Anthropic Long-Term Benefit Trust — Founded Date: May 2023

Note: The claim states the founded date as 2023-05 (May 2023). The source confirms that the charter was amended in May 2023 (per the additional context provided), but the source text itself only explicitly mentions the September 19, 2023 public announcement date. The source says the LTBT 'has been developing since the birth of Anthropic' but does not explicitly state a May 2023 founding date in the excerpt provided. The additional context supports May 2023 as the charter amendment date, which aligns with the claim, but the source text alone does not explicitly confirm this specific date—it only confirms the September 2023 announcement. This is a partial confirmation based on the additional context provided.