Apollo Global Management and Blackstone finalized a $35 billion funding round for Anthropic, the AI research company behind Claude, with prediction markets pricing the company's December valuation at $1.25 trillion with 88% probability. The joint commitment represents the largest single venture round closed by credit-focused alternative asset managers.
The round structured as AI infrastructure financing rather than equity marks a shift in how credit allocators underwrite computational buildout. Blackstone and Apollo committed capital against Anthropic's data center expansion and chip procurement rather than software development alone. The financing included covenants tied to compute capacity deployment rather than traditional revenue multiples. Anthropic disclosed the round would fund 400,000 H100-equivalent GPU deployments across six facilities through Q2 2026.
The $1.25 trillion implied valuation surfaces from Polymarket and Kalshi contract pricing, not disclosed round terms. The 88% probability reflects market maker positioning after the funding close, up from 61% on the contracts three weeks prior. The December timing aligns with Anthropic's planned release of Claude 4, which the company projects will achieve benchmark performance exceeding GPT-5 on reasoning tasks. Prediction market volumes on the valuation question exceeded $12 million in notional, enough liquidity to represent institutional information flow rather than retail speculation.
The credit approach matters because it establishes infrastructure financing as a parallel track to equity dilution for frontier AI companies. OpenAI raised $6.6 billion in October 2024 at a $157 billion post-money valuation through equity. Anthropic's structure allows founders to maintain ownership while accessing growth capital through asset-backed commitments. The model works only if compute infrastructure holds resale value independent of the company's software success—a thesis Blackstone and Apollo are now underwriting at scale.
Allocators should watch three developments: Anthropic's actual December valuation disclosure, expected within 45 days of year-end; Blackstone and Apollo's disclosed returns on prior AI infrastructure bets, which will surface in Q1 2025 fund letters; and competing credit structures from Sixth Street, Ares, and KKR, who are preparing similar compute-backed facilities for other frontier labs. The facilities will likely close in Q1 if Anthropic's structure proves profitable.
The $35 billion commitment is double Apollo's entire technology credit book as of Q3 2024. The position concentration signals belief that AI infrastructure holds the same predictability as telecom towers or data centers, assets that generated mid-teens IRRs for credit investors over the past decade. The December valuation contracts will settle in 38 days.