Sierra's CEO Predicts End of Traditional Software Interfaces

Bret Taylor says AI agents will replace click-based web apps with natural language prompts.

Apr. 9, 2026 at 5:20pm by Ben Kaplan

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A highly detailed, glowing 3D illustration of a futuristic AI agent interface, with neon cyan and magenta lights illuminating the various hardware components and digital elements. The image conveys a sense of advanced, intelligent technology that is seamlessly integrated into the physical world.As AI agents become more sophisticated, they may soon replace traditional software interfaces and allow users to interact with technology through natural language prompts.San Francisco Today

Bret Taylor, co-founder and CEO of AI startup Sierra, believes the way humans interact with software will fundamentally change in the near future. Taylor predicts that AI agents will replace traditional click-based web applications, allowing users to simply describe what they need in natural language rather than navigating complex software interfaces.

Why it matters

This shift could have major implications for how enterprises and consumers use technology, potentially making software more accessible and user-friendly. However, some experts caution that the implementation of AI agents is still far from autonomous, requiring constant updates and fine-tuning by engineers.

The details

Sierra recently launched Ghostwriter, an 'agent as a service' tool that allows users to create specialized AI agents to execute tasks without interacting with a software interface. Taylor argues that many enterprise tools are not used regularly, and that natural language prompts will soon replace the need to learn complex software systems. Sierra has already deployed an agent for Nordstrom in just four weeks using Ghostwriter.

  • Sierra reached $100 million in annual revenue run rate less than 21 months after its founding.
  • Sierra raised a $350 million funding round led by Greenoaks Capital in September.

The players

Bret Taylor

Co-founder and CEO of Sierra, a startup that builds customer service AI agents for enterprises. He was formerly co-CEO of Salesforce.

Sierra

A startup that builds customer service AI agents for enterprises, including the 'agent as a service' tool Ghostwriter.

Nordstrom

A retailer that Sierra implemented an AI agent for in just four weeks using Ghostwriter.

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What they’re saying

“'I truly think that's where the world is going.'”

— Bret Taylor, Co-founder and CEO, Sierra

“'Most companies don't want to make software, they want solutions to their problems.'”

— Bret Taylor, Co-founder and CEO, Sierra

What’s next

Sierra plans to continue leveraging its Ghostwriter tool to deploy AI agents for enterprises at 'unparalleled speeds'.

The takeaway

While Bret Taylor's vision of AI agents replacing traditional software interfaces is intriguing, experts caution that the current implementation of such technology still requires significant human oversight and intervention. The shift towards more natural language-driven interactions with technology, however, could make enterprise tools and consumer apps more accessible and user-friendly in the long run.