Looking on the internet deeply has found these results:

I'm good is the most popular phrase on the web.

I'm well 1308,000 results on the web	I'm good 114,700,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Mar 21, 2013 ... So even though the answer "I'm good" is accepted, I tend to see more accurate the answer "I'm well". Because right now Aug 13, 2010 ... For “I'm well”, there is well (adjective) 1b: being in satisfactory ... means "how are things going in general" and the response "I'm well" brings the ... as you are ... Feb 19, 2014 ... The myth — that you should really say "I'm well" — relies on the idea that ... "I'm well" is also allowed but not for the reasons many think. However, “I'm good” is as grammatically correct as responding “I'm well.” The reason is found by examining the verb in the statement and the meaning of both ...	No, I'm good actually. All I'm good for is shooting things down. And also I'm good by myself. No, I'm good with my sponge. I'm good at this, randy. No, I'm good with my clog. I'm good at pretend games. I'm good at finding things.

I'm well

1308,000 results on the web

I'm good

114,700,000 results on the web

More popular!

Mar 21, 2013 ... So even though the answer "I'm good" is accepted, I tend to see more accurate the answer "I'm well". Because right now
Aug 13, 2010 ... For “I'm well”, there is well (adjective) 1b: being in satisfactory ... means "how are things going in general" and the response "I'm well" brings the ...
as you are ...
Feb 19, 2014 ... The myth — that you should really say "I'm well" — relies on the idea that ... "I'm well" is also allowed but not for the reasons many think.
However, “I'm good” is as grammatically correct as responding “I'm well.” The reason is found by examining the verb in the statement and the meaning of both ...