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From OpenAI to Exa Labs, storied San Francisco building remains a magnet for AI startups

Pioneer Building in the Mission District enters latest tech chapter
The Pioneer Building in San Francisco's Mission District was built in 1902 as a factory to make trunks for early automobiles. (CoStar)
The Pioneer Building in San Francisco's Mission District was built in 1902 as a factory to make trunks for early automobiles. (CoStar)
CoStar News
August 19, 2026 | 2:32 P.M.

As artificial intelligence startups reshape San Francisco's office market, one of the city's most recognizable tech outposts is getting a new tenant.

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