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Zuckerberg attacks closed AI rivals OpenAI and Anthropic as Meta returns to open models

8/11/2026

Open-source artificial intelligence, meaning AI whose underlying model weights are published so anyone can freely download and use them, is back at the center of a public industry dispute.

Meta's founder Mark Zuckerberg has named OpenAI and Anthropic as examples of a "closed" approach he says powerful AI should move away from.

His pitch: Meta is returning to openly available models, and his named rivals are the reason the distinction matters.

What Zuckerberg is actually arguing Closed AI, in this context, means a company keeps its model behind a proprietary interface or API. Outside developers can use the outputs.

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