Llama 4 Behemoth

Claims and evidence

• Announced 5 April 2025Previewed in the Llama 4 announcement as a teacher model that was still training; no release date was given. ● Primary source[1]page date; Takeaways
• ReleasedRelease date unknown

• Status AnnouncedPreviewed while still in training; Meta said it was not yet releasing the model. No later Meta source reporting a release, weights or API access was found as of 2026-10-01. ● Primary source[1]Takeaways; opening paragraphs

• Change · Size Nearly two trillion total parameters, with 288B active per token; Meta presents it as taking Llama to new sizes.Compared with Llama 3.1 ● Primary source[1]Takeaways; Pushing Llama to new sizes: The 2T Behemoth
• Change · Architecture Mixture-of-experts model with 16 experts, trained as the teacher model for distilling the smaller Llama 4 models.Compared with Llama 3.1 ● Primary source[1]

• Parameters c. 288B active parameters, nearly two trillion total parametersMixture-of-experts model with 16 experts. Meta gives the total only as nearly two trillion (section heading: The 2T Behemoth); the value is that approximation. ● Primary source[1]Takeaways; Pushing Llama to new sizes: The 2T Behemoth

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