Anthropic's IPO filing says either side can cancel $34.9 billion of its $41.3 billion Lambda deal

A missed lease date opened a $34.9 billion door

AnthropicPVT$350B — Anthropic, private, latest valuation $350B, the AI company behind the Claude models, filed the second amendment to its IPO registration↗ on November 10, 2026 ¹. It discloses that LambdaPVT$10.27B — Lambda, private, latest valuation $10.27B, a GPU cloud provider backed by Nvidia▼−5.72% — Nvidia, down 5.72 percent today, missed the contractual date to secure the facility lease behind their August 2026 agreement, so that agreement, about $34.9 billion of the roughly $41.3 billion Anthropic has contracted to spend with Lambda into 2034, "is currently terminable by either party" ¹. Neither side has served notice, and Anthropic says it does "not currently intend to terminate the agreement" ¹.

The option sits under a live fundraising

Lambda is mid-raise: having sold $1 billion of GPU-backed debt in October, it is seeking up to $4 billion at a $14.5 billion pre-money valuation in a final round before a planned 2027 IPO, led by the investors Blackstone▼−0.71% — Blackstone, down 0.71 percent today and Coatue, the Wall Street Journal reported on October 6 ²³, and the round was still being marketed this week ⁴. A letter to Lambda's investors↗, reviewed by the Journal, put its backlog at $50 billion in September, up from $15 billion in June, mostly the Anthropic commitment ²³. Anthropic is roughly 70% of that backlog, by one estimate ⁵.

A walk would land on Hut 8 and Nvidia

The filing names no site; its size and timing match roughly 350 megawatts of Anthropic capacity↗ reported at Beacon Point, the campus the data-center developer Hut 8▲+3.95% — Hut 8, up 3.95 percent today is building in Nueces County, Texas ⁶⁷. Nvidia sits on three sides of the same trade at once: Lambda's investor, its chip supplier, and the leaseholder on that campus, where its leases are worth up to $50 billion ⁶⁷. Hut 8 has contracted 704 megawatts there in two 15-year leases worth $19.6 billion at base, up to $50.2 billion with renewals, and has named its tenant only as a high-investment-grade counterparty ⁷.

A fifth of a $900.9 billion book can still leave

Anthropic's total committed spend is about $900.9 billion, and $186.2 billion of it sits behind exercisable termination rights or unmet conditions, such as a counterparty securing a facility ¹. The same filing raised the floor on what Anthropic cannot escape: at least $47.2 billion to Microsoft through June 2033↗ regardless of usage, up from $44.9 billion in the November 2 version ¹⁶. The named book splits three ways: hard minimums from Google, Amazon▼−1.20% — Amazon, down 1.20 percent today and Microsoft▼−2.43% — Microsoft, down 2.43 percent today; delivery-dependent ceilings from SpaceXAI, the SpaceX▼−3.35% — SpaceX, down 3.35 percent today subsidiary formerly called xAIPVT$200B — xAI, private, latest valuation $200B, and the GPU cloud Nscale; and Lambda's $41.3 billion ¹.

The option outlasts the stated intention

Fees accrue only as capacity is delivered and accepted, so Anthropic pays nothing for megawatts that never arrive ¹. Staying can also be read as confidence in Lambda's delivery ⁵. But "currently" is the operative word, and a stated intention does not change the contract; neither company has said why the lease slipped ¹⁶.

Three tells settle it: Lambda secures the lease or a termination notice lands; the Blackstone round closes or reprices; and Anthropic prices its 825 million Class A shares inside the $70 to $78 range set in the same filing ¹. The $50 billion backlog counts as revenue only while Anthropic chooses to stay ¹.