Anthropic Files for IPO at Projected $1.5 Trillion Valuation, Disclosing $637 Billion in Cloud Commitments

Anthropic, the San Francisco-based AI company founded by former OpenAI researchers, filed for a public offering that could value it at $1.5 trillion or more, marking a pivotal moment in the race for dominance in large language models. The company's SEC S-1 filing on October 26, 2026, disclosed sweeping commitments to cloud infrastructure partnerships with Amazon Web Services, Google Cloud, Microsoft, Broadcom, and SpaceX, totaling $637 billion in named compute contracts through 2036.