If you're looking for a Respeecher alternative, PlayHT is worth a look. It has a library of over 600 ultra-realistic AI voices across many languages and accents. Features include real-time voice cloning, custom pronunciation and voice inflection. PlayHT is a flexible tool that can be used for video voiceovers, conversational AI, games and other applications.
Another good alternative is Resemble. It's also good for voice cloning, with features like deepfake audio detection and watermarked audio to try to prevent misuse. It can generate voices in multiple languages and can be integrated with software using Python, NodeJS, Unity and REST API. Resemble is good for customer service, games and entertainment.
ElevenLabs has high-quality voices in 29 languages and more than 120 voices. It offers natural text-to-speech, voice cloning and fine-tuning. It's good for content creation, games and audiobooks, and has flexible pricing options including a free tier and enterprise plans.
If you want a more complete solution, check out Acoust. It has more than 200 voices in 30+ languages, and you can control the emotion and other aspects of the voice. Acoust can clone voices and translate with AI, so it's good for social content, training and explainer videos. It has flexible pricing options and a big focus on security and user privacy.