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MetaOpen-weight·131K context·405B params·Llama 3.1 Community License

Llama 3.1 405B Instructmeta/llama-3-1-405b-instruct

Meta's largest open-weight model — 405B dense Transformer. Widely hosted (Fireworks, Together, Replicate, etc.); the reference point for open-weight flagship quality.

Pricing across providers

No current verified API pricing is listed. See the official model documentation for availability and billing.

Capabilities

  • chat
  • reasoning
  • code
  • tool_use

Languages: en, de, fr, es, it, pt, hi, th

Technical specs

Context
131K
Max output
4K
Parameters
405B
Release
—
Training cutoff
—
License
Llama 3.1 Community License
Hugging Face →Official documentation →

Similar models

Compare with

  • Llama 3.1 405B Instruct vs Hunyuan-Large
    Comparison planned — not yet published

Frequently asked

How much does Llama 3.1 405B Instruct cost?+
No current verified API pricing is listed. This does not mean the model is free or that a hosted API is currently available. Check the official model documentation below.
Is Llama 3.1 405B Instruct open-source? Can I fine-tune it?+
Llama 3.1 405B Instruct has published weights. License: Llama 3.1 Community License. Review the linked repository and license for deployment, fine-tuning and commercial-use conditions.
What's the maximum context window for Llama 3.1 405B Instruct?+
The model supports up to 131,072 tokens of context (input + output). Some hosted versions may impose a smaller limit — check the "Context" column in the pricing matrix for each provider.