GDPR-Compliant AI Training Platforms: 10 Compared (2026)

Careertrainer.ai runs voice-based AI roleplays for leadership, sales, negotiation and service conversations with immediate feedback. Per the imprint, the operator is Jannik Lindner, based in Baden, Austria: an EU operator whose servers sit in Germany. The vendor documents that split itself, and that is why it ranks second here.

Its GDPR page is the most granular public documentation in this field. The application and database run on Hetzner in Frankfurt am Main, with backups in AWS S3 in the Frankfurt region. There is a named sub-processor list with country and transfer basis for each entry, including OpenAI and OpenRouter in the US under Standard Contractual Clauses. The page states that conversation data is never used for AI model training, and that data processing agreements are in place with every listed provider. What is not publicly documented is an ISO 27001 certification of the vendor itself; the certification named belongs to the data centre.

Vertriebs AI is a German platform for sales conversations with AI personas: cold calling, negotiation, objection handling. The operator per the imprint is MW Software GbR, Hinschstr. 18, 22525 Hamburg. The product targets organizations in Germany, Austria and Switzerland, from five people upwards.

The privacy policy is unusually specific for a vendor this size. AI processing runs exclusively in the Azure region Sweden Central, Firebase in Google Cloud regions europe-west1 and europe-west4, PostHog in the EU data centre in Frankfurt am Main, and speech synthesis through ElevenLabs in an isolated EU environment. Per vendor, conversations and transcripts are not used to train AI models, and a data processing agreement is published at vertriebs-ai.de/avv. An ISO 27001 certification is not publicly documented.

Fioro Technology GmbH, Liebigstr. 7 in Munich, builds AI coaches for sales and communication: roleplays with AI buyers, personalized learning paths and feedback in the flow of practice. The vendor is a German limited company, which shortens the contracting path for European buyers.

Per vendor, hosting is in the EU, the platform is ISO 27001 certified, it is DORA-ready for financial institutions, and customer data is never used to train AI models. The privacy policy names Amazon Web Services EMEA SARL, Microsoft Ireland Operations Limited and Google Cloud EMEA Limited as cloud providers, and repeats that data is not used for training large language models. Which provider holds which data in which region is not publicly documented. A trust center exists at trust.fioro.ai, and its detailed documents are not openly readable there.

3spin Learning GmbH & Co. KG of Darmstadt came out of VR and AR training and added AI conversation practice for communication, leadership and service. For a manufacturer that already runs immersive training, this is the shortest path from a headset programme to spoken dialogue practice.

The data protection page documents hosting in Germany by default on Microsoft Azure infrastructure, ISO/IEC 27001-certified data centres, and alignment with ISO 27001, C5, TISAX and GDPR. Per vendor, your inputs and training data are not used to train or improve the AI models employed, voice inputs are processed only temporarily, and audio recordings are not stored permanently. DPA availability is not documented on that page.

Second Nature AI Inc. is one of the earlier entrants in AI sales roleplay, with offices in Tel Aviv and New York. Simulation quality and the breadth of scenarios from discovery through cold calling are why the platform keeps appearing on shortlists.

Its FAQ answers all three questions. Per vendor, all data is stored in a Google Cloud Platform data center in the Netherlands with AES-256 encryption at rest and in transit; the platform names GDPR, SOC 2 and CCPA; and customer data is never used for AI model training and remains isolated. More than 25 languages are supported, per vendor. What stays open is therefore not transparency but the contracting party: the terms name the law of the State of New York as governing law and New York as the venue, and a US company falls under the CLOUD Act even when the data sits in the Netherlands. An ISO 27001 certification, a DPA and a sub-processor list are not publicly documented.

Retorio GmbH, Landwehrstr. 63 in Munich (HRB 243225, managing director Dr. Patrick Oehler), is among the most visible AI coaching vendors in the German-speaking market and works with video-based behavioural simulations for sales, leadership and service.

Its ethics and privacy page is direct: client and candidate data is hosted exclusively on ISO-certified servers within the European Union per vendor, all servers are ISO 27001 certified, and Retorio describes itself as GDPR compliant and aligned with the EU AI Act. The FAQ goes further and names Google Cloud with EU data residency as the platform, plus the point that Retorio coaches on practice conversations by default, so a programme can run without touching a single live customer recording. The page also states that it does not conduct biometric analysis and does not use biometric data for individual or emotion recognition. On model training, Retorio states on its homepage that it does not train its models on client data and offers a DPA on request there; the ethics page and the FAQ do not spell out either point, documenting only that its models are trained on diverse, bias-mitigated datasets.

Jam Technologies GmbH, Jennerstraße 7a in Munich, combines AI roleplays with talent assessment, call scoring and deal support in one platform. For revenue teams that do not want coaching and conversation analysis living in two contracts, it is the densest bundle in this field.

Per vendor, Jam is GDPR compliant, CyberVadis Silver rated, and operates with EU data residency. The trust center at trust.wejam.ai lists CyberVadis Silver with a score of 831, GDPR, and a Data Processing Agreement as an available document. ISO 27001 and SOC 2 are not listed there. The privacy policy describes processing in Germany and other EEA countries, with third-country transfers on the basis of EU Standard Contractual Clauses. Whether customer data is used for AI model training is not publicly documented.

Hyperbound is operated by IntelligentSystems Corp., 10791 Johnson Ave, Cupertino, CA 95014, USA. The platform pairs AI roleplays with analysis of real recorded calls and coaching agents, and it is one of the better known names in the category in the US market.

Publicly documented in its trust center: SOC 2 Type 1 and 2, ISO 27001:2022 and HIPAA, a Data Processing Addendum for business customers on request, and the statement that Hyperbound does not train on your data and instead uses its own pre-trained datasets. The privacy policy names Anthropic, AWS AI, OpenAI and Microsoft Azure AI as AI service providers. The pricing page lists EU data residency as an add-on for the Enterprise tiers Practice and Perform; it does not apply by default, and the trust center names the United States as the location of all servers. The Californian domicile means the vendor falls under the US CLOUD Act, and that question has to be answered separately from the server question.

Yoodli, Inc., headquartered in Seattle, Washington, has the lowest barrier to entry in this field: communication coaching and roleplays a single person can try without a procurement process. It is one of two vendors here that publish list prices.

Yoodli documents SOC 2 Type 2 certification and describes itself as GDPR compliant. Prices as of 8 September 2026: a free Starter tier with five sessions, Pro at 8 US dollars per month billed annually, Advanced at 20 US dollars per month billed annually, with team and enterprise pricing on request. The training question does get an answer here, and it reads differently from every other vendor on this page: the Terms of Service state that Yoodli may use contributed material to improve or operate the website, explicitly including training models and improving its systems, with no opt-out provided in that document. The clause sits in the general website terms; whether an enterprise agreement departs from it is not publicly documented, and that is the question to put to the vendor in procurement. The FAQ names Google servers as the storage location without a region, and no EU data residency is publicly documented. On top of that comes the CLOUD Act question that applies to any US vendor.