Anthropic surpasses OpenAI to become most valuable AI startup

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- Anthropic raised $65 billion in a Series H round, led by Altimeter Capital, Dragoneer, Greenoaks and Sequoia Capital, pushing its valuation close to $1 trillion.
- Anthropic's annual revenue jumped from about $10 billion to $47 billion, driven by its Claude AI assistant and Claude Code service.
- Anthropic launched Claude Opus 4.8 and the closed‑system Claude Mythos Preview, adding advanced cybersecurity capabilities for enterprise customers.
- Amazon contributed a $5 billion investment as part of the funding round, reinforcing its partnership with Anthropic.
- OpenAI was valued at $852 billion after a $122 billion funding round.
Why it matters: Investors gain a trillion‑dollar AI contender, while developers benefit from expanded Claude services; OpenAI’s restructuring shifts talent, and Amazon’s $5 billion stake ties its e‑commerce roadmap to Anthropic’s tech.



