Microsoft MAI-Transcribe-1.5 edges out Notion AI by 0.9 points (7.9 vs 7.0) -- a B-tier vs B-tier split that's narrow but real. Not a blowout; both belong on a shortlist. The score gap shows up most clearly in the categories that matter for Microsoft MAI-Transcribe-1.5's strengths, so if those categories are your priority, the lead translates.
On pricing, Microsoft MAI-Transcribe-1.5 starts free while Notion AI requires a paid plan from day one ($10+). If you're testing the waters or running an occasional workload, that gap matters more than the score differential. Microsoft MAI-Transcribe-1.5 starts at $0.54; Notion AI starts at $10. Compare what each entry tier actually unlocks before you compare list prices -- the limits matter more than the headline number.
By use case: pick Microsoft MAI-Transcribe-1.5 when developers and enterprises who need best-in-class multilingual speech-to-text for high-volume use cases (meeting recording pipelines, call-center transcription, accessibility captioning at scale, multilingual audio indexing). Pick Notion AI when teams already deep in notion who want ai assistance without adding another tool to the stack. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in Microsoft MAI-Transcribe-1.5's lane, the tier-list ranking and the use-case fit point the same direction; if you're in Notion AI's lane, the score gap matters less than the fit.
Bottom line: Microsoft MAI-Transcribe-1.5 is the safer default for most readers, but Notion AI is competitive enough that the tie-breaker is your specific workload, not the spec sheet.