Benchmarking Large Language Models for Grapheme-to-Phoneme Conversion: A Japanese Case Study
arXiv:2606.22009v1 Announce Type: new Abstract: Grapheme-to-phoneme (G2P) conversion is essential for controllable and robust text-to-speech, and large language models (LLMs), with broad linguistic knowledge, offer a promising approach. We benchmarked over 30 LLMs on Japanese G2P, comparing them with conventional morphological analyzers on 3000 manually annotated sentences. We evaluated two prompting strategies: a parse mode, where the LLM performs morphological analysis followed by rule-based k