Elon Musk says Grok currently trails Anthropic’s latest model
Musk’s on‑record admission is notable because it signals xAI’s public acknowledgment of a performance gap and outlines a strategic rationale to use proprietary physical‑world datasets to improve Grok.
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Musk said he was wrong about Anthropic’s standing and called Anthropic the current leader.
He described Grok as a "solid workhorse" but inferior to Claude/Opus 5.5 (per the interview/report).
He projected xAI could close the gap by deeper integration with SpaceX and Tesla data streams.
Reports note xAI’s aggressive Colossus GPU expansion and internal use of Grok at Tesla/SpaceX.
Observers framed the remark as a rare public concession from Musk about model parity.