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Anthropic signs $111.34 million lease for SoMa high-rise building

February 2, 2026

Things appear to be going well for Anthropic, despite still facing several copyright lawsuits.

Earlier in January, Anthropic closed a $10 billion funding round, with a valuation of $350 billion.

Anthropic raises $10B, valued at $350B.

Then, last week came news that Anthropic signed a $111.34 million lease for an office building in SoMa, 300 Howard Street.

Anthropic recently signed a lease for the entire office building at 300 Howard Street in San Francisco's South of Market neighborhood. Reports confirm it's approximately 420,000 square feet (slightly more than the 400,000 sq ft mentioned, but close—some sources round it to "more… pic.twitter.com/eDnRGl55Gw
— Sanfranciscobroker (@SFdealmaker) January 31, 2026

@irisrents
SF is not dead! Link in bio to find the best SF Apartments! #sf #sanfrancisco #sfrealestate #bayarea #sanfranciscorealestate
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According to SF Gate, Anthropic has 2,500 employees.

Mayor Lurie announced the lease. I guess Anthropic is here to stay.

@danielluriesf
In one of the largest office leases since before the pandemic, Anthropic is taking over an entire building in downtown San Francisco. This expansion will bring more people to our downtown and strengthen our innovation economy. This new lease is a clear sign of our recovery—and a strong vote of confidence in our city.
♬ original sound – Daniel Lurie

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