EU sovereignAIHeadquarters: FR

Lettria: sovereignty score and 8 European alternatives

Lettria develops software that turns unstructured documents into structured, traceable knowledge. Knowledge Studio is a no-code platform for regulated sectors such as finance, healthcare, legal and engineering. It parses documents, builds ontologies, converts text and tables into a knowledge graph and retrieves information through graphs (GraphRAG), with references to the source. Perseus is aimed at developers who generate ontologies and knowledge graphs for graph agents. For complex projects, Lettria also provides hands-on support from its own specialists.

Lettria is a French company; its operating entity, TURFU SAS, is registered in France. According to Lettria, Knowledge Studio customer data is stored on servers in Europe. The privacy policy lists hosting providers storing data in the EU, but also service providers outside the EU, for example for CRM and email, that store data in the United States under standard contractual clauses. The security page shows AWS and OVHcloud as partners. Lettria is not open source and does not mention an on-premise option. No foreign parent company is stated.

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Sovereignty score

71 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-2100
Headquartered in the EU: European law applies
Data residency SOV-3100
EU-only hosting
Cryptographic key sovereignty SOV-360
Key management with a European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-655
Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked July 2, 2026

Headquarters	FR (EU)Verified by hand
Sovereignty model	Vendor-hosted (EU)Verified by hand
Data hosting	EUVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Hosting signal	CLOUDFLARESPECTRUM - Cloudflare London, LLC, US (US)Technically measured
Category	AI
Type	Product
Website	lettria.com ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Lettria

The European alternatives to Lettria come from our knowledge base of over 6,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

55 European AI vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Lettria

Lettria is headquartered in FR and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

Data is hosted exclusively in the EU, so Lettria scores best on data residency.

Lettria is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Lettria together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Lettria?

It depends on your use case. Strong EU alternatives to Lettria include Aleph Alpha, Almato and Almawave. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Lettria?

Our list of EU alternatives to Lettria is mostly commercial options. Browse the category on the map for open-source choices.

Is Lettria GDPR-compliant and where is the data hosted?

Lettria is headquartered in FR (EU) and hosts data in EU. That makes Lettria an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on July 2, 2026.

Sources

This record was checked via the vendor's website and legal notice during the full audit of June and July 2026. Source links have been recorded per record since 20 September 2026.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in AI

AI: Artificial intelligence — large language models, translation, generative AI. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

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