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Favicon for meta-llama

Meta: Llama 3.1 405B Instruct

meta-llama/llama-3.1-405b-instruct:free

Model weights

The highly anticipated 400B class of Llama3 is here! Clocking in at 128k context with impressive eval scores, the Meta AI team continues to push the frontier of open-source LLMs.

Meta's latest class of model (Llama 3.1) launched with a variety of sizes & flavors. This 405B instruct-tuned version is optimized for high quality dialogue usecases.

It has demonstrated strong performance compared to leading closed-source models including GPT-4o and Claude 3.5 Sonnet in evaluations.

To read more about the model release, click here(opens in new tab). Usage of this model is subject to Meta's Acceptable Use Policy(opens in new tab).

Modalities

Price

Free

Context

131K

Released

Jul 23, 2024

Knowledge Cutoff

Dec 2023

ActivityFAQ

Activity

Token volume and request traffic to this model over time.

About Meta: Llama 3.1 405B Instruct

OpenRouter makes Meta: Llama 3.1 405B Instruct by Meta Llama available through a unified, OpenAI-compatible API using the model ID meta-llama/llama-3.1-405b-instruct.

Meta: Llama 3.1 405B Instruct accepts text and returns text. It has a 131,072-token context window.

It was released on July 23, 2024; its knowledge cutoff is December 31, 2023.

More models from Meta Llama

  • Llama Guard 4 12B
  • Llama 4 Maverick
  • Llama 4 Scout

Frequently asked questions

The highly anticipated 400B class of Llama3 is here! Clocking in at 128k context with impressive eval scores, the Meta AI team continues to push the frontier of open-source LLMs. Meta's latest class of model (Llama 3.1) launched with a variety of sizes & flavors. This 405B instruct-tuned version is optimized for high quality dialogue usecases.

Yes. The pricing shown on this page for Llama 3.1 405B Instruct is zero, so you are not charged for prompt or completion tokens. Free endpoints are rate limited — see the rate limit docs.

Llama 3.1 405B Instruct has a 131,072 token context window.

Llama Guard 4 12B, Llama 4 Maverick, Llama 4 Scout and 5 more are other text models from Meta Llama.

Llama 3.1 405B Instruct was released on July 23, 2024. Its knowledge cutoff is December 31, 2023.