There is no one-size-fits-all answer to this question as the best website for free and accurate academic transcription services will depend on your specific needs and preferences. However, some of the options that have been highly rated by various sources include Otter, Rev, Happy Scribe, Scribie, Temi, and Sonix. These websites offer both automatic and human-generated transcriptions, as well as a range of additional services such as captioning, subtitling, and translation. It is recommended to try out a few different options and compare their accuracy, speed, and price to find the one that works best for you.