Anthropic vs OpenAI: How Claude maker’s growth is challenging ChatGPT ahead of IPO

What happened: Anthropic unveiled its IPO filing on Monday, reporting first half 2026 revenue of $16.29 billion, while OpenAI reported second quarter revenue of $6.7 billion. Key numbers: Anthropic revenue $16.29 billion in first half 2026, up from $4.59 billion in 2025 and $386 million in 2024. Why it matters: The figures suggest Anthropic has built momentum in the enterprise market, but differing treatment of cloud partner sales makes headline revenue hard to compare. Both companies face heavy computing costs and large infrastructure commitments. Coverage: 3 outlets in 24h

Anthropic's growth challenges ChatGPT ahead of IPO, signaling competitive AI market shifts.

Anthropic's growth challenges ChatGPT ahead of IPO, signaling competitive AI market shifts. — impact context not separately stored; see What changed.