FAQ
FAQ: Why can’t I download old versions of Common Voice datasets?
We limit access to old versions of Common Voice to respect those speakers who have withdrawn their consent to be included in the dataset.
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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.
FAQ
FAQ: I've noticed an issue with a data listing - what do I do?
Depending on the nature of the issue, you can contact the dataset uploader, use the report dataset link, or contact us directly.
Kick-off of the Shared Task: MCV Spontaneous Speech
Join us for the official kick‑off of the Shared Task: Mozilla Common Voice Spontaneous Speech! This live, online gathering will bring together researchers, engineers, and language‑technology enthusiasts from around the world to launch the challenge focused on building robust, multilingual ASR systems for under‑represented languages. In a
FAQ
FAQ: Why can't I re-host or share Common Voice datasets that I download from MDC?
By exclusively hosting Common Voice datasets on MDC, we are best able to govern and respect the wishes of contributors.
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
News
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
News
Mozilla Data Collective Alpha Goes Live
Mozilla Data Collective is now in live alpha, offering the Common Voice 23.0 datasets.
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Your datasets, under your control: Mozilla Data Collective at PyConAU in Melbourne, Australia
Kathy Reid's presentation to PyConAU in Melbourne, Australia covers tokenomics, harvesting tokens, and how Mozilla Data Collective offers a better way forward.
FAQ
FAQ: What is the MDC Public API?
The Mozilla Data Collective REST API provides a way for developers to access datasets from their own applications, using the programming language of their choice.
FAQ
FAQ: Can I get the Common Voice or other MDC datasets from other platforms like GitHub or Hugging Face?
Common Voice datasets are exclusively available through Mozilla Data Collective.
News
Roadmap
We're excited to share a high-level roadmap for the Mozilla Data Collective platform, leading up to our 1.0 launch in early Q1 2026: September: Mozilla Data Collective Alpha Launch October: New Datasets Available November: Mozilla Data Collective Beta Launch * Dataset and datasheet on-boarding and upload