Washington | You may never have heard of Mrinank Sharma before. And given his next move is to “become invisible” for a time and study poetry, it’s possible you will not hear of him in the future, either.

But for a moment this week, the artificial intelligence researcher gained a little notoriety by posting a resignation letter on social media, outlining his reasons for leaving Anthropic, the $US350 billion ($500 billion) maker of the Claude family of large language models.

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