Perplexity Comet's marketing headline "Browse at the speed of thought" works well for these reasons:

• Implies current browsing experiences are frustratingly slow compared to mental processing

• "Speed of thought" creates a compelling metaphor for instantaneous browsing

• Appeals to users who feel constrained by typical browser loading times and friction

• The phrase suggests seamless, frictionless interaction between mind and web

• Creates aspiration for browsing that feels as natural as thinking

• Simple language delivers a profound promise about user experience transformation

• Avoids technical specifications while clearly communicating the core benefit

• Appeals to power users who value efficiency and speed in their workflows

• Suggests that Perplexity's Comet eliminates the gap between intention and action in web browsing