Defined.ai is an enterprise AI training data platform offering an off-the-shelf data marketplace plus custom collection, annotation, translation, and evaluation services.
About
Defined.ai is a marketplace and services platform for AI training data, addressing a core bottleneck for machine learning teams: obtaining large volumes of high-quality, ethically sourced, and compliant data. The company combines an off-the-shelf dataset marketplace with custom services spanning the entire AI data lifecycle.
The platform, founded in 2015 by Daniela Braga and headquartered in Seattle with offices in Lisbon, Porto, and Tokyo, sources data from a vetted global community of more than 1.6 million contributors across over 150 markets and 500+ languages, dialects, and locales. Enterprises can license ready-to-use datasets or commission custom collection, annotation, machine translation, and model evaluation, with delivery available via API. Its customer base includes Fortune 500 enterprises, foundation model providers, and AI-first companies in regulated industries.
Key Features
Pricing & Fees
- Pricing: Not publicly listed on the pages we reviewed; check the official site for current plans.
- Compliance: ISO 27001, ISO 27701, and ISO 42001 certified, with GDPR and HIPAA compliance; the company states that all data is collected with informed consent and fair compensation.
- Delivery: Datasets are delivered via API, and the platform offers public API documentation for developers.
- Samples: Free samples are available for datasets in the marketplace.
Who It's For
Defined.ai serves machine learning engineers, AI product teams, and data scientists at enterprises building or refining models in areas such as speech recognition, conversational AI, content moderation, machine translation, and healthcare applications. It is particularly suited to organizations in regulated industries — healthcare, finance, and automotive among them — that need documented data provenance and compliance, as well as teams expanding into multilingual markets that require diverse, locally sourced training data.
FAQ
What is Defined.ai?Defined.ai is an enterprise platform for AI training data, combining a marketplace of 700+ off-the-shelf datasets with custom data collection, annotation, machine translation, LLM fine-tuning, and model evaluation services.
Is Defined.ai free to use?No. Pricing is not publicly listed on the pages reviewed; datasets and services are licensed through sales contact, though free samples are available in the marketplace.
How many languages and contributors does Defined.ai support?The platform draws on over 1.6 million vetted contributors across more than 150 markets, covering 500+ languages, dialects, and locales.
Is Defined.ai compliant with data privacy regulations?Yes. The company holds ISO 27001, ISO 27701, and ISO 42001 certifications and states GDPR and HIPAA compliance, with data sourced through informed consent and fair compensation.
Does Defined.ai offer an API?Yes. Datasets are delivered via API, and the platform publishes API documentation for developers building applications on top of its data.
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