Meta has reportedly delayed the release of its flagship Behemoth AI model due to concerns about its capabilities.

Engineers at the Facebook owner are struggling to significantly improve the capabilities of the Behemoth large language model, and staff are questioning whether improvements from earlier versions are sufficient enough to justify public release, according to the Wall Street Journal, citing people familiar with the matter.

Behemoth had been scheduled for release in April to coincide with Meta's inaugural AI conference for developers, but the targeted release date was later pushed back to June.

It has now been delayed until the autumn or later.

Meta said in April that it was previewing Llama 4 Behemoth, which it called "one of the smartest LLMs in the world and our most powerful yet to serve as a teacher for our new models".

It released the latest version of its LLM Llama, called the Llama 4 Scout and Llama 4 Maverick, that month.

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