The feature can be turned on with a toggle switch in the model selector menu. You can watch the video below for reference:

Claude Opus 4.8 is now available in Fast mode in Perplexity Computer, giving you faster responses at the same quality.

Turn it on with the Fast toggle under Claude Opus 4.8 in the model picker.

Live now on the web for all Computer users. pic.twitter.com/oeUtyO51MM

— Computer (@AskPerplexity) July 10, 2026