Speech Data

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SPEECH DATASETS
SPEECH DATASETS

Production-Ready Speech Datasets for Building Reliable AI Across Languages, Voices & Real-World Environments

Speech AI requires diverse, high-quality audio that reflects how people actually speak. OTS Data provides production-ready speech datasets designed for speech recognition, conversational AI, voice assistants, speaker identification, and multilingual applications. Our datasets are carefully collected, transcribed, annotated, and structured to support models that perform reliably across real-world voices, environments, and languages.

  • Multilingual & Diverse Speech
  • High-Quality Audio & Transcriptions
  • Built for Your Speech AI Use Case
Speech Datasets
Speech Datasets

Available Datasets

Sample-Ready datasets can be reviewed within days. Partner-Led collections are scoped around your language, speakers, acoustic environment, target application, and annotation requirements.

Call Center Datset

Use Case: VLA Pretraining / World Models
Format: MP4 + JSON/Parquet
Count: 2,000–10,000 hours*

Request Data

General Conversation Dataset

Use Case: VLA Pretraining / World Models
Format: MP4 + JSON/Parquet
Count: 2,000–10,000 hours*

Request Data

Media Dataset

Use Case: VLA Pretraining / World Models
Format: MP4 + JSON/Parquet
Count: 2,000–10,000 hours*

Request Data

Multilingual Conversational Speech Corpus

Use Case: VLA Pretraining / World Models
Format: MP4 + JSON/Parquet
Count: 2,000–10,000 hours*

Request Data

Monologue Dataset

Use Case: VLA Pretraining / World Models
Format: MP4 + JSON/Parquet
Count: 2,000–10,000 hours*

Request Data

*Volumes shown are indicative and can be scaled based on project requirements. Images are representative and may not reflect actual dataset samples. Request a sample to review the available dataset media.

Compliance
Compliance

Security & Compliance

HIPPA
ISO 9001 : 2015
SOC 2 Type ll
ISO 27001
GDPR
Accurate Data
Accurate Data

Why Choose Us?

Diverse, Real-World Speech Data

Capture natural speech across languages, accents, dialects, demographics, speaking styles, and real-world acoustic environments.

Built for Your Speech AI Use Case

Customize datasets by language, speaker profile, recording environment, audio quality, transcription format, and annotation requirements.

Privacy-First Data Collection

Speech data is collected and processed with appropriate consent, de-identification, and privacy safeguards for responsible AI development.

Human-Validated Transcriptions & Annotations

Expert-reviewed transcriptions and annotations help deliver accurate, consistent, model-ready speech data for training and evaluation.

Frequently Asked Questions
Frequently Asked Questions

Frequently Asked Questions

We provide speech datasets for ASR, conversational AI, voice assistants, speaker recognition, emotion detection, call-center intelligence, voice commands, multilingual applications, and speech understanding.
Yes. Datasets can be tailored by language, accent, dialect, speaker demographics, speaking style, recording environment, and target application.
Depending on the use case, annotations can include transcriptions, timestamps, speaker labels, language and accent tags, emotion labels, intent, sentiment, background noise, and other speech attributes.
Yes. Speech data is collected and processed with appropriate consent and privacy safeguards, including de-identification where required, to support responsible AI development.
Datasets can be delivered in common audio formats such as WAV and MP3, with specifications for sampling rate, bit depth, channels, noise conditions, and transcription or annotation formats based on your model requirements.