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
FAQ: How long does it take to publish my dataset on MDC?
We review every request to become a data provider on Mozilla Data Collective. Reviewing Uploader Requests If you have not already been in contact with our team about uploading data to Mozilla Data Collective, a member of our team will reach out to you via email to discuss your dataset
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.
FAQ: How can I contribute to Mozilla Data Collective?
We are a collective of linguists, technologists, activists, researchers and creatives. Whether you’re interested in stewarding data, conducting research, developing new AI and ML technologies, or just want to be part of our community working to make AI all it promises to be - not all it threatens to
FAQ: Do I need to be part of an organization to upload a dataset to Mozilla Data Collective?
No, you do not need to be a part of an organization to upload a dataset to Mozilla Data Collective. We recognize that there are many use cases where an individual might want to share datasets that they have created, either on their own or on behalf of a group.
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
Uploading your dataset to the Mozilla Data Collective Platform
Interested in joining the movement and publishing your dataset on Mozilla Data Collective? This guide will walk you through the steps required, from account creation to submission!
FAQ: What does it mean to exclusively host my dataset on Mozilla Data Collective?
When you upload a dataset to Mozilla Data Collective, you have the option to make your dataset exclusive to MDC. The default terms of use for data providers on the platform is that datasets are exclusive to MDC. Choosing to host your dataset exclusively with MDC means that you do
FAQ: What kind of datasets can I publish on Mozilla Data Collective?
Our priority is technology that is more multilingual, multicultural, and multi-modal. We prioritise helping communities unlock content that is not on the web already, and prefer audio, image, and video formats, though we will also accept text documents that advance the above goals. Our expectation is that each dataset is
FAQ: What are the main points of the MDC Terms of Use?
About downloading and using datasets When downloading a dataset, am I getting permission to use it from Mozilla Data Collective or the Data Provider? When you download a dataset from Mozilla Data Collective, you are entering into an agreement with the Data Provider who published the dataset. Data Providers set
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.
FAQ: Why can’t I download old versions of Common Voice datasets?
In order to better serve our community and to keep up with current changes in best practices for data stewardship, we are changing how previous releases of the Common Voice datasets are accessed. They will now be accessible to interested researchers and others via an email-based request process. You will