MCP
Your agent can now search our catalogue: introducing the Mozilla Data Collective MCP server
Use your favourite LLM or agents to search the MDC data catalogue with our new MCP server
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Common Voice
Common Voice Scripted Speech v27 and Spontaneous Speech v5 are here
Scripted Speech v27 and Spontaneous Speech v5 are now live on the Mozilla Data Collective platform.
News
Get a Sneak Preview of Mozilla Data Collective’s Compensation Feature!
Mozilla Data Collective was built to redefine how AI data is created, shared, and governed. As part of our mission to be the data sharing platform for human agency and fair value exchange, we have long-teased what so many partners and community members have requested: a tangible way to
News
15 Datasets for Fine-Tuning Whisper on a New Language in 2026
Why fine-tuning Whisper is a dataset problem OpenAI's Whisper changed what's possible in speech recognition: a single multilingual model with strong zero-shot performance across dozens of languages. But "dozens" is the catch. But for the long tail of the world's
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How Radio Free Europe/Radio Liberty Also Serves Its Communities Through Its Datasets
For more than 75 years, Radio Free Europe/Radio Liberty (RFE/RL) has promoted democratic values by providing accurate, uncensored news and debate in countries where a free press is threatened. RFE/RL reaches more than 44 million people every week across 18 countries, in 24 languages, including Persian, Russian,
data
What makes a good dataset sample — and how to create one
In this post, we walk you through how to create a useful dataset sample as a preview of your dataset, and guide you in uploading it to the MDC platform.
News
15 Datasets for Building a Low-Resource Translation Model in 2026
The problem with "low-resource" machine translation Most production machine-translation systems in 2026 are still trained on a fairly narrow set of language pairs: the 50 or so for which the open web supplies enough parallel text to push BLEU scores into useful territory. Below that line,
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15 Datasets for Building a Production TTS Voice in 2026
A curated list of 15 text-to-speech training datasets for teams shipping production voice models in 2026 covering emotional, multi-speaker, audiobook-derived, non-Latin script, indigenous-language datasets and more.
News
Open Home Foundation TTS datasets on Mozilla Data Collective
Most voice assistants listen and respond in a handful of languages. Try to build one for your home that speaks your language, though, and you quickly run into a wall: the training data does not exist, or it is locked behind licences that make it unusable for open source projects.
data contributors
Discover Dataset Insights with the new Data Provider Analytics Portal
Today, we're excited to share a new way for dataset providers to better understand how their datasets are being used on Mozilla Data Collective with a new data provider analytics portal.
News
Building an African Voice for AI: Inside the Institute of African Digital Humanities
When you ask a voice assistant a question in English, French, or Mandarin, the underlying models have been trained on billions of words and millions of hours of speech. Ask the same question in Bafia, Mada, or Suundi, and the technology simply doesn't know how to listen. The
News
Never Miss a Dataset with the new Dataset Notification Feature
Today, we're excited to share a new way to stay informed about the latest datasets on Mozilla Data Collective - the ability to subscribe to get updated about similar datasets to your previous downloads.