Self-hosted / open sourceAIHeadquarters: CH

Apertus: sovereignty score and 8 European alternatives

Apertus is a family of open large language models developed by the Swiss AI Initiative, a collaboration of ETH Zurich, EPFL and CSCS. The current version, Apertus 1.5, was released in July 2026. The project publishes weights, training data, code and documentation, so the models can be downloaded and used in own applications. It is positioned as a foundation model for sovereign AI, as an alternative to closed models from commercial providers.

According to their Hugging Face model cards, the models are licensed under Apache 2.0, which allows the weights to run on an organisation's own infrastructure. The development partners are Swiss universities and a research centre, and the site's copyright line names the ETH AI Center and the EPFL AI Center. The project is run by academic institutions, not a commercial owner. Swisscom is named as a strategic partner of the initiative. Switzerland is outside the EU, so for sovereignty purposes what matters most is where the models are run.

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Sovereignty score

94 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-2100
Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
Data residency SOV-3100
Hosting in Switzerland only (recognised by the EU as adequate)
Cryptographic key sovereignty SOV-390
Self-hostable: encryption keys under your own control
Freedom from lock-in SOV-680
Open source: low switching costs
Source & runtime sovereignty SOV-4 · SOV-6100
Source code auditable, forkable and self-hostable

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 October 12, 2026

Headquarters	CH (EU)Verified by hand
Sovereignty model	Open-source, distributedVerified by hand
Data hosting	CHVerified by hand
Open-source	YesVerified by hand
GDPR-compliant	NoVendor-stated
Category	AI
Type	Product
Website	apertvs.ai ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Apertus

The European alternatives to Apertus come from our knowledge base of over 8,000 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

69 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 Apertus

Apertus is headquartered in Switzerland and falls under Swiss law, including the revised Swiss data protection act. Switzerland is not an EU member, but the European Commission recognises its level of data protection as adequate. Its Swiss headquarters does not by itself bring it under US legislation such as the CLOUD Act.

Apertus hosts data in Switzerland only. Switzerland is not part of the EU or the EEA, so the GDPR does not apply there directly; the European Commission does recognise Swiss data protection as adequate, so personal data can go there without extra safeguards. Our model therefore scores it between EU hosting and hosting outside Europe. If you require strictly EU hosting, take this into account.

Apertus is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Apertus 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 Apertus?

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

Are there open-source alternatives to Apertus?

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

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

Apertus is headquartered in CH (EFTA) and hosts data in CH. It is also open-source, so you can self-host it. That makes Apertus 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 October 12, 2026.

Sources

Public sources used in the latest check of this record.

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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