Best Voice Cloning APIs in 2026: Speaker Similarity, Consent Checks, and Price per 1M Characters

Seven voice cloning API providers were tested using a 10-second audio sample to evaluate speaker similarity, consent verification, commercial licensing, supported languages, and pricing per million characters. The comparison highlights differences in reference audio requirements, consent checks, and costs across platforms like ElevenLabs, Cartesia, Inworld, Gradium, Fish Audio, Resemble AI, and Hume.