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Blackstone Lifts Anthropic Stake to About $1 Billion in Round Valuing AI Lab at $350 Billion

Investor demand tied to Anthropic’s Opus 4.6 launch is propelling an oversubscribed financing round.

Overview

  • Blackstone is committing an additional $200 million to Anthropic, taking its position to about $1 billion at a roughly $350 billion valuation, according to people familiar with the deal.
  • The funding round remains open and oversubscribed, with total proceeds expected to exceed the original $10 billion target and potentially surpass $20 billion, industry reports say.
  • Coatue, GIC, and Iconiq have each lined up commitments of more than $1 billion, strategic investors such as NVIDIA and Microsoft are reported to be participating, and Abu Dhabi’s MGX is said to be nearing a deal.
  • Anthropic launched Opus 4.6 last week, a flagship model the company says improves reasoning, coding, and complex text generation and can handle longer tasks with greater reliability.
  • The model’s debut preceded a selloff in U.S. and European software stocks as investors weighed the risk that accelerating generative AI adoption could undercut traditional software business models, Reuters reported.