Vendor shortlist
Domain expert data providers in Europe
If your data cannot leave the EU, the US vendor shortlists do not help. These are the providers with a European entity, what they actually deliver, and where the residency promise holds.
An EU address is the start, not the answer. Residency fails in three places: the parent company's jurisdiction, where annotators sit, and which sub-processors touch the data. The table shows each provider's model; the checklist below shows what to ask in writing.
providers with a European entity
built around domain experts
crowd or participant platforms
that keeps experts, storage and processing in the EU
Vendor facts come from the vendors' own material and widely cited public sources as of October 2026; pricing is per quote unless the vendor publishes it. Pathwize is EU-native: all data stays within the EU.
What to verify before signing
01
Where annotators sit
Crowd platforms are global by design. Ask for the countries of the people who will see your data, and whether access can be restricted to the EU.
02
Parent company
A US parent can be compelled under the CLOUD Act regardless of where the EU entity stores data.
03
Sub-processors
Cloud, tooling, support. Each is a transfer if it sits outside the EU.
04
Contractual commitment
Residency in the processing agreement, not in a sales deck.
The shortlist
| Vendor | Model | Best for | Pricing | EU residency |
|---|---|---|---|---|
Pathwize Cologne, Germany | Credentialed experts and students from a 200k+ network, qualification test on your own data, paid per hour German GmbH, EU infrastructure, experts from Europe; qualification test on your data. | Expert annotation, evaluation and red teaming in regulated fields | Per hour, quoted per task; free pilot on 50 items | Yes |
Toloka Amsterdam, NL | Global crowd platform with expert tracks Dutch entity in Nebius Group; crowd is global, so restrict annotator countries in the contract. | High-volume labeling, pay-as-you-go | Pay-as-you-go | Yes |
Clickworker (LXT) Essen, DE | Crowd platform, acquired by LXT in 2025 German origin, now part of a Canadian group; check where data and crowd sit. | Microtasks, speech and text collection | Per task | Partial |
Prolific London, UK | Verified research participants UK adequacy applies; participants are global. | Preference studies with demographic control | Reward plus platform fee | Partial |
Giskard Paris, FR | Evaluation and red teaming software Software, not a workforce. | Automated testing with EU AI Act alignment | Open source free; enterprise per quote | Yes |
LatticeFlow AI Zurich, CH | Model assessment software Switzerland has an EU adequacy decision; software, not a workforce. | AI Act compliance checks | Per quote | Yes |
Defined.ai Lisbon, PT / US | Managed crowds for speech and NLP data Portuguese roots with a US entity; verify the contracting party. | Speech and language datasets | Per quote | Partial |
Pathwize
Cologne, Germany
Credentialed experts and students from a 200k+ network, qualification test on your own data, paid per hour
Best for: Expert annotation, evaluation and red teaming in regulated fields
Pricing: Per hour, quoted per task; free pilot on 50 items
German GmbH, EU infrastructure, experts from Europe; qualification test on your data.
Toloka
Amsterdam, NL
Global crowd platform with expert tracks
Best for: High-volume labeling, pay-as-you-go
Pricing: Pay-as-you-go
Dutch entity in Nebius Group; crowd is global, so restrict annotator countries in the contract.
Clickworker (LXT)
Essen, DE
Crowd platform, acquired by LXT in 2025
Best for: Microtasks, speech and text collection
Pricing: Per task
German origin, now part of a Canadian group; check where data and crowd sit.
Prolific
London, UK
Verified research participants
Best for: Preference studies with demographic control
Pricing: Reward plus platform fee
UK adequacy applies; participants are global.
Giskard
Paris, FR
Evaluation and red teaming software
Best for: Automated testing with EU AI Act alignment
Pricing: Open source free; enterprise per quote
Software, not a workforce.
LatticeFlow AI
Zurich, CH
Model assessment software
Best for: AI Act compliance checks
Pricing: Per quote
Switzerland has an EU adequacy decision; software, not a workforce.
Defined.ai
Lisbon, PT / US
Managed crowds for speech and NLP data
Best for: Speech and language datasets
Pricing: Per quote
Portuguese roots with a US entity; verify the contracting party.
Where Pathwize fits
Pathwize is a German company with EU infrastructure and experts who live in Europe. That covers all three residency failure points at once: entity, annotators and processing.
The network is built around people with credentials, not microtasks. Each expert passes a qualification test on your own data; you approve who continues; every item records who, when and how long.
For speech collection or million-item crowd jobs, the crowd platforms above are the better tool. Pathwize is for the work where a wrong label needs a domain expert to spot it.
FAQs
Providers with an EU entity and EU infrastructure, and a residency clause in the processing agreement. Pathwize (Germany) keeps entity, infrastructure and experts in the EU. Toloka (Netherlands), Giskard (France) and LatticeFlow (Switzerland) have European entities; check annotator location and sub-processors for each.
Switzerland holds an EU adequacy decision, so transfers to Swiss providers are permitted under GDPR. Whether your own policy treats Switzerland as in scope is a separate decision.
A vendor whose annotators or evaluators hold credentials in the field of the data: physicians for medical data, engineers for technical drawings, lawyers for contracts. Pathwize and Mercor are built this way; crowd platforms add expert tracks on top of a general workforce.
Usually within a few days. You send the task, the classes or rubric and a few examples; qualified experts take the test on your data; you approve who continues. A 50-item pilot is free.
Per hour of expert work, quoted per task depending on the domain and the complexity. Time is tracked automatically per item, so you see cost per item and per class in the dashboard and in the export.
In the EU. Pathwize is based in Cologne, Germany; storage and processing run on EU infrastructure, and experts work from Europe. Sensitive data can be worked in a no-download environment.
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