OpenAI’s decision to delay an IPO until 2027 stems primarily from CEO Sam Altman’s September emphasis on prioritizing AI safety, alignment, and regulatory coordination before exposing the company to public-market scrutiny. The firm confidentially filed an S-1 in June and is now accelerating a roughly $30 billion private round at a $1.25–1.4 trillion valuation to fund infrastructure and bolster its balance sheet ahead of rival Anthropic’s expected mid-November listing. This follows OpenAI’s March valuation of $852 billion and recent large language model releases that have driven annualized revenue toward $70 billion. Traders are monitoring how Anthropic’s debut performs, any further model capability benchmarks, and whether softening AI investment sentiment could compress timelines or valuations for a 2027 OpenAI listing.