Have you read
Ancillary Justice? It's about a ship's AI that has been "murdered." All that remains of it is tucked into a single remaining clone body that was a soldier-drone, and it's sort of investigating its own murder while... coping with suddenly being small and human and no longer a "Ship." The book follows two time frames, it's interesting and won the Hugo in 2014. The sequels are also good and worth reading (as are some of the other books within the world built by Ann Leckie). No spoilers- this is all from the back of the book!
How about
All Systems Red? (The Murderbot diaries, Martha Wells) Hugo Winner, 2018. About 170 pages- it follows SecUnit, a heavily armed security cyborg that has hacked its own governor module and wants to be left alone to watch its favorite serial show (The Rise and Fall of Sanctuary Moon) but must pretend to still follow orders so the governor module hack isn't discovered. Of course, everything on the mission goes wrong, and SecUnit is forced to "disobey" what should be its programming to save the crew it is with. Fast-paced, a blast, the first four books in the series were all nominated for Hugos but Wells turned them down after the first one.
What I really like about Murderbot is the pacing- it's fast, snappy, and short. lots of witty internal dialogue, it's not 1940s/1950s Heinlein but in terms of pacing and dialogue I can't help but be reminded of the shorter page turners from that era. I just read another book in the series last night and couldn't put it down, they've made it into my all-time favorites list.
I've got some other recommendations I could make, but these two are good recent favorites of mine!