.

Leo AI meets a system landscape here that it was not built for. SOLIDWORKS PDM is connected; the network drive and Outlook are not named on the product page. Most of this company's knowledge therefore sits outside.

KoAssist reads both. The question about the 2014 design case leads to the project file, the email with the customer approval and the standard the calculation was based on. What Leo does better in exchange: if the same plant builder needs a new bracket and wants a starting model produced, our remit ends.

To be fair: if this company introduces Teamcenter in two years, the calculation shifts. The knowledge then sits where Leo is at home.

Common questions

What is the difference between Leo AI and KoAssist?
Leo AI is built from the geometry: connections to PLM systems, generation of editable CAD starting models, product language English. KoAssist is built from the document: answers from standards, specifications and project files with file and page, connectors for network drives, SharePoint and Outlook, product language German.
Is there a German-language alternative to Leo AI?
KoAssist is developed in German and built around the DACH standards world, that is DIN, ISO, VDI and AD 2000. Support and documentation are in German and hosting is in German data centres.
Can KoAssist generate CAD models?
No. KoAssist reads drawings and documents and answers questions from them, but produces no geometry. Anyone looking for exactly that is better served by Leo AI.
Does Leo AI need a PLM system like Windchill or Teamcenter?
Leo names PTC Windchill, Siemens Teamcenter, Onshape and SOLIDWORKS PDM as connected systems. Whether a deployment without one of them makes sense is best answered by the vendor.
Where does Leo AI store the data?
Leo states that it stores only encrypted vectors in GCP environments and leaves the original files where they are. A list of countries or regions is not published on the security page.
Can both systems be used in parallel?
Technically nothing prevents it, they reach different sources. Economically it rarely pays: both answer questions from your own archive, and paying twice for that only makes sense if geometry generation and German-language document research are both indispensable.

See it on your own documents.

In the demo we load a handful of your standards, guidelines and drawings and ask the questions that actually come up in your work. After that you will know whether the difference is one in your company.

Book a demo with your own documents