Most big voice services let you try their stock voices for free, then charge for making a voice that sounds like you. ElevenLabs, the best known, starts voice cloning on its Starter plan, about $6 a month; its free plan has no cloning and no commercial use.
Some smaller sites advertise free cloning. Before you upload anything, check four things: how much audio you can actually make, whether you can download it, whether you can use it commercially, and what they do with your recording.
Remember that your voice is personal data. Once it's uploaded, it sits on someone else's servers under their terms, and a service can change or close. When PlayHT shut down at the end of 2025, its users reportedly lost their saved audio and their cloned voices.