GoKawiilIn this photo illustration, the Anthropic logo is seen on a smartphone with a Claude Mythos logo in the background.
The Anthropic-Fable news landed at an awkward moment late Friday. Roughly two hours earlier, SpaceX had wrapped up its first day of trading following the biggest IPO on record. SpaceX's xAI unit is a niche player in artificial intelligence, but CEO Elon Musk is an outspoken voice on the topic.
Investors have been trading on that theme. MiniMax and Zhipu , the Chinese open-source AI lab, both surged on Monday as the Anthropic fight put a spotlight on downloadable models that companies can run themselves.
"The last thing any of us want is a world where every company across every sector is ceding value to a few models that eat everything they see," Nadella wrote.
Microsoft CEO Satya Nadella is warning of the risks, even as his company is the principal investor in OpenAI, and backed Anthropic last year to the tune of billions of dollars. He wrote Monday in a post on X that companies need to "build agentic systems that improve over time, while still retaining control over their IP."
It's been a big theme this week, and one that Wall Street will be watching closely as Anthropic and OpenAI gear up for potentially massive IPOs in the coming months.
Anthropic's suspension of its top AI models late last week drove home a hard truth for the companies that were counting on them: access can be cut off at any time.
Anthropic announced it had pulled access to its Fable 5 and Mythos 5 models to comply with an export control directive from the U.S. government that cited "national security authorities." Anthropic abruptly disabled the models for all of its customers in order to ensure compliance, but said all of its other models would not be affected.
For developers who want full control over model access, there's another approach. An open-source model can be downloaded, run on a company's own infrastructure, and customized for its data and needs. When the model lives on a company's own servers, no political fight can switch it off.
Yash Patel, CEO of Applied Compute, which helps companies train and run custom models, said the Anthropic fight "highlighted the significance of owning your own model." He said the shift has become much more mainstream of late.
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