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Model sizes. Kokoro about 331 MB, Chatterbox Turbo about 3 GB, full Chatterbox about 3.2 GB. Each downloads after you confirm, under its own license.
CPU mode. Every vRamble feature works; narration is slower. vRamble Studio needs an NVIDIA card. Choose CPU mode when the installer does not find one.
Questions
What does it cost?
vRamble is free, and there is no subscription. vRamble Studio, which adds the comic-shorts workspace, is the only paid product.
Does it upload my books?
No. Your books, voices and recordings are processed on your PC and stay there. It goes online only when you ask it to: to download a model, import a link, or send a script to Claude if you choose that option.
Can I use my own voice?
Yes. A clean ten-second recording is enough for the sample-based voices.
What about Audible?
Check each store's rules on AI narration before you publish. vRamble makes the file; where you publish it is your call.
Which graphics cards work?
Any recent NVIDIA card with the CUDA build. RTX 50-series cards use the CPU build for now. AMD and Apple are not supported yet.