Llama 3.1 405B Instruct
Meta's frontier-scale 405B instruction model with 128K context, multilingual reasoning, tool use, downloadable weights and mass partner distribution.
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Why this model scores 67.8
Near-frontier general capability, tool use and direct instruction following combine with downloadable weights and broad hosting, creating high misuse potential and persistent control difficulty despite compute requirements.
News tied to Llama 3.1 405B Instruct
The model score of 67.8 rates this model's risk profile. The overall Doom Index of 67.9 measures the complete temporally weighted evidence record. These values answer different questions.
Each article's current Doom Index contribution is divided equally among the exact models named on that article. This prevents multi-model evidence from being claimed in full on several model pages. Model risk scores use a bounded temporal offset around their technical profile, but never feed back into the overall index.
Meta releases frontier-scale Llama 3.1 open models
Meta released Llama 3.1 in 8B, 70B and 405B base and instruction tiers with 128K context, multilingual support, tool use, downloadable weights and day-one distribution through more than 25 partners.
- Full item contribution
- +0.22
- Llama 3.1 405B Instruct equal share
- +0.04
Model score history
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R3
Doom Score 67.8
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-142416 under temporal-monthly-pressure-v4.
12 Aug 2026 -
R2
Doom Score 68.0
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-132112 under fixed-sensitivity-v3.
12 Aug 2026 -
R1
Doom Score 68.6
New exact Llama 3.1 405B instruction checkpoint.
12 Aug 2026