# Llama3 405B Instruct API Pricing

As of October 10, 2026, Llama3 405B Instruct is free to use on Google Vertex AI. It has a 32,000-token context window and returns up to 32,000 tokens per response.

- Page: https://models.litellm.ai/models/llama3-405b-instruct
- Lab: Meta
- LiteLLM model name: `vertex_ai/meta/llama3-405b-instruct-maas`
- Context window: 32,000 tokens
- Max output: 32,000 tokens
- Added to LiteLLM: July 2024
- Prices updated: October 10, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| Google Vertex AI | `vertex_ai/meta/llama3-405b-instruct-maas` | $0 | $0 | – | – | – | 32K |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- Google Vertex AI: $0

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="vertex_ai/meta/llama3-405b-instruct-maas",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does Llama3 405B Instruct cost?

Llama3 405B Instruct is free to use on Google Vertex AI.

### What is the context window of Llama3 405B Instruct?

Llama3 405B Instruct has a 32,000-token context window and returns up to 32,000 tokens per response.

### Which providers offer Llama3 405B Instruct?

Llama3 405B Instruct is available from Google Vertex AI through LiteLLM, using the model name vertex_ai/meta/llama3-405b-instruct-maas.

### How do I call Llama3 405B Instruct with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="vertex_ai/meta/llama3-405b-instruct-maas", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### When did LiteLLM add Llama3 405B Instruct?

Llama3 405B Instruct was added to LiteLLM's model price file in July 2024.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json