Norwegian has two branches - Nynorsk and Bokmal, second is "book language" more official. Their relation for ASR/TTS is not yet known for us. Not even sure if they are phonetically different.
Some work on Norwegian happens at NBAILAb
https://huggingface.co/NbAiLab
Not much model published already but there is finetuned whisper.
Parakeet v3 does not support Norwegian.
NST dataset for Norwegian is a good start but resources are limited. Some parlamentary speech and not much youtube.
WER results
| Podcasts | Fleurs | NST Test | |
|---|---|---|---|
| Whisper V3 Large | 16.3 | 8.0 | 12.5 |
| Whisper V3 Turbo | 15.8 | 8.8 | 13.4 |
| Vosk Large | 17.2 | 12.3 | 4.3 |
| NBAILab Whisper Turbo | 24.0 | 8.3 | 13.8 |
| Vosk Small | 28.6 | 18.0 | 9.5 |