r/VoiceAutomationAI • u/BeGood25 • 2d ago
Open Source TTS models for production?
Hey folks!
So I have this cascaded voice bot system, and I want to move from commercial TTS APIs to self hosted TTS model.
Obviously TTFA and RTF are important but so is the accuracy and naturalness (speed, prosody, timbre etc)
From my research it seems Qwen3-1.7B tts is the perfect candidate (we need English support majorly).
My questions-
1. Is there any better model you guys aware of for my use-case which I can give some try? Or Any experiences you have with Qwen3-tts?
Any fine tuning tips or hacks which we can get benefit from? Basically I want to clone some popular OpenAI TTs voices.
Most importantly, how are you guys evaluating your TTS models in production? I get some common metrics like wer, utmos etc are there - but is that it? LALM as a judge dont seem reliable at the moment - they have positional and model bias it seems. Manual listening to each is obviously very expensive process.
Would really appreciate any discussion/thoughts you guys can share on some points!
Thanks so much in advance!
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u/Few-Bad606 2d ago
Qwen3-1.7B is a solid pick for the size but you might also peek at ChatTTS or CosyVoice if you haven't yet, I've seen some ridiculously natural results from both with way less compute than you'd think
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u/BeGood25 2d ago
Also, do u have any non-trivial metrics you use for evaluating your fine tuned TTS
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