Middle East · Iran
Persian (Farsi) conversational speech dataset
500 hours of spontaneous Persian (Farsi) conversations recorded in Iran across 50 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 | Persian (Farsi) |
|---|---|
| Recorded in | Iran |
| Speech type | Spontaneous two-person conversations |
| Volume | 500 hours |
| Speakers | 50 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 | $65 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 Persian (Farsi) speech:
- Automatic speech recognition (ASR / STT)
- Text-to-speech & voice synthesis prosody
- Voice agents and IVR for Iran
- 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 Persian (Farsi). Read more in our guide to conversational vs. scripted speech data.
Free samples
Audit the Persian (Farsi) 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 Persian (Farsi) speech data vs. this dataset
| Source | What it is | License | Commercial training |
|---|---|---|---|
| CALLFRIEND Farsi Second Edition Speech (LDC2014S01) (opens in a new tab)Linguistic Data Consortium (LDC) | About 42 hours of telephone conversation (100 recordings) among native Farsi speakers living in the United States, recorded in 1995 and 1996. | LDC User Agreement for Non-Members (fee applies; non-commercial research and education only); commercial use requires LDC for-profit membership | Paid license |
| Common Voice Scripted Speech (Persian) (opens in a new tab)Mozilla Common Voice (Mozilla Data Collective) | Read speech recordings in Persian from Mozilla's Common Voice project. | CC0 1.0 | Allowed |
| FLEURS (Persian) (opens in a new tab)Google | Read sentences from the FLoRes translation benchmark, recorded in 102 languages. | CC BY 4.0 | Allowed |
CALLFRIEND Farsi is 100 phone calls recorded in the US in 1995-96 under LDC terms; Common Voice and FLEURS are read. This dataset is two-person conversation recorded in Iran.
Licenses as published by each source, checked October 2026. Check the current terms before use.
FAQ
Frequently asked questions
What does the Persian (Farsi) speech dataset include?
500 hours of spontaneous two-person conversations from 50 vetted native speakers recorded in Iran, delivered as dual-channel audio with time-aligned transcripts, speaker metadata (age, gender, region, device), and consent documentation.
What makes Persian (Farsi) hard for speech recognition?
Spoken Persian differs a lot from written Persian. "Mi-ravam" (I go) becomes "miram" in conversation, and many other words shrink the same way. The Perso-Arabic script leaves out most short vowels, so mapping speech to text needs native data and clear transcription rules.
Is there free Persian (Farsi) speech data?
Yes, Common Voice and FLEURS are free for commercial use. CALLFRIEND Farsi Speech needs a paid license. This dataset is spontaneous two-person conversation recorded in Iran, with speaker metadata, one channel per speaker and signed commercial-use consent.
Can I use this Persian (Farsi) 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 Persian (Farsi) speech dataset cost?
Pricing is $65 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.
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$90/hr