Llama 3.1 405B Instruct

Which Llama 3.1 405B Instruct does this page describe?

Llama 3.1 405B Instruct is a model record from Meta in the Llama 3.1 family. Source

The recorded model identifier or checkpoint is meta-llama/Llama-3.1-405B-Instruct. Use that exact identifier when checking documentation or a provider listing. Source

How can you access Llama 3.1 405B Instruct?

The catalog documents Open weights access for Llama 3.1 405B Instruct. Source

As of the catalog check, this version was listed as available. Source

Open weights means the model weights are distributed for use under their stated terms. It does not establish a hosted API, an open-source license, or a hardware requirement.

What are Llama 3.1 405B Instruct's context and output limits?

The documented context window is 128,000 tokens. Source

A separate maximum-output value is not established in this record. The context or input figure should not be used as an output allowance.

Context, input and output limits describe different constraints. Do not add the figures together to infer a larger window. Check the endpoint's accounting for conversation history, system instructions, tools, media and generated tokens; a documented maximum is not a guarantee of answer quality or a measured usable capacity.

What dates are documented for Llama 3.1 405B Instruct?

Knowledge cutoff: December 2023. Source This labels the documented knowledge boundary; it is not a promise that every earlier fact is known or correct.

Release date: July 23, 2024. Source This is a release milestone, not a knowledge or training cutoff. The source labels this “Model Release Date.”

Retrieval or web tools can supply newer information at run time. That does not change the model's recorded training or knowledge dates, and this record does not establish that a particular endpoint includes those tools.

What can Llama 3.1 405B Instruct receive and generate?

Documented inputs: text. Source

Documented outputs: text. Source

Input support and output generation are separate capabilities. Reading an image does not establish image generation; a text output listing does not establish speech output. File sizes, formats and media limits depend on the documented implementation.

What license is recorded for Llama 3.1 405B Instruct?

The recorded license label is Llama 3.1 Community License. Source

Read the linked license and associated use terms for this exact version before redistribution, commercial deployment or fine-tuning. A label alone does not establish every permission, restriction or obligation, and it does not determine the terms of a separate hosted service.

What is documented about the Llama 3.1 405B Instruct checkpoint?

This evidence refers to meta-llama/Llama-3.1-405B-Instruct at recorded revision be673f326cab4cd22ccfef76109faf68e41aa5f1, checked October 23, 2026. Repository metadata

Safetensors metadata records 405,853,388,800 stored parameters. This is a stored-weight count, not necessarily the number activated per token, a download size or a GPU-memory requirement. Repository metadata

Recorded architecture class: LlamaForCausalLM. Repository metadata

Repository task tag: text-generation. A task tag identifies a distribution category; it does not measure performance on that task. Repository metadata

Listed library: transformers. Check that library's version and model support before loading the weights. Repository metadata

Repository language labels: en, de, fr, it, pt, hi, es, and th. These labels are not independent evaluations of language quality. Repository metadata

Repository access gate: manual. This records the repository's gate setting when checked; licensing and use terms still apply. Repository metadata

Read the retrieved model card for setup and qualifications. Model card