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

Anthropic has seen significant revenue growth, reaching $16.29 billion in the first half of 2026. OpenAI continues to expand its business model while generating substantial revenues from its consumer and enterprise offerings. Both companies face financial pressures as they invest heavily in infrastructure and computing power. The competition between Anthropic and OpenAI is primarily driven by their customer acquisition strategies and operational efficiencies.