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Llama 3.1-405B

Meta AI · 2024 · LLM · USA

Llama 3.1-405B floppy-disk dossier card

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A to Z

A · App
Yes
B · Built By
Meta AI
C · CEO & Politics
Mark Zuckerberg — Centrist / shifted right 2024–26; accommodative of Trump admin; July 2026 WSJ op-ed on distributed superintelligence
D · Date
2024
E · Expertise
Beginner (app available)
F · Free Tier
Yes
G · Generates
Images
H · Deployment
Cloud + Local (open weights)
I · Inputs
Text
J · Jurisdiction
USA
K · Key Staffers
Alexandr Wang (Chief AI Officer, Meta Superintelligence Labs), Nat Friedman (MSL co-lead), Chris Cox (Chief Product Officer)
L · Languages
English-primary
M · Model Type
LLM
N · Safety Issues
None reported
O · Open Source
Yes — open weights
P · Pricing
Free (open weights, Llama 3.1 Community License)
Q · AIDb Rating
5/10 · AIDb v2.0 (rule-based): Capability 4/10 · Currency 4/10 · Access 10/10 · Significance 5/10 → 5.05
R · What Makes It Special
Largest model in Meta's Llama 3.1 family (405B parameters), in pretrained and instruction-tuned versions: multilingual text in, text and code out, with a 128K context and grouped-query attention, pretrained on 15T+ tokens (knowledge cutoff December 2023); officially supports English, German, French, Italian, Portuguese, Hindi, Spanish and Thai.
S · Stock / Status
$752 (META, Sep 25, 2026)
T · Training Cutoff
[UNKNOWN]
U · Users
[UNKNOWN]
V · Voice Chat
Yes
W · Weights
Downloadable
X · X Handle
@AIatMeta
Y · Year Founded
[UNKNOWN]
Z · Bottom Line
Open-weights LLM from Meta AI, released 2024.

Data completeness 88% · Last verified 2026-08-09 · Primary source ↗

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“Llama 3.1-405B.” AIDb — The AI Database. Verified 2026-08-09. https://theaidatabase.com/m/llama-3-1-405b-meta-ai.html

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