ElevenLabs
The quality benchmark and the best free audition, but nothing you generate before you subscribe can ever be used commercially.
Voice generation stopped being the hard part a while ago: all five of these produce audio most listeners will not question. The licence is the hard part, because not one of their free tiers lets you use the audio commercially, and on ElevenLabs that restriction sticks to the file forever, even after you start paying. Pick on rights and on allowance, not on a demo reel.
The quality benchmark and the best free audition, but nothing you generate before you subscribe can ever be used commercially.
The pragmatic business choice: a commercial licence from about $19 a month annually, though its free tier will not let you download anything at all.
The one to pick when the voice should be yours: it edits a real recording as if it were a document, rather than generating a stranger.
A presenter on screen rather than a voiceover track, which is what corporate training and explainer video usually actually need.
The same avatar idea aimed at marketing, with translation that keeps the speaker looking like themselves.
ElevenLabs for raw quality and language coverage, Murf when you need a straightforward commercial licence and predictable hours, and Descript when the voice should be your own. Synthesia and HeyGen are a different product: they put a presenter on screen, so choose them only if you want a face as well as a voice. If you are narrating anything you will sell, start on a paid tier rather than auditioning on free.
ElevenLabs, with a caveat that matters more than the ranking. Its free tier gives 10,000 credits a month, roughly ten minutes of speech, on the real models with genuine MP3 and WAV downloads and no audible watermark on speech. Murf free is more restrictive: about ten minutes and no downloads at all. But no major free tier grants commercial rights, so treat free as an audition to pick a voice, not as production capacity.
Only on a paid plan, and only for audio generated while you were paying. ElevenLabs states that its free plan "does not include a commercial license and cannot be used for any commercial purpose", and that content created outside a paid subscription, "before or after", stays non-commercial. So upgrading does not relicense the files you already made: you have to generate them again, which spends the allowance twice. Murf free carries no commercial rights either, and its Creator plan adds them.
Not on ElevenLabs, and this surprises almost everyone. Its own documentation is explicit: "You can only create a Professional Voice Clone of your own voice. Even with their consent, you cannot clone someone else’s voice," and every professional clone goes through verification. The supported route is that the voice owner creates and verifies the clone on their own account and shares it with you by link. Voices of prominent public figures are blocked outright under a no-go voices policy.
Assume yes, and assume it is detectable either way. ElevenLabs embeds an inaudible watermark in audio on every plan, free and paid, and says all generated audio can be traced back to the account that made it. Free-tier audio additionally has to credit "elevenlabs.io" or "11.ai" in the title of whatever you publish. Beyond vendor terms, disclosure rules for advertising and political content differ by country and are tightening, so check the rules where your audience is rather than where you are.