Anthropic opens employee share sale at a $350 billion valuation

Three and a half hundred billion dollars. That is how much Anthropic is currently worth, according to Bloomberg — a company that just four years ago was a modest startup founded by a group of former OpenAI employees. Now it is offering its current and former employees the opportunity to sell shares for a total of up to six billion dollars, and at the same valuation that was established in a recent round of thirty billion dollars in funding. For dozens, and possibly hundreds of engineers and researchers, this means one thing: the opportunity to turn lines in an options agreement into real money.

The mechanism Anthropic is using is well known in Silicon Valley. Secondary stock sales — the so-called tender offer — allow employees of private companies to realize their shares without waiting for an IPO. Buyers are typically institutional investors, hedge funds, and specialized secondary market funds willing to pay a premium for access to the hottest non-public assets. In Anthropic's case, the $350 billion valuation puts the company in the same league as giants like Salesforce or Netflix by market capitalization, even though it has not yet conducted a single public offering.

The context of this deal cannot be understood without reference to the arms race in the artificial intelligence industry. Anthropic recently closed a colossal $30 billion funding round, one of the largest venture investments in the history of the technology sector. The company, creator of the Claude family of models, is actively ramping up computing power, expanding its team of researchers, and competing for corporate clients with OpenAI, Google DeepMind, and surging Chinese competitors. The $350 billion valuation reflects not so much the company's current revenue — though it, by all accounts, is growing rapidly — but rather investors' bet that Anthropic will be among the two or three companies that will define the future of the industry.

For the employees themselves, the secondary sale program is something more than just an opportunity to earn money. It is a retention tool. The AI industry is experiencing an unprecedented war for talent: leading researchers and engineers receive offers with compensation in the tens of millions of dollars, and transitions between competing labs have become commonplace.

When an employee can cash out some of their options right now, without waiting for a hypothetical IPO years down the road, they have one fewer reason to leave for a competitor offering real money. OpenAI has used a similar strategy repeatedly, conducting tender offers as valuations increased. Anthropic is essentially reproducing this scenario, but the scale is impressive — six billion dollars on the secondary market for a company not yet five years old.

It is also worth paying attention to the broader picture. Valuations of leading AI startups have reached levels that two years ago seemed fantastic. OpenAI is currently valued in the range of $300–350 billion, Elon Musk's xAI raised funds at a valuation of over $50 billion. Together, these companies are forming a new class of "super-unicorns," whose combined valuation exceeds a trillion dollars — and this while none of them has yet gone public. Critics point to signs of a bubble: AI company revenues, while growing rapidly, are still not commensurate with valuations. Proponents argue that this is a technology that will reshape the world economy, and that current multiples reflect potential, not the current state of the business.

For Anthropic, the share sale program carries a reputational signal as well. By offering employees liquidity at the valuation of the latest round, the company demonstrates confidence that this valuation is fair and sustainable. If management expected a correction, it would make more sense to postpone the tender offer or conduct it at a more conservative price. The fact that external investors are willing to buy shares from employees on the same terms as in the main round speaks to high demand for a stake in the company.

Ultimately, the story of Anthropic is a story of how quickly artificial intelligence is rewriting the rules of venture capital. The company founded by Dario and Daniela Amodei in 2021 with a mission to create safe AI has, in a matter of years, become one of the most expensive private technology companies in the world. Six billion dollars that its employees can now pocket is not just a generous bonus. It is a marker of an era in which language model development generates wealth at a speed unseen even by Silicon Valley standards.