Do you consider Bahà'ism an Abrahamic religion?

I think it would be categorised as such. The Baha’i faith, like the traditional Abrahamic religions, does consider Abraham to be of spiritual significance. Jews, Christians, and Muslims differ on how exactly they regard Abraham, but that figure definitely holds a special place in all three faiths, as he does in the Baha’i faith.

The Baha’i is also a monotheistic religion, another similarity to Judaism, Christianity, and Islam. Christians consider the words of Jesus to be the final revelation of God’s will to humanity; Muslims consider Muhammad in a similar way. The Baha’i faith simply sees itself as the most recent manifestation of God’s will. Like Christians and Muslims, the Baha’i value the beliefs and prophets of the religions which came before them.

Over time, the Baha’i faith probably will come to be seen as a traditional Abrahamic religion. One very notable difference, however, is that the histories of Judaism, Christianity, and Islam all involve spreading through conquest. The Baha’i, so far, have no such history.

Philosophy and religion are 2 different things. Similar, but very much different.

Philosophy: questions that can not be answered.

Religion: answers that can not be questioned.