MakeAudio

MakeAudio splits its product into two halves. The first is a text-to-speech engine: you paste or upload text, choose one of 14 supported languages and one of nine voices, then download the rendered audio in MP3, WAV, AAC, Opus, FLAC or PCM. Each conversion accepts up to 200,000 characters, and billing is consumption-based rather than a subscription — you buy credits, and one credit covers one character of speech. The second half is a broad set of self-serve utilities for audio, video, music and sound testing.

The utility tools work directly in the browser, which is why the site advertises no file-size limit: your own device does the processing, and the only ceiling is available memory. Free visitors get two uses per day of the utility tools with no upload-size cap; a paid plan removes both the daily limit and the ads, at $15 for one month or $30 for three months. Audio transcription is metered separately, at one credit per second of audio, so an hour of recording works out to roughly $1 in credits.

Because text-to-speech is charged per character rather than per seat, MakeAudio suits creators and teams with irregular volumes better than a flat monthly voice subscription. Practical things to keep in mind: credits are purchased in a $5 minimum block, expire one year after purchase, and speech limits of 200,000 characters per job mean very long manuscripts need to be split. Check the current pricing page before budgeting, since rates can change.