Llama
3.1-405B: an open source model to rival GPT-4o / Claude-3.5
In plain words
Llama 3.1 is an open-source AI model released by Meta in three sizes: 405B, 70B, and 8B. The largest model, 405B, is designed to compete with leading closed-source models like GPT-4o and Claude 3.5. The suite includes upgrades to smaller variants, offering developers flexible options for building AI applications. Available on GitHub, these models represent a significant shift toward open-source alternatives for advanced AI capabilities.
written from the facts on this page · September 2026
From the sources
Meta is releasing three models: The new 3.1-405B and upgrades to their smaller models: 3.1-70B and 3.1-8B. If 405B is as good as the benchmarks indicate, this would be the first time an open source model rivaled the best closed models—a profound shift.
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