Europe · Greece
Greek conversational speech dataset
1,000 hours of spontaneous Greek conversations recorded in Greece across 100 vetted native speakers. Dual-channel audio with time-aligned transcripts, speaker metadata (age, gender, region, device), and full chain-of-consent documentation. Licensed for commercial ASR, TTS, and voice AI training.
Dataset specifications
| Language | Greek |
|---|---|
| Recorded in | Greece |
| Speech type | Spontaneous two-person conversations |
| Volume | 1,000 hours |
| Speakers | 100 vetted native speakers |
| Audio | Dual-channel (one channel per speaker) |
| Transcripts | Time-aligned, human-verified |
| Metadata | Age, gender, region, recording device |
| License | Commercial (training & evaluation) |
| Price | $85 per hour of audio |
Need more hours, another dialect or your own recording setup? We collect speech data to spec.
Built for
Training and evaluating speech models that must handle real Greek speech:
- Automatic speech recognition (ASR / STT)
- Text-to-speech & voice synthesis prosody
- Voice agents and IVR for Greece
- Speaker diarization & turn-taking models
- Speech LLM / audio-understanding fine-tuning
Why conversational data?
Models trained on read speech consistently underperform on spontaneous audio. Disfluencies, overlap, and natural speech rates aren’t in the training distribution. This dataset closes that gap for Greek. Read more in our guide to conversational vs. scripted speech data.
Free samples
Audit the Greek data yourself
Share your company email and we’ll email you representative audio, matching transcripts, and the metadata schema. Check audio quality, transcript accuracy, and speaker diversity before you spend a dollar.
Public alternatives
Public Greek speech data vs. this dataset
| Source | What it is | License | Commercial training |
|---|---|---|---|
| Mozilla Common Voice Greek (Scripted Speech) (opens in a new tab)Mozilla Common Voice (via Mozilla Data Collective) | Read speech recordings in Greek from Common Voice volunteers; the Spontaneous Speech release covers Cypriot Greek only. | CC0 1.0 | Allowed |
| Google FLEURS (el_gr) (opens in a new tab)Google | Read sentences from the FLoRes benchmark, locale el_gr. | CC BY 4.0 | Allowed |
Free Greek data here is read sentences, and Common Voice's spontaneous release covers Cypriot Greek only; this dataset is spontaneous two-person conversation recorded in Greece, licensed commercially.
Licenses as published by each source, checked October 2026. Check the current terms before use.
FAQ
Frequently asked questions
What does the Greek speech dataset include?
1,000 hours of spontaneous two-person conversations from 100 vetted native speakers recorded in Greece, delivered as dual-channel audio with time-aligned transcripts, speaker metadata (age, gender, region, device), and consent documentation.
What makes Greek hard for speech recognition?
Greek has its own alphabet, and several letters and letter pairs spell the same sound. The "i" sound alone has six common spellings, so turning speech into correctly spelled text is harder than in most European languages. Stress position changes meaning, and conversation moves fast.
Is there free Greek speech data?
Yes, Mozilla Common Voice Greek and Google FLEURS are free for commercial use. This dataset is spontaneous two-person conversation recorded in Greece, with speaker metadata, one channel per speaker and signed commercial-use consent.
Can I use this Greek dataset commercially?
Yes. The dataset is licensed for commercial use, including training ASR, TTS, and other voice-AI models. Every speaker has signed explicit commercial-use consent, and we provide the full consent chain for your legal review.
How much does the Greek speech dataset cost?
Pricing is $85 per hour of audio. Volume discounts are available for full-dataset and multi-language purchases. Contact us for a quote.
Can I evaluate samples before buying?
Yes. Request samples with your company email, and we'll email you representative audio files and matching transcripts so your team can audit quality before committing.
$85/hr