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Funding Round: Series D (Amazon Strategic Investment) (Anthropic)

Verdictcontradicted95%
1 check · 4/7/2026

The record claims the Series D round was '$4 billion (Amazon Strategic Investment)' with a valuation of $18.1 billion in 2023-09. However, the source clearly distinguishes between: (1) Amazon's $4 billion investment in late 2023 (paid in two pieces), and (2) the Series D round of $750 million led by Menlo Ventures in February 2024. These are two separate funding events. The $4 billion Amazon investment is not the Series D round. The date is also incorrect—the Series D occurred in February 2024, not September 2023. The valuation of $18.1 billion is confirmed, but it occurred 'by early 2024,' not in September 2023.

Our claim

entire record
Company
Anthropic
Company
Anthropic
Name
Series D (Amazon Strategic Investment)
Date
September 2023
Raised
4000000000
Raised Low
4000000000
Raised High
4000000000
Valuation
18100000000
Valuation Low
18100000000
Valuation High
18100000000
Instrument
equity
Lead Investor
Amazon
Lead Investor
Amazon
Notes
Amazon committed up to $4B paid in two tranches (first in Sept 2023, second in Nov 2024). Brought total Amazon investment to $8B. Included AWS as primary cloud and training partner. Valuation reached $18.1B by early 2024.

Source evidence

1 src · 1 check
contradicted95%Haiku 4.5 · 4/7/2026

NoteThe record claims the Series D round was '$4 billion (Amazon Strategic Investment)' with a valuation of $18.1 billion in 2023-09. However, the source clearly distinguishes between: (1) Amazon's $4 billion investment in late 2023 (paid in two pieces), and (2) the Series D round of $750 million led by Menlo Ventures in February 2024. These are two separate funding events. The $4 billion Amazon investment is not the Series D round. The date is also incorrect—the Series D occurred in February 2024, not September 2023. The valuation of $18.1 billion is confirmed, but it occurred 'by early 2024,' not in September 2023.

Case № QI0dF1b51CFiled 4/7/2026Confidence 95%