Curable resin, curable resin composition, and cured article

A curable resin composition comprising:

• a curable resin (A) that has a repeating unit represented by General Formula (1) and contains one or more reactive groups selected from the group consisting of a (meth)acryloyloxy group, a vinylbenzyl ether group, and an allyl ether group as a terminal structure;
• and
• a curable compound (B) represented by General Formula (2),
• in the formula, Ra1 and Rb1 each independently represent an alkyl group having 1 to 12 carbon atoms, an aryl group, an aralkyl group, or a cycloalkyl group, k1 represents an integer of 0 to 3, X represents a single bond or a hydrocarbon group, and Y is represented by any of General Formulae (3) to (5),
• in the formulae, Z represents a hydrocarbon group,
• in the formula, Ra2 and Rb2 each independently represent an alkyl group having 1 to 12 carbon atoms, an aryl group, an aralkyl group, or a cycloalkyl group, k2 represents an integer of 0 to 3, X represents a single bond or a hydrocarbon group, and V represents a (meth)acryloyloxy group, a vinylbenzyl ether group, or an allyl ether group,
• wherein when a total area % of the curable resin (A) and the curable compound (B) as measured by gel permeation chromatography (GPC) is set to 100, an area % of the curable compound (B) is in a range of 0.5% by area to 30.0% by area.