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Embrace ethical AI effortlessly with our data marketplace. Partner with us to access transformative solutions with ethically collected data.

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Speech Datasets

19k+ hours across 11 domains & 14 regions for diverse speech recognition applications.
Scripted Speech
Multilingual
Speech Recognition
Find your ideal dataset

Find your ideal dataset

Browse the world's largest data marketplace for training AI and download free samples. Ethically collected, high quality, fast delivery.

Why Defined.ai?

Ethically sourced data and transparent practices

Ethically sourced data and transparent practices

Our data is collected and managed with the highest ethical standards, ensuring that the development of AI solutions is responsible and fair. We maintain transparency in our data collection and handling processes, prioritizing the privacy and trust of our clients and data contributors.

Elite AI Expertise

Elite AI Expertise

Work with a world-class team of AI experts who bring game-changing experience and deliver data you can trust. From top-tier talent to rigorous quality control, we ensure your projects reach new heights with accurate, dependable results that fuel AI innovation.

Extensive data & evolution

Extensive data & evolution

Tap into our broad spectrum of off-the-shelf datasets and rely on Defined.ai's commitment to perpetual dataset development to stay ahead in AI innovations.

Tailored datasets

Tailored datasets

Optimize AI solutions using our customizable off-the-shelf datasets, which can be sliced and tailored to your requirements, aligning with project goals and maximizing value.

Trusted by

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What our customers say

Defined.ai transcription accuracy is excellent, quickly adapting labeling guidelines for new concerns and evolving priorities as they arise. They’re more than our transcription & annotation vendor - they are our partner and enabler in achieving state-of-the-art ML performance.

Ben Stern

VP, Software Systems R&D
@Interactions
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Defined.ai provides access to our premium, commercially-safe visual content to help create high-quality GenAI solutions that respect creators’ rights and deliver exceptional performance.

Peter Orlowsky

SVP of Global Strategic Partnerships
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We are thankful for Defined.ai’s unrelenting efforts in creating video, audio, and word datasets, carefully scripted and crafted yet delivered at an extremely high velocity for our neural networks to iterate and improve continually. We are delighted by their rigor and reliability. When all levers are churning, and engines are firing – music is created.

Saurabh Saxena

Head of Technology, VP R&D (EmotionAI)
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The Virtual Assistant project launched by AMA, through the strategic partnership with Defined.ai embodies the fusion between innovation and technology, boosting the public sector with private sector knowledge. This combination of efforts and expertise has enabled the creation of an AI solution at the service of the public sector Portuguese.

João Dias

President @AMA - Agência para a Modernização Administrativa, IP
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About us

Defined AI, founded in 2015 by Dr. Daniela Braga, curates ethical, high-quality data for AI. Backed by over $85M in funding, we offer exclusive data through our Neevo platform, non-exclusive data via our marketplace, and the Accelerat.ai solution, supported by Portugal’s Recovery and Resilience Plan. Recognized by the World Economic Forum, United Nations, and Forbes, we are a global leader in AI innovation.

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We can also help with

Explore our diverse range of offerings, projects, and opportunities to connect, designed to enhance and support your AI journey:

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