The verdict: On longevity they're evenly matched (long (8-10h) vs long (8-10h)) — skin chemistry will decide. They live in the same scent territory — coffee and sweet against lavender and floral — which is exactly why people cross-shop them. Yves Saint Laurent Libre stretches into spring, which Yves Saint Laurent Black Opium can't cover as well.
Yves Saint Laurent Black Opium (EDP, 2014) against Yves Saint Laurent Libre (Eau de Parfum, 2019): Both come from Yves Saint Laurent, which makes this the classic same-house dilemma. Here's the honest, note-by-note breakdown — longevity, sillage, seasons, and who each one is actually for.
Yves Saint Laurent · EDP · 2014 · Women's
Accords: coffee · sweet · vanilla · floral · woody · warm spicy
Top: Pink Pepper, Pear, Orange Blossom · Heart: Coffee, Jasmine, Bitter Almond, Licorice · Base: Vanilla, Patchouli, Cashmere Wood, Cedar
Longevity: long (8-10h) · Sillage: strong
Seasons: fall, winter · Best for: night out, date night, special occasion
Full Yves Saint Laurent Black Opium breakdown · Check price on Amazon
Yves Saint Laurent · Eau de Parfum · 2019 · Women's
Accords: lavender · floral · warm spicy · sweet · musky · vanilla
Top: Lavender, Mandarin Orange, Black Currant, Petitgrain · Heart: Lavender, Orange Blossom, Jasmine · Base: Madagascar Vanilla, Musk, Cedar, Ambergris
Longevity: long (8-10h) · Sillage: strong
Seasons: fall, winter, spring · Best for: date night, night out, everyday, special occasion
Full Yves Saint Laurent Libre breakdown · Check price on Amazon