Llama 3.1 405B large language model by Meta AI

Active

Jul 23, 2024

ProducerMeta AI

FamilyLlama

APIOpen WeightsLocal RunCloud

Llama 3.1 405B

LLMTool-Using

Open-weight dense language model by Meta AI with 405 billion parameters, 128K token context window, and tool use support, released July 23, 2024.

Technical specification

Context window

128K tokenów

Parameters

License

Llama 3.1 Community License

Tools

Yes

Fine-tuning

Yes

Weights access

Open weights

Last updated: Apr 20, 2026

Modalities

Input

Text

Image

Output

Text

Code

Structured data

Capabilities

Reasoning★

Reasoning

Multi-step reasoning★

Reasoning

Long context★

Reasoning

Coding★

Coding

Function Calling

Planning

Structured output★

Structured gen.

Image understanding★

Vision

Chart understanding

Vision

OCR★

Vision

Multilingual★

Language

Planning★

Planning

Streaming output

Reasoning

Sources

Technical report1Website2Repository2Documentation2Blog1

The Llama 3.1 Model Family

ai.meta.comTechnical report

Introducing Llama 3.1

ai.meta.comWebsite

meta-llama models

huggingface.coRepository

Llama 3.1 405B – Hugging Face Model Card (base)

huggingface.coDocumentation

Llama 3.1 405B Instruct – Hugging Face Model Card

huggingface.coDocumentation

Introducing Llama 3.1 – Meta AI Blog

ai.meta.comBlog

Llama 3.1 Official Page – llama.com

llama.comWebsite

Llama 3.1 Eval Details – meta-llama/llama-models GitHub

github.comRepository

Llama 3.1 405BLlama 3.1 405BLlama 3.1 405B

Technical specification

Modalities

Capabilities

Sources

Llama 3.1 405B