For high-quality AI voices, Acoust is a standout with more than 200 voices in 30+ languages. It also offers customizable AI voice cloning, speech-to-text transcription and background music. The service is good for social content, training, e-learning and other uses, and a free plan is available.
Another strong option is VEED, a browser-based AI video editor with a large royalty-free stock library and support for multiple formats and aspect ratios. VEED has advanced features like text-to-video, AI-generated avatars and auto-subtitles that make it good for marketers, teachers and content creators. It also offers free use with no credit card required.