Anthropic overtakes OpenAI as most valuable AI startup with $965B valuation

Anthropic overtakes OpenAI as most valuable AI startup with $965B valuation

Anthropic announced a $65 billion Series H financing round at a $965 billion valuation, surpassing OpenAI's $852 billion valuation. The round was led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, and includes $15 billion in previously committed investments, including $5 billion from Amazon. Anthropic reported a $47 billion revenue run rate, up from $30 billion earlier in 2026, driven by its Claude Code coding assistant and new models Claude Opus 4.8 and Claude Mythos Preview.

Why it matters: This marks a definitive shift in the foundation-model hierarchy. Anthropic has not only caught up to OpenAI in valuation but overtaken it, while reporting explosive revenue growth that suggests its bet on developer tooling and enterprise cybersecurity is paying off. The funding round, one of the largest in AI history, also sets the stage for a potential IPO race among Anthropic, OpenAI, and SpaceXAI, a capital-compression arc that will test whether any of these labs can sustain their trillion-dollar ambitions in public markets.

Grounded expert take: Anthropic's climb to the top of the valuation leaderboard reflects a broader re-rating of the foundation-model segment. While OpenAI has dominated headlines with consumer products and massive capital raises, Anthropic has quietly built a revenue engine around Claude Code — a developer tool that now appears to be the fastest-growing product in the coding-assistant space. The inclusion of cybersecurity capabilities in Claude Mythos Preview also signals a move into enterprise verticals where margins are higher and switching costs are stickier. However, the near-$1 trillion valuation leaves little room for error; the company will need to demonstrate that its revenue trajectory can sustain such a multiple, especially as OpenAI and SpaceXAI prepare their own public offerings.