IPO COMPARISON — JULY 28, 2026
● OpenAI: $852B (March 2026), S-1 filed June 8, Goldman/Morgan Stanley, September-November target
● Anthropic: $965B implied pre-IPO (IG markets), confidential filing June 1, no confirmed target date
● Revenue — OpenAI: $2B/month, enterprise 40%+ of revenue, not profitable
● Revenue — Anthropic: Has pulled ahead of OpenAI among business customers per CNBC
● Key OpenAI risk: Hugging Face breach disclosure, Kimi pricing pressure, nonprofit Foundation governance overhang
● Key Anthropic risk: $1.25B/month compute dependency on SpaceXAI competitor (Musk clause)
Two frontier AI labs targeting the same listing window creates an unusual situation for institutional investors. Both have similar products, overlapping enterprise customers, and comparable revenue multiples. The differentiation will come down to governance (OpenAI's Foundation structure vs Anthropic's standard PBC), safety posture (Anthropic's FLI C+ vs OpenAI's C grade and breach disclosure), and growth trajectory (OpenAI's ChatGPT consumer base vs Anthropic's business customer lead). According to Decode the Future's analysis, Anthropic has pulled ahead on business revenue — which may explain why its implied valuation ($965B) exceeds OpenAI's last private round ($852B) despite OpenAI's larger consumer base.
Last updated July 28, 2026. Related: OpenAI IPO full investor brief → · Three-way IPO comparison →