Dario Amodei says Anthropic plans for notably more than 10 GW of compute in 2027-2028 in a new Dwarkesh Patel interview. At 57:26:
I think Feb 2026 is too early for full commitments for 2028 that can't be delayed, because most of the capex in a datacenter is in compute equipment, which likely only needs to be purchased within the last year before it goes online. If the revenue isn't there, the purchase can likely be delayed, possibly until the next generation of compute hardware.
The compute hardware is about 70% of the capex cost. For the other things (that mostly have to be built first), the useful life is 10-15 years rather than 5 years, and so the yearly commitments are disproportionately smaller than for compute, and there is no opex to speak of. This cuts $10-15bn per year per GW for a datacenter that's already online down to maybe $2bn per year for an empty shell of a datacenter (including power purchase commitments, which could take the form of on-site power, with similarly long useful life). Thus an empty shell of a datacenter (even a powered one) can wait for revenue that triggers the purchase of compute equipment at about 6x less in ongoing yearly payments, given a notice (about the need for a delay) of a few months to a year before the planned time of the datacenter going online. If even the empty shell wasn't built yet and only the land and permissions are being set up, delaying is even cheaper, and that can happen with 1-2 years of notice before the planned time of going online, as times of construction for the Abilene system and Colossus 1-2 demonstrate.
Thus compute planned for a year from now can get 6x cheaper if delayed now, and compute planned in 2+ years can get maybe 25x cheaper if delayed now. Planning for $300bn per year of compute in 2028 (25 GW, $1,250bn in capex) might mean you have $30bn per year of compute (2.5 GW) in 2026, that you plan for $70bn per year of additional compute to go online in 2027 (bringing the total to $100bn per ye