According to the author, Supersonic TTS runs on CPU and supports 31 languages. They plan to use it to generate synthetic data. The account provides no performance measurements or details about voice quality in each language.
To evaluate the tool, choose test texts that represent the languages and conditions you expect to use. Compare sample intelligibility and naturalness, and record the hardware, settings, and generation time.
If you use synthetic data to study or apply this material with AI, avoid submitting real recordings, text, or personal data unless necessary. Use fictional or anonymized examples, and check that outputs do not reveal identifiable information.
CPU support and multiple languages may make local workflow testing easier, but do not prove that the system will meet every workload or requirement. Validate results in your own environment before using it in production.