The Sequoia-led Series A values the startup at $300 million as it makes its post-training platform publicly available.
Anthropic expected to offer IPO shares to Australian retail investors
CommSec said it would lead the Australian retail offer if the IPO proceeds, but Anthropic is not seeking an Australian Securities Exchange listing.

Anthropic is expected to include an offer for Australian retail investors in a prospectus to be submitted to Australia's corporate regulator, Commonwealth Securities (CommSec) said on November 3. The Claude developer has filed for a U.S. initial public offering.
CommSec, Commonwealth Bank of Australia's brokerage arm, said its role as lead Australian retail broker would depend on the IPO proceeding. It said Anthropic would not seek an Australian Securities Exchange listing.
Anthropic is expected to go public before Thanksgiving. Once the offering closes, its shares will trade on Nasdaq with the symbol ANT.
According to a media report, some existing and potential investors are considering a valuation of $1.5 trillion, compared with roughly $2 trillion previously, following financial disclosures at a recent investor event.
The company expects nearly half of its $895.4 billion in AI infrastructure spending commitments to be incurred before December 31, 2030. Those commitments have added to investor concerns as they assess whether AI capital spending can generate returns that support valuations.
