Meta: Llama 3.1 405B Instruct
meta-llama/llama-3.1-405b-instruct
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. Usage of this model is subject to Meta's Acceptable Use Policy.
Sample code and API for Llama 3.1 405B Instruct
OpenRouter normalizes requests and responses across providers for you.
OpenRouter provides an OpenAI-compatible completion API to 0 models & providers that you can call directly, or using the OpenAI SDK. Additionally, some third-party SDKs are available.
In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards.
Using the OpenAI SDK
import OpenAI from "openai"
const openai = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: "<OPENROUTER_API_KEY>",
defaultHeaders: {
"HTTP-Referer": "<YOUR_SITE_URL>", // Optional. Site URL for rankings on openrouter.ai.
"X-Title": "<YOUR_SITE_NAME>", // Optional. Site title for rankings on openrouter.ai.
}
})
async function main() {
const completion = await openai.chat.completions.create({
model: "meta-llama/llama-3.1-405b-instruct",
messages: [
{
"role": "user",
"content": "What is the meaning of life?"
}
]
})
console.log(completion.choices[0].message)
}
main()
Using the OpenRouter API directly
fetch("https://openrouter.ai/api/v1/chat/completions", {
method: "POST",
headers: {
"Authorization": "Bearer <OPENROUTER_API_KEY>",
"HTTP-Referer": "<YOUR_SITE_URL>", // Optional. Site URL for rankings on openrouter.ai.
"X-Title": "<YOUR_SITE_NAME>", // Optional. Site title for rankings on openrouter.ai.
"Content-Type": "application/json"
},
body: JSON.stringify({
"model": "meta-llama/llama-3.1-405b-instruct",
"messages": [
{
"role": "user",
"content": "What is the meaning of life?"
}
]
})
});
Using third-party SDKs
For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.
See the Request docs for all possible parameters, and Parameters for recommended values.