Non-EU vendorAIHeadquarters: US

LangSmith: sovereignty score and 8 European alternatives

LangSmith is a platform from LangChain for building and operating applications and agents based on large language models. It offers observability (tracing of runs and threads, dashboards and alerts), evaluation, prompt engineering and deployment. LangSmith is available as a cloud service, in a hybrid model or self-hosted; self-hosting is an add-on to the Enterprise plan and runs on Kubernetes in your own infrastructure.

LangSmith is a proprietary commercial product of LangChain, a company headquartered in San Francisco, USA, with offices that include Amsterdam. Cloud organisations are hosted in separate regions: on Google Cloud in the US, the EU and Asia-Pacific, and on AWS in the US. With self-hosting, trace and operational data stay in your own environment, although prompts sent through the Playground leave it for external model APIs. Because the provider is a US company, US jurisdiction (the CLOUD Act) deserves attention alongside the storage location.

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Sovereignty score

27 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
Data residency SOV-350
Hosting inside and outside Europe (US, EU, OTHER)
Cryptographic key sovereignty SOV-320
Key management with a non-European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-615
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 October 9, 2026

Headquarters	US (US)	Verified by hand
EU adequacy decision	Only for companies individually certified under the EU-US Data Privacy Framework	Verified by hand
Sovereignty model	Vendor-hosted (non-EU)	Verified by hand
Data hosting	US, EU, OTHER	Verified by hand
Open-source	No	Verified by hand
GDPR-compliant	No	Vendor-stated
Hosting signal	GOOGLE-CLOUD-PLATFORM - Google LLC, US (US)	Technically measured
Category	AI
Type	Product
Website	smith.langchain.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 LangSmith

The European alternatives to LangSmith come from our knowledge base of over 6,200 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 LangSmith

LangSmith is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

LangSmith hosts data in US, EU, OTHER. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.

LangSmith 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 LangSmith 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 LangSmith?

It depends on your use case. Strong EU alternatives to LangSmith include Dust, Brighter AI and H Company. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to LangSmith?

Yes. Open-source EU alternatives to LangSmith include Dust, Hopsworks and Kyutai. These keep your data fully under your own control and let you self-host if you want to.

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

LangSmith is headquartered in US and hosts data in US, EU, OTHER. Its GDPR compliance is limited or unclear. For full EU data residency the EU alternatives on this page usually offer more certainty.

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 9, 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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