Blackstone Inc. is expanding its investment in Anthropic PBC, the company behind the Claude AI models, increasing its total stake to roughly $1 billion at the startup's present valuation.
The alternative asset manager added $200 million to its existing investment as part of Anthropic's ongoing funding round. That increment is tied to a valuation for the company of $350 billion, according to people familiar with the matter who asked not to be identified because the information is private.
Anthropic has raised interest from a wide range of investors during the current capital-raising effort. The company initially set a fundraising target of $10 billion but has already outpaced that figure, more than doubling the initial goal because of strong demand from potential backers.
The additional capital from Blackstone reflects growing institutional interest in the artificial intelligence sector, and in particular in companies developing large language models. Blackstone's move increases the firm's exposure to Anthropic at the valuation level described above and is part of the wider financing that has swelled beyond its first stated target.
Details available indicate that the funding round remains active and that investor appetite has driven the overall amount raised past the initial benchmark. The involvement of major financial institutions is noted as an indicator of the broader market's attention to AI developers and their technologies.
Context and implications
While specific terms beyond the $200 million addition and the cited $350 billion valuation were not disclosed publicly by company officials, the combined picture from participants indicates substantial demand for Anthropic's shares or financing commitments. The company is known for developing the Claude AI family of models, and this funding round has seen commitments that exceed its first announced objective.
Observers will be watching the completion of the ongoing round and any subsequent disclosures for greater clarity on total proceeds and investor composition. For now, Blackstone's enlarged position is a notable development in the flow of private capital toward large language model developers.