Hormones occur inside organisms as signaling factors, and arise from biological activities, the development or homeostasis of the organism.
Thus, **they are considered neither biotic nor abiotic factors in ecology.**
(Terrible analogy warning!) It's a bit like asking whether the wheel of a car is petrol- or diesel-based. It makes no sense!
Here's a helpful, comprehensive website.
Biotic ( _living_ ) factors are living organisms in an ecosystem, that must share common resources or compete in a habitat one way or another. Abiotic ( _non-living_ ) factors are things like temperature, wind, salinity, etc. that affect individuals or the community of an ecosystem.
As you can see, hormones are just one of many components of a living organism. They aren't living themselves. It's a silly question to ask, as I hope you can see now.