Capability breakdown: Not every language supports all three features. Transcription requires a trained speech recognition model. Voice cloning requires a compatible TTS model. Translation is available for all 30 languages.
Language matrix
| Flag | Language | Code | Transcription | Translation | Voice Clone |
|---|---|---|---|---|---|
| 🇺🇸 | English | eng | ✓ | ✓ | ✓ |
| 🇪🇸 | Spanish | spa | ✓ | ✓ | ✓ |
| 🇧🇷 | Portuguese | por | ✓ | ✓ | ✓ |
| 🇫🇷 | French | fra | ✓ | ✓ | ✓ |
| 🇩🇪 | German | deu | ✓ | ✓ | ✓ |
| 🇮🇹 | Italian | ita | ✓ | ✓ | ✓ |
| 🇯🇵 | Japanese | jpn | ✓ | ✓ | ✓ |
| 🇰🇷 | Korean | kor | ✓ | ✓ | ✓ |
| 🇨🇳 | Chinese | zho | ✓ | ✓ | ✓ |
| 🇳🇱 | Dutch | nld | ✓ | ✓ | – |
| 🇷🇺 | Russian | rus | – | ✓ | ✓ |
| 🇮🇳 | Hindi | hin | – | ✓ | – |
| 🇸🇦 | Arabic | ara | – | ✓ | – |
| 🇮🇩 | Indonesian | ind | – | ✓ | – |
| 🇹🇷 | Turkish | tur | – | ✓ | – |
| 🇵🇱 | Polish | pol | – | ✓ | – |
| 🇻🇳 | Vietnamese | vie | – | ✓ | – |
| 🇹🇭 | Thai | tha | – | ✓ | – |
| 🇵🇭 | Filipino | fil | – | ✓ | – |
| 🇺🇦 | Ukrainian | ukr | – | ✓ | – |
| 🇨🇿 | Czech | ces | – | ✓ | – |
| 🇸🇪 | Swedish | swe | – | ✓ | – |
| 🇷🇴 | Romanian | ron | – | ✓ | – |
| 🇬🇷 | Greek | ell | – | ✓ | – |
| 🇭🇺 | Hungarian | hun | – | ✓ | – |
| 🇮🇱 | Hebrew | heb | – | ✓ | – |
| 🇮🇷 | Persian | fas | – | ✓ | – |
| 🇧🇩 | Bengali | ben | – | ✓ | – |
| 🇱🇰 | Tamil | tam | – | ✓ | – |
| 🇩🇰 | Danish | dan | – | ✓ | – |
Language codes
Neolli uses ISO 639-3 (3-letter) language codes internally. These codes appear in API responses and export filenames.Language presets
When adding languages for translation, you can use presets to quickly select popular languages:- Top 3 — English, Spanish, Portuguese (covers ~60% of global YouTube viewers)
- Top 5 — Adds French and German
- Top 10 — Adds Italian, Russian, Japanese, Korean, and Chinese (~85% coverage)