Meta Launches Llama 3.1 405B – A Landmark Step for Open AI
Meta has announced the release of Llama 3.1, featuring the 405B flagship model, which stands as the largest open AI model to date and challenges commercial proprietary alternatives.

What happened?
Meta has officially launched its new AI model series, Llama 3.1, led by the flagship Llama 3.1 405B. The model, which features 405 billion parameters, is described by the company as the world's largest and most capable open frontier AI model. The series also includes updated versions of the 8B and 70B models, an expanded context window of up to 128,000 tokens, and support for eight different languages.
Key facts
| Största modellstorlek | 405 miljarder parametrar |
|---|---|
| Kontextfönster | 128 000 token |
| Språkstöd | 8 språk |
Why it matters
Llama 3.1 405B represents a milestone for open-source AI, as it challenges leading proprietary models such as OpenAI’s GPT-4o and Anthropic’s offerings in performance tests. By providing open model weights, Meta is lowering the barriers to advanced AI development and altering market dynamics against closed ecosystems.
Who is affected?
The launch is primarily aimed at AI researchers, software developers, and companies looking to deploy or fine-tune their own large language models without relying on closed cloud services. It is also directly relevant to organizations seeking high performance with full control over data and infrastructure.
Impact on the EU
Llama 3.1 405B and the smaller models in the series are available globally for download and use. Developers within the EU can download the model weights; however, the integration of these models into Meta’s consumer services in Europe remains affected by EU data protection regulations and GDPR, specifically regarding training on user data.
What else you should know
The model was trained on more than 15 trillion tokens and utilized over 16,000 Nvidia H100 GPUs. Alongside the release, Meta is providing expanded safety tools, including Llama Guard 3 and Prompt Guard.
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Kan utvecklare i EU använda Llama 3.1?
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