The Daleks are well established as natural, non-human, sentient biological organisms inside armor. Details have varied over the years, but I don't think they've ever qualified as AIs.

They have always been biological but they are also typically genetically engineered at a rather fundamental level to produce desired psychological traits. While I would not use "AIs" myself in such circumstances I see some merit in differentiating between the bioloical vs electronic distinction and the natural vs artificial intelligence distinction.