It depends on your starting input. Solmi is the strongest if you already have a song, because it accepts MP3 uploads (including songs downloaded from Suno), trims to the hook on a waveform, and burns timed lyric captions. Kling AI is the cheapest route to 1080p. HeyGen is the best spoken-avatar platform but is tuned for speech rather than singing. Vozo is best for dubbing and full-body talking photos.
Yes, with limits. On Solmi, a new account on the web gets 100 one-time music-video credits with no card required, about 25 seconds of 480p singing video at 4 credits per second; after that, a free account's credits refill to 10 a day. Kling AI's free tier typically caps generations at 5 to 10 seconds.
Solmi, Kling AI, HeyGen, and Vozo all work from the MP3 you download from Suno and upload. In Solmi you can also try pasting the Suno share link, which works only when Suno serves a public file for the song; if it fails, upload the file.
Most tools cap a single generation between 10 and 60 seconds. Solmi allows up to 60 seconds per clip. For a full song, render each section separately and stitch the clips together, or use a dedicated music video generator that handles full-length tracks.
Sung vowels are held far longer than spoken ones, pitch swings wider, and the jaw opens further, so a model tuned on speech tends to mumble through a chorus. Tools built around speech, such as HeyGen, show this most clearly on held notes.
On paid plans, generally yes, but the licence covers the generated visuals rather than your audio. You still need the rights to the song, and using a real person's face requires their permission regardless of the tool's terms.