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brianletort.aiD. Brian Letort, Ph.D.

AI Market · Forecast desk · partial · capital

80% · partial

Anthropic round closes at a final post-money valuation between $900B and $1.1T with at least three of (Sequoia, Dragoneer, Altimeter, Greenoaks) named as lead investors publicly.

Back to the bookIssue 2026-W21

Outcome

partialcalled at 80%brier contribution 0.090conjunctive

Valuation condition HIT: the round closed May 28 as a $65B Series H at a $965B post-money, inside the $900B-$1.1T band. The named-lead-investor condition is not yet publicly confirmed in-window, so scored partial pending the full lead roster before the June 13 deadline.