Prometheus, Jeff Bezos’ AI startup, has reportedly leased an entire waterfront office building from the Sobrato Organization, taking 180,000 square feet at 1 Harrison Street in San Francisco, the San Francisco Chronicle reported, citing multiple industry insiders. Prometheus has reportedly leased all six floors at the One Harrison building; if finalized, the lease would deliver the single tenant Sobrato had been seeking. Sobrato paid more than $80 million for the building in 2023, and the refreshed property, formerly occupied by the Gap subsidiary Athleta, features an updated interior and a redesigned fourth-floor corner office once used by Gap co-founder Don Fisher. Prometheus already occupies 30,000 square feet at nearby 101 Mission Street and has been searching for additional space; it also leased a 100,000-square-foot warehouse in west Oakland this summer for AI-focused product design and manufacturing work. The reported deal comes as San Francisco’s office market remains far from a full recovery, with vacancy at nearly 28 percent in the third quarter, per the Chronicle, though the city recorded five consecutive quarters of positive net absorption as AI companies including OpenAI, Anthropic and Databricks committed to major leases. Prometheus was founded last year by Bezos and former Alphabet executive Vik Bajaj, who co-founded Google Life Sciences, and is developing AI tools for engineering and manufacturing. The company launched with $6.2 billion in backing and raised another $12 billion this summer, reaching a