News
MDC Release Notes - 27.02.26
This week: dataset filtering, enhanced uploader request flow, API improvements, and 20 new datasets!
News
News
MDC Release Notes - 13.02.26
This week: new features for uploaders, updates to dataset search, and new datasets on MDC!
News
Help Shape the Future of Mozilla Data Collective
Mozilla Data Collective has an amazing opportunity for you to get a free ticket to the 2026 Mozilla Festival in beautiful Barcelona, Spain this November, 2026. We are looking for feedback to inform our 2026 roadmap. Help shape the future of ethical data-sharing by filling out the form below
News
Latest: Asian Language datasets by communities on Mozilla Data Collective
The internet belongs to everyone—but right now, it doesn't work for everyone. From the islands of Borneo to the mountains of Pakistan, hundreds of millions of people speak languages that AI simply can't understand. That's a problem we can solve together. At Mozilla
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Latest: African Language datasets by communities on Mozilla Data Collective
The internet belongs to everyone—but right now, it doesn't work for everyone. Millions of people speak languages that AI simply can't understand, and that's a problem we can solve together. At Mozilla Data Collective, we're proud to host a growing collection
News
Updates to MDC REST API and Python Library
Tl;dr: Update to newest version of the MDC Python library (0.2.0 or newer) to continue downloading datasets
Common Voice
Pashto becomes third-highest language by volume of data in Common Voice v24
Key highlights from the Common Voice v24 Scripted Speech and v2 Spontaneous Speech release.
Common Voice
Improving the Spontaneous Speech English dataset: lifting the lid on speech data quality uplift techniques
Firstly, we’d like to thank you for your patience. After introducing Spontaneous Speech early in 2025, we released most locale datasets when the Mozilla Data Collective platform launched in alpha in September of this year. However, upon inspection, the English Spontaneous Speech dataset required some remedial work prior to
News
What do the languages Nahuatl, Bahasa Indonesia and Bulgarian have in common?
Nahuatl, Bahasa Indonesia and Bulgarian all feature in our very first community curated datasets to be uploaded to the Mozilla Data Collective platform.
Common Voice
We're Changing Access to Older Versions of Common Voice datasets
We’re tightening the circulation of old datasets to protect contributors, while keeping a clear, documented path for researchers who need them.
News
Shared Task: Mozilla Common Voice Spontaneous Speech ASR
Quick links * Registration Form * Link to datasets * Codabench page (to submit results during the testing period) * Contact: [email protected] Overview Automatic speech recognition (ASR) has come a long way – but most systems are still trained on polished, read-aloud speech. So we set out to build a model that
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Common Voice 23.0 Live On Mozilla Data Collective
Common Voice 23.0 is now live – and available for download via Mozilla Data Collective. Mozilla Data Collective is a sister platform from the team behind Common Voice, designed to let dataset owners and creators offer their data on their own terms. Mozilla Data Collective was built in response to