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Terms

FAQs

Participation Guidelines

Responsible Disclosure

News and Documentation

Data and Model Competitions

[email protected]

Mozilla Data Collective is a mission-locked British company, incubated by Mozilla Foundation, and backed by the not-for-profit Mozilla.org

All Datasets

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Search results for “covost 2”

100 Datasets

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Kichwa

A collection of read speech recordings in Kichwa.

License: CC0-1.0

Locale: qvi

Task: ASR

Format: MP3

Size: 250.70 MB

Institute of Finno-Ugric/Uralic Studies, University of Hamburg

INEL Nenets Speech Corpus

A supervised Speech-to-Text dataset for Nenets, a Samoyedic language. Features sentence-level audio aligned with Cyrillic text transcriptions.

License: CC-BY-NC-SA-4.0

Locale: yrk

Task: ASR

Format: TSV, MP3

Size: 8.35 MB

Mozilla Common Voice

Common Voice Spontaneous Speech 5.0 - Konzo

A collection of spontaneous responses to questions in Konzo.

License: CC0-1.0

Locale: koo

Task: ASR

Format: MP3

Size: 280.77 MB

Open Home Foundation

Denis 1.0

Text to speech dataset for Russian, male speaker, approximately 2 hours of read speech.

License: CC0-1.0

Locale: ru-RU

Task: TTS

Format: WEBM

Size: 104.52 MB

Mozilla Common Voice

Common Voice Spontaneous Speech 5.0 - Esperanto

A collection of spontaneous responses to questions in Esperanto.

License: CC0-1.0

Locale: eo

Task: ASR

Format: MP3

Size: 25.13 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Chokwe

A collection of read speech recordings in Chokwe.

License: CC0-1.0

Locale: cjk

Task: ASR

Format: MP3

Size: 263.01 MB

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RFE/RL

RFE/RL Macedonian News Text Corpus

Longitudinal Macedonian news corpus from Radio Slobodna Evropa (2002-2026) with over 204,000 articles and 46M tokens.

License: CC-BY-NC-SA-4.0

Locale: mk

Task: NLP

Format: TXT

Size: 133.95 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Yiddish

A collection of read speech recordings in Yiddish.

License: CC0-1.0

Locale: yi

Task: ASR

Format: MP3

Size: 43.29 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Southern Sotho

A collection of read speech recordings in Southern Sotho.

License: CC0-1.0

Locale: st

Task: ASR

Format: MP3

Size: 4.75 MB

Open Home Foundation

Dimitar 1.0

Text to speech dataset for Bulgarian, male speaker, approximately 2 hours of read speech.

License: CC0-1.0

Locale: bg-BG

Task: TTS

Format: WEBM

Size: 109.58 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Khowar

A collection of read speech recordings in Khowar.

License: CC0-1.0

Locale: khw

Task: ASR

Format: MP3

Size: 376.04 MB

THA_ATLAS

StackOverflow Vector Dataset - C

Language-specific StackOverflow vector dataset for C.

License: CC-BY-SA-4.0

Locale: en-US

Task: RAG

Format: Parquet

Size: 11.07 GB

THA_ATLAS

StackOverflow Vector Dataset - Javascript

Language-specific StackOverflow vector dataset for Javascript.

License: CC-BY-SA-4.0

Locale: en-US

Task: RAG

Format: Parquet

Size: 59.07 GB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Kazakh

A collection of read speech recordings in Kazakh.

License: CC0-1.0

Locale: kk

Task: ASR

Format: MP3

Size: 79.09 MB

TidyVoice2026 Challenge

TidyVoiceX2_ASV

This dataset is designed for speaker verification using the Mozilla Common Voice corpus, covering approximately 40 additional languages beyond those included in TidyVoiceX_ASV. It comprises recordings from different speakers, each of whom appears in multiple languages. Leveraging this multilingual overlap, we construct trial pairs to investigate cross-lingual variation in the speaker verification task. This dataset served as the evaluation set for the TidyVoice 2026 Challenge.

License: CC0-1.0

Locale: mul

Task: OTH

Format: WAV

Size: 23.07 GB

Mozilla Common Voice

Common Voice Spontaneous Speech 5.0 - Breton

A collection of spontaneous responses to questions in Breton.

License: CC0-1.0

Locale: br

Task: ASR

Format: MP3

Size: 21.44 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Mokpwe

A collection of read speech recordings in Mokpwe.

License: CC0-1.0

Locale: bri

Task: ASR

Format: MP3

Size: 182.78 MB

Open Home Foundation

Berta 1.0

Text to speech dataset for Hungarian, female speaker, approximately 1 hour of read speech.

License: CC0-1.0

Locale: hu-HU

Task: TTS

Format: FLAC

Size: 209.52 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Dhivehi

A collection of read speech recordings in Dhivehi.

License: CC0-1.0

Locale: dv

Task: ASR

Format: MP3

Size: 1.32 GB

Mozilla Common Voice

Common Voice Spontaneous Speech 5.0 - Kelabit

A collection of spontaneous responses to questions in Kelabit.

License: CC0-1.0

Locale: kzi

Task: ASR

Format: MP3

Size: 194.34 MB

THA_ATLAS

StackOverflow Vector Dataset - Matlab

Language-specific StackOverflow vector dataset for Matlab.

License: CC-BY-SA-4.0

Locale: en-US

Task: RAG

Format: Parquet

Size: 2.75 GB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Bulgarian

A collection of read speech recordings in Bulgarian.

License: CC0-1.0

Locale: bg

Task: ASR

Format: MP3

Size: 441.55 MB

MDC Curators

Corpus de llenguatge ofensiu en català

This dataset consists of sentences tagged as offensive-language in the version 25.0 release of Mozilla Common Voice in Catalan.

License: CC-BY-SA-4.0

Locale: ca

Task: NLP

Format: TSV

Size: 57.35 KB

Mozilla Common Voice

Common Voice Spontaneous Speech 5.0 - Gorani

A collection of spontaneous responses to questions in Gorani.

License: CC0-1.0

Locale: hac

Task: ASR

Format: MP3

Size: 225.34 MB