The purple-bibbed whitetip (Urosticte benjamini) is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae.

[7] The purple-bibbed whitetip is found on the Pacific slope of the Andes from Colombia's Chocó Department south into Ecuador as far as Pichincha Province.

It collects nectar from a variety of flowering plants including bromeliads and members of families Ericaceae, Fabaceae, and Rubiaceae.

[7] The purple-bibbed whitetip's breeding season in Ecuador spans from January to April; it has not been defined in Colombia.

It builds a cup nest from moss and ferns, and typically places it in a shrub or vines in a steep ravine about 2 to 4 m (7 to 10 ft) above the ground.

The purple-bibbed whitetip makes a "mellow, nasal-sounding fast twittering 'tweetweetweetwee...'" that can sound like "a laughing chatter".