Anthropic adds over $10 billion in compute commitments to Microsoft and Google ahead of IPO

Anthropic has added more than $10 billion in new minimum compute commitments to Microsoft and Google, according to a revised S-1 filing tied to its planned initial public offering.

The updated disclosure raises the Claude developer’s minimum obligation to Microsoft to at least $44.9 billion. Its commitment to Google now sits at approximately $121.3 billion.

What the filing shows

The amended S-1 reflects the added commitments as of early November 2026. It follows Anthropic’s initial S-1, which was dated October 26, 2026.

The Microsoft agreement runs through mid-2033. The Google deal extends through July 2033.

Both are largely non-cancelable, with the main exception being a material breach.

They also require payment whether or not Anthropic actually uses the computing capacity it has reserved. The agreements include provisions for true-ups, which are periodic reconciliations that settle the gap between what was committed and what was consumed.

Industry shorthand for this arrangement is take-or-pay. The buyer either takes the capacity or pays for it anyway. For Anthropic, the effect is to convert what would otherwise be variable computing costs into fixed obligations.

The bigger infrastructure picture

Anthropic’s total compute and infrastructure commitments stood at around $895.4 billion as of late September 2026.

Amazon accounts for a minimum commitment of approximately $110 billion. Broadcom is tied to equipment leases estimated at about $161.2 billion.

Google, at approximately $121.3 billion, ranks as the largest single cloud commitment named in the disclosure. Microsoft, at least $44.9 billion, is smaller but still sizable.

Anthropic previously announced a commitment of roughly $30 billion to Azure, Microsoft’s cloud platform, in November 2025.

Anthropic is preparing to list on the Nasdaq under the proposed ticker ANT.