What the evidence decides
Portability and display
Tie on battery, video streaming
Both sides document the same value.
Performance
Tie on memory (base)
Both sides document the same value.
Portability and display
MacBook Air 13-inch on weight
Both sides are documented, so this one can be decided.
Attribute by attribute
Performance
Processor
M5 chip
MacBook Air 13-inch
Verified90
M5 chip
MacBook Air 15-inch
Verified90
no directional preference
Sources for this row
MacBook Air 13-inch:
MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01
MacBook Air 15-inch:
MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01
Memory (base) (GB)
16 GB
MacBook Air 13-inch
Verified90
16 GB
MacBook Air 15-inch
Verified90
Tie
Sources for this row
MacBook Air 13-inch:
MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01 · www.apple.com (tier 1), retrieved 2026-09-02
MacBook Air 15-inch:
MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01 · www.apple.com (tier 1), retrieved 2026-09-02
Portability and display
Battery, video streaming (h)
18 h
MacBook Air 13-inch
Verified90
18 h
MacBook Air 15-inch
Verified90
Tie
Sources for this row
MacBook Air 13-inch:
www.apple.com (tier 1), retrieved 2026-09-02 · MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01
MacBook Air 15-inch:
www.apple.com (tier 1), retrieved 2026-09-02 · MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01
Display size (in)
13.6 in
MacBook Air 13-inch
Verified90
15.3 in
MacBook Air 15-inch
Verified90
no directional preference
Sources for this row
MacBook Air 13-inch:
MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01 · www.apple.com (tier 1), retrieved 2026-09-02
MacBook Air 15-inch:
MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01 · www.apple.com (tier 1), retrieved 2026-09-02
Weight (lb)
2.7 lb
MacBook Air 13-inch
Verified90
3.3 lb
MacBook Air 15-inch
Verified90
Decided
Sources for this row
MacBook Air 13-inch:
www.apple.com (tier 1), retrieved 2026-09-02 · MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01
MacBook Air 15-inch:
www.apple.com (tier 1), retrieved 2026-09-02 · MacBook Air Technical Specifications (tier 1), retrieved 2026-09-01
A missing measurement never counts
against a product. If we could not reach a document, that is a fact
about our research and not about the vendor. Open a row to see the
source, its tier and the day we read it.