Anthropic was founded at the beginning of 2021 by a team of seven people who moved together from OpenAI.
Resolved true The record shows it happened or was so.
Factual: Statements about the present or the past, checked against the record: did they hold up?
Said for an organisation they lead or work for; it counts on both records.
What would count as true or false
Two parts: founding at the beginning of 2021, and a founding team of seven people who moved together from OpenAI. TRUE: incorporation records or company/founder accounts date the founding to early 2021 (roughly January–March) and describe the founding team as seven former OpenAI staff who left together. MOSTLY TRUE: both parts hold apart from a minor slip, such as founding a little later in the first half of 2021, the count being given as seven while one member joined slightly later, or a count off by one. MIXED: one part holds and the other clearly does not (for example a founding in late 2021, or a team much larger than seven or not mainly from OpenAI). MOSTLY FALSE: both parts are significantly off but rest on a real basis (for example the founding was in 2021 but the original team was many more people with varied backgrounds). FALSE: Anthropic was not founded in 2021 and was not founded by former OpenAI staff.
Set before the research began.
Evidence (4)
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E1 Document U.S. Securities and Exchange Commission (Anthropic, PBC Amended and Restated Certificate of Incorporation, filed as exhibit) · 26 October 2026
“The Certificate of Incorporation of this corporation was originally filed with the Secretary of State of Delaware on January 26, 2021.”
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E2 Anthropic - Wikipedia Wikipedia
“Anthropic was founded in January 2021[1] by seven former employees of OpenAI, including siblings Daniela Amodei and Dario Amodei, the latter of whom was OpenAI's Vice President of Research.”
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E3 Anthropic targets $2T IPO, seven ex-OpenAI founders lock 50.1% voting power Chosun Biz (The Chosun Ilbo English edition) · 29 October 2026
“but it is a corporations established by the Amodei siblings and five employees who worked with them at OpenAI coming together.”
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E4 Anthropic raises $124 million Series A Anthropic · 28 May 2021 Own record
“The company is led by siblings Dario Amodei (CEO) and Daniela Amodei (President).”
Reasoning
The amended certificate of incorporation filed with the SEC [E1] shows Anthropic's Delaware incorporation was first filed on January 26, 2021. That fits "the beginning of 2021." Wikipedia [E2] says the company was founded in January 2021 by seven former OpenAI employees. A 2026 Chosun Biz report [E3] describes the founders as the Amodei siblings plus five people who had worked with them at OpenAI, which also makes seven. Both parts of the claim are supported.
Cite this claim
Daniela Amodei, “Anthropic was founded at the beginning of 2021 by a team of seven people who moved together from OpenAI.” (said 2022). Verdict: resolved true. Reliability API, claim c_e1e9bff66dd7, method 0.1.0+28da144b, dataset release v1.1.2. https://epistacklabs.com/claims/c_e1e9bff66dd7
This claim is in dataset release v1.1.2, with the same verdict.
Reply to this claim
More factual claims by Daniela Amodei
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Mostly false
“This was an immovable baseline established from day one.”
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Resolved true
“We announced that, subject to stockholder approval, we are setting aside at least 5% of our shares to fund projects in pursuit of our public benefit charter.”
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Mostly true
“So there were seven of us that originally left, me and Dario and our five co-founders”
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Resolved true
“the majority of our revenue comes from businesses”
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Resolved true
“Now it looks like a great decision, but at the time, it was about 40 people.”
Verdicts are made automatically; how verdicts are made.