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A D-Central model profile documents Llama 3.3 as a single 70B dense transformer released by Meta in December 2024, positioning it as a post-training refresh of the Llama 3.1 70B backbone rather than a from-scratch retrain. The page credits Meta as developer, lists the model under the Llama family with the Llama 3.3 Com Technical details on the profile show the architecture is unchanged from 3.1 70B — same 80 layers, 8192 hidden dim, SwiGLU activations, RoPE positional encoding, and Grouped-Query Attention — with the gains attributed to an improved instruction-tuning pipeline: better RLHF datasets, a stronger reward model, and an adde