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Elon Musk's xAI reportedly trained its coding models on Claude outputs for months before getting cut off

Elon Musk's xAI used Anthropic's Claude to train its own coding models for months, continuing even after Anthropic cut off access by using private accounts and the Blackbox AI service. The company's pretraining team has since shrunk to fewer than five people, with several leads leaving, and the computing power Musk purchased is now being rented to Anthropic and Google instead of powering xAI's own models.

read1 min publishedJun 6, 2026

Elon Musk's xAI used Anthropic's Claude to train its own coding models for months and kept going even after Anthropic cut off access, using private accounts and the Blackbox AI service. Meanwhile, xAI's pretraining team shrank to fewer than five people, and several leads walked out. The compute Musk bought up is now being rented to Anthropic and Google instead of powering his own models.

The article Elon Musk's xAI reportedly trained its coding models on Claude outputs for months before getting cut off appeared first on The Decoder.

source & further reading
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