Dataset catalog

Conversational speech datasets in 60 languages

Each speech dataset comes with dual-channel audio, time-aligned transcripts, speaker metadata and documented consent, under a commercial license for ASR, TTS and voice AI training. Missing a language or dialect? We run custom speech data collection to your spec.

Showing 60 of 60 datasets

Buyer guides

Before you buy

How to buy AI training data

How to vet a vendor on consent and QA, and the license terms to check before you sign.

Speech data licensing

Exclusive or non-exclusive, who owns the model, consent, and the clauses to ask for.

Open vs licensed speech datasets

When a free corpus is enough, and when its license or speaking style rules it out.