Anthropic raises $65B Series H at $965B valuation, overtaking OpenAI

Anthropic's $65 billion Series H, struck at a $965 billion post-money valuation, vaults it past OpenAI to become the most valuable AI company in the world. The round leans heavily on its two strategic cloud and model backers: Google committing roughly $40 billion and Amazon roughly $25 billion, deepening the unusual dual-hyperscaler dependency that already routes Claude through both Vertex AI and Bedrock.

The scale of the raise underscores how capital-intensive the frontier-model race has become, with funding now tracking compute commitments rather than near-term revenue. Anthropic's reported ~$47B run-rate revenue became the focal point of skepticism: r/MachineLearning and Hacker News commenters argued a typical 10x multiple would justify only ~$470B, implying the valuation prices in aggressive continued growth. Supporters countered that Claude has become the default enterprise platform, growing faster than OpenAI, with ~47% enterprise adoption.

The timing — same day as the Opus 4.8 launch — is no accident; Anthropic is bundling a product milestone with a capital milestone to reinforce momentum. The key question for readers is sustainability: a $965B valuation backed by its two largest infrastructure suppliers raises governance and concentration questions, and ties Anthropic's fortunes tightly to Google and Amazon's continued willingness to fund a partner that also competes with their in-house models.