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That is the May valuation Anthropic carried into summer as it held the frontier benchmark lead and found itself the only major AI lab absent from an open-weight policy letter co-led by Nvidia CEO Jensen Huang.
The company is preparing for an IPO that could push that figure past $1 trillion, yet its refusal to join Google and OpenAI on the open-weight question has widened rifts with developers, policymakers, and partners at the same moment it is strongest commercially.
The open-weight letter Anthropic skipped Google and OpenAI, Anthropic's two largest closed-model rivals, signed the letter urging Washington not to restrict open-weight models. Dozens of other companies joined.
CEO Dario Amodei addressed the gap Monday in a blog post, saying the company has never called for banning open models and describing less capable open models as "a public good." He did not sign.
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