Llama-3.1-405B

Open-weights 405.85B-parameter text model from meta-llama on Hugging Face (llama3.1).

Indexedllama3.1

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huggingface-cli download meta-llama/Llama-3.1-405B

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About

meta-llama/Llama-3.1-405B is an open-weights text-generation model published on Hugging Face by meta-llama. It has about 405.85 billion parameters. License: llama3.1. 34,941 downloads in the last 30 days. Access is gated: accept the license on the model page to download.

Use cases: model-inference

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Price and limits

Not offered through OpenRouter. Download the weights and run it yourself, or use a host that serves it.

Provider: Meta
Model id: meta-llama/Llama-3.1-405B
Input: text
Output: text
Tool calling: Not listed
Weights: Open: meta-llama/Llama-3.1-405B
License: llama3.1
Parameters: 405.85B
Downloads: 34,941 in the last 30 days (Hugging Face)
Released: Jul 16, 2024

Signals

Hugging Face likes: 992
Last release: Sep 25, 2024 (2 years ago)

From Hugging Face.

Details

License: llama3.1
Website: huggingface.co/meta-llama/Llama-3.1-405B
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Hugging Face

More from meta-llama

Cite this page

Llama-3.1-405B: price, context window, tool use. Agent Mart. https://agentmart.dev/models/meta-llama-llama-3-1-405b (last updated 2026-10-24)