The round was led by Pat Grady of Sequoia. Other investors include San Francisco-based early-stage venture fund Haystack; Adjacent, which focuses on next-generation technology startups; and Original, an investment firm supporting early- and growth-stage companies. Jeff Weiner, former CEO of LinkedIn, also participated in the round.
Blockit AI is an artificial intelligence (AI)-powered scheduling agent. In a LinkedIn post, Khimji said the idea for the product had been on his mind for nearly a decade. He joined Sequoia in 2019 and stepped back from the firm in 2024 to build his own startup.
The startup is co-founded by John Han, who has previously worked with companies including Google, Clockwise, and Retool. Han brings more than a decade of experience in calendar systems and product management.
According to Khimji, Blockit AI functions as an intelligent calendar that schedules tasks by understanding context and managing complex workflows.
The app is offered free for the first 30 days, after which it is priced at $1,000 per year for individual users and $5,000 per year for a multi-user team licence.
Sequoia said Blockit operates on a freemium subscription model, positioning it as a platform that replaces work rather than software, with the potential to scale into a $1 billion-plus revenue business.
“Time is our most precious resource. For most people, that resource is suboptimally allocated with high-touch, high-friction, expensive scheduling. Thanks to the magic of LLMs, Blockit is building a world in which time is optimally allocated, painlessly,” Grady wrote in a blog post.
The product is already being used by more than 200 companies, including startups such as Together AI, which builds open-source generative AI infrastructure; Brex, a fintech firm offering corporate cards and spend management tools; and Rogo, an AI-powered financial analysis platform.
Blockit AI is also used by leading VC firms, including Andreessen Horowitz (a16z), Accel, and Index Ventures, which collectively back some of the world’s most prominent technology startups.
Blockit AI now enters a crowded market of AI-powered scheduling and calendar tools aimed at reducing back-and-forth and automating time management.
Its closest competitors include Calendly, the widely used meeting scheduler that integrates with major calendar platforms and was last valued at $3 billion, according to a TechCrunch report.
Other rivals include Reclaim.ai, which dynamically blocks and optimises time for tasks and habits, and newer entrants such as Lindy, which links scheduling with broader workflow coordination.
