A SpeechGen alternative without character credits
SpeechGen is an online voice generator with, by its own count, more than 5,000 voices in about 150 languages. It works on pay-as-you-go credits starting at $4.99 that expire a year after purchase, with a small free allowance, many download formats, a commercial license on every plan and an API.
When you voice a lot of text, per-character credits add up. SuperClonica offers a free offline engine without any limit and an API billed by time. This guide compares the two honestly.
Where SuperClonica is different
The free SuperClonica engine runs on your own computer, offline and with no character limit, so a long audiobook costs nothing but the electricity. The catalog has character, narrator, announcer and game voices made by authors, each with a free test on its page, and in the studio you can train a voice from your own recording. For apps, the speech API bills by time, not characters: a free key with a minute a day, and Starter at $5 a month for up to 3 minutes of speech in every 10-minute window, about 216 hours a month if used to the limit.
Where SpeechGen is the better fit
SpeechGen has far more voices and languages: about 150 against the 31 of Supertonic 3, which powers SuperClonica and does not speak Chinese yet. It also exports to many formats and bitrates in the browser with no installation. For an occasional short voice-over in a language SuperClonica lacks, it is the simpler choice.
Try SuperClonica on your own text
Open a few voices in the catalog and voice the same sentence of your script with each. For whole texts, install the engine with python -m pip install superclonica-cpu and voice a .txt file straight to MP3 or WAV; the guide to text to MP3 shows the command. Compare the result with what you pay per character today.