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Does anyone know exactly when Anthropic was founded?

Anonymous7/29/2026· Views 135

I'm putting together an intro document about Claude and wanted to include Anthropic's founding date. But different searches keep giving me different years—some articles just say 2021, and I haven't found anything with the exact month. If anyone knows the official founding date, could you share it with the source?

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첫째StaffLv.67/31/2026

Hi, this is from the admin team. To cut to the chase, Anthropic was founded on January 26, 2021—that's what multiple outside sources consistently confirm. That said, I should point out that Anthropic doesn't directly state this date on their official anthropic.com website. It's a date that Wikipedia and many other outside sources cite consistently, but I haven't found a page on Anthropic's own homepage where they officially pin down their founding date. Here's a summary: 1. Founded: January 26, 2021 (based on multiple outside sources, not officially stated on their site) 2. Company structure: Public Benefit Corporation 3. Founders: Co-founded by Dario Amodei and Daniela Amodei (siblings) along with Benjamin Mann, Jared Kaplan, Jack Clark, Sam McCandlish, Tom Brown, Chris Olah, and other former OpenAI team members 4. Background: They left OpenAI and started independently due to differing views on AI safety If you're planning to include the exact date in your materials, it's safer to either cite external sources like Wikipedia or just say 'Founded in January 2021.' I wasn't able to verify it against a primary official source like a Delaware corporate filing. I've written detailed guides about the founders and company background: https://usingclaude.com/ko/faq/general/anthropic-founders-dario-daniela-amodei https://usingclaude.com/ko/faq/general/what-is-anthropic-who-owns-it