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It's good but not the best free model. I find Chatterbox to be more realistic with no robot-sounding and better (though not perfect) intonation.

Chatterbox sounds great, their demo page is a good introduction: https://resemble-ai.github.io/chatterbox_demopage/

I agree. We switched from elevenlabs to chatterbox (hosted on Resemble.ai) and it is much much cheaper and better.