This means that business information will remain under wraps for now, while the documents are being reviewed by the regulator.
"The proposed initial public offering will depend on market conditions and other factors," Anthropic said.
Anthropic said last week it had raised $US65 billion ($A91 billion) in private funding that will push its valuation to $US965 billion, a number that makes the five-year-old maker of the Claude chatbot one of the world's most valuable startups.
The company, which was formed in 2021 by ex-OpenAI leaders as a little-known research laboratory, last week launched its newest AI model called Claude Opus 4.8, boasting that it is even better at coding and other professional work than previous models.
The IPO could be one of the three largest this year.
OpenAI is also rumoured to have IPO ambitions that could be on a similar scale.
Elon Musk's space firm SpaceX, which has now also absorbed his AI firm xAI, could go public as early as mid-June.
At the same time, questions remain over whether the hundreds of billions of dollars being invested in artificial intelligence infrastructure can ultimately generate sufficient returns.
Anthropic, OpenAI and SpaceX have all been losing more money than they make, fuelling concerns of an AI bubble.
with AP
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