Claude 2 vs Llama 3.1-405B

Claude 2 (Anthropic) and Llama 3.1-405B (Meta AI) are both frontier AI models. Claude 2 was published in July 2023 and Llama 3.1-405B in July 2024.

Llama 3.1-405B was trained on 3.8×10²⁵ FLOP, about 9.8x the compute of Claude 2 at 3.9×10²⁴ FLOP. Training compute is the closest available proxy for how much was invested in a model, though it says nothing on its own about how well that compute was spent.

Llama 3.1-405B wins the single benchmark both were scored on. Benchmark counts are a crude scoreboard — the evaluations differ wildly in what they measure and in how saturated they are — so the per-benchmark table below matters more than the tally.