T.I. is a free man ... the rapper made a quiet exit from an Atlanta halfway house just after midnight this morning .. TMZ has learned.
T.I. -- real name Clifford Harris -- spent 10 months in federal prison for a probation violation after he was arrested in L.A. last year for drug charges. He was on probation for firearms charges.
Unlike his Aug. 31 release from federal prison, T.I. left the halfway house with no fanfare -- no tour bus, no documentary producers -- simply getting into a chauffeur-driven SUV and leaving.