Anthropic draft IPO filing shows roughly $31 billion of committed payments to Microsoft

A draft prospectus from Anthropic, reviewed by the Wall Street Journal and summarized by Benzinga, lists more than $600 billion of long-term computing commitments. Within that total, Anthropic plans payments to Microsoft of about $31 billion, which would be owed even if Anthropic does not use all the capacity covered. The filing ties Microsoft to a large external AI customer's compute obligations at a time when Anthropic's IPO is reportedly approaching.

1. Anthropic's draft IPO prospectus, as reviewed by the Wall Street Journal, shows more than $600 billion in long-term computing capacity commitments.
2. The draft details planned payments of $111 billion to Alphabet, $110 billion to Amazon and $31 billion to Microsoft.
3. Those planned payments apply even if Anthropic does not use all the computing capacity covered by the agreements.
4. Benzinga reported on October 22, 2026 that an Anthropic IPO step could come as soon as that Friday.