OpenAI Operator and the shift to AI-first interfaces.Made with MidjourneyHow do we create user-centered experiences when our users arenthuman?Watching OpenAIs Operator navigate the web, I cant help but think about the early days of my career in the user testing lab at AmericanExpress.As a design engineer, I sat quietly watching customers use our mobile banking prototypes. Each interaction told a story: the smile of delight when something worked intuitively, the furrowed brow of confusion when it didnt, the forced politeness of someone clearly just telling us what they thought we wanted to hear. It was fascinatingand crucialto see our work through humaneyes.That kind of scene has defined software development for decades. But with AI agents like Operator, this human-centric approach to design is starting to feel almost quaint. Were entering an era where much of the software we create wont be used by humans at all, but by AI. This shift fundamentally changes how we think about interfaces and challenges our core assumptions about human-computer interaction.Source: OpenAIDemoAI is changing from copilot todriverAt first glance, Operators interface appears simple: a chat UI with an embedded browser. But this simplicity hides a seismic shift in software interaction.The core tension lies in the interface itself: humans need a visual interface to take action and monitor the AI, but the agent would be perfectly content with just some plain text or an API. As agents take the lead in software interaction, what becomes of our carefully crafted visual interfaces? How do we balance agent-first interaction while allowing humans to effectively takecommand?This evolution mirrors what weve seen with autonomous vehicles, where Tesla and Waymo have maintained controls like steering wheels and pedals while gradually increasing vehicles autonomy. But while physical vehicles face real-world complexity that slows their transition to full self-driving, software agents operate in more controlled digital environments. Here, the transition from providing assistance to taking the lead could happen far morerapidly.Building trust through collaboration and visualfeedbackEven if these agents were ready for full autonomy today (which they arent), users arent ready to grant it. While theres excitement about Operators potential, it will take time for people to adjust. Theres no foundation of understanding andtrust.This need for trust-building is evident in the interface design, which prioritizes visibility into the agents actions. This visual feedback loop is crucial for building user confidence, especially compared to prior voice-only interfaces like the Rabbit R1, where course-correcting an agents actions proved much more challenging.The user can take control from the agent. Source: OpenAIDemoCreating a sandbox for agents to play andlearnThe technical decisions behind Operators release reflect an emphasis on safety with careful consideration of capability andcontrol.OpenAI opted for a remote browsing approach instead of enabling computer use directly on users local machines. While this rules out some capabilities, it creates a sandboxed environment where the agent can operate while maintaining security. It also enables the benefit of running many workflows in parallel by distributing tasks across browsers in thecloud.This is how a new workforce emergesAs renowned AI researcher Andrej Karpathy noted on Operators launch day: I think 20252035 is the decade of agents youll spin up organizations of Operators for long-running tasks of your choice (eg running a whole company).Despite the initial demo, Operator is not a basic tool for ordering groceriesits the prototype of a tool capable of running entire businesses.Even in its limited release, Operator represents a key milestone in OpenAIs quest to unlock AI as an active participant in the digital ecosystem. By launching within the $200/month Pro tier, the company can gather valuable training data from power users while limiting initial exposure, then gradually expand the tools footprint as it improves.The strategy is clear: start small, gather data, improve capabilities, expand access, and apply to as many workflows as possible.Rethinking what the futureholdsFor those of us whove spent our careers laser-focused on human users, its time to expand our thinking. Just as I once sat watching humans navigate banking software, I now find myself studying AI agents navigating the web. The fundamental questions remain similar: How do we ensure reliable, efficient interaction? How do we enable appropriate control? How do we buildtrust?The next generation of software will need to serve both human and AI users, often simultaneously. Success wont just be about technical capabilityit will be about finding the right balance between automation and oversight, between AI capability and human control. And perhaps most crucially, it will be about designing experiences that make this collaboration feel even better than prior software interfaces weve come to know andlove.If you enjoyed this post, subscribe to my newsletter or follow me on social media: X, LinkedIn, Bluesky.When AI takes the drivers seat was originally published in UX Collective on Medium, where people are continuing the conversation by highlighting and responding to this story.