Doctors believe the cancer has "all been got", but Mr Fry says they can't be sure until his PSA levels are checked again - but for the moment he says he is "fit and well and happy".
He said he is "fortunate" to have caught the disease, and added: "Here's hoping I can get another few years left on this planet because I enjoy life at the moment and that is a marvellous thing to be able to say, and I would rather it didn't go away".
Stephen Fry has been diagnosed with prostate cancer. "And they were scored nine and considering 10 is the maximum, this was clearly an aggressive little bugger". They took the prostate out.
You can have a PSA test at your local GP surgery where a doctor or practice nurse will take a sample of your blood and your GP may also do a digital rectal examination (DRE), where the doctor will use a gloved hand into your rectum to examine the prostate gland.
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He also said that India is now more investment-friendly as the government keeps its promises, which attracts investors. The Trump Organization charges a licensing fee to its Indian partners who build the properties under the Trump name.
Fry thanked his husband and friends for supporting him in a trial that he always thought "happens to other people".
The former QI presenter - who stepped down from his BAFTA hosting role last month - said his health was the reason he had retreated from the public eye in recent months.
Obviously, fans rushed to send their well-wishes to the presenter, as one wrote: "I wish you well. a courageous decision and a very worthwhile message".
The 60-year-old added: "I've been keeping my head down as much as possible".
He also urged others to get checked. Good heavens, Stephen, you're not the sort of person who gets cancer'.
Prostate cancer is the most common cancer in men in the United Kingdom, with over 40,000 new cases diagnosed every year, according to the NHS.