Hark Launches Handoff Browser Agent to Automate Web Tasks

AI startup Hark has officially launched Hark Handoff, a browser-based autonomous agent designed to navigate and execute complex digital tasks without relying on official application programming interfaces. The release follows the company’s landmark seven hundred million dollar Series A funding round completed in May. By analyzing website architecture and visual interfaces, the agent autonomously determines when to click buttons, type inputs, or scroll, enabling it to operate across platforms such as Target, Walmart, OpenTable, and LinkedIn. The platform is engineered to handle a wide spectrum of consumer and professional workflows, including food ordering, travel booking, tax filing, grocery shopping, dining reservations, and multi-source research. During a product demonstration, chief executive Brett Adcock illustrated the system executing a flower arrangement command, successfully interpreting ambiguous requests like florist discretion while adapting to site-specific layouts. While the demonstration provided a streamlined overview, the underlying system is built to process dynamic web environments that traditionally require human interaction. From an architectural standpoint, Hark Handoff currently operates on a post-trained model architecture, with plans to transition to pre-training later this year. This phased approach allows the engineering team to rapidly iterate on data pipelines and computational infrastructure. The company emphasizes that its foundation model diverges from conventional large language models by forecasting the next discrete action, such as a mouse click or keystroke, rather than predicting sequential text tokens. This action-oriented design is intended to improve execution accuracy and reduce latency across automated browsing sessions. Hark enters a rapidly maturing sector where major technology firms including Google, OpenAI, and Anthropic are developing computer-use agents, alongside venture-backed specialists like Browser Use, Polar, Strawberry, and Aside. The startup asserts that Handoff delivers superior processing speed and significantly lower operational costs compared to competing models such as GPT 5.5 and Opus 4.8. The company is now accepting applications through its waitlist and has scheduled the general public release for the end of the summer. As browser automation tools continue to integrate into mainstream digital workflows, Hark’s action-focused architecture aims to establish a standardized framework for reliable, API-independent task execution.