Last refreshed 2026-05-11. Next refresh: weekly.
Why use Llama 3.1-405B on GCP Vertex AI?
GCP Vertex AI offers Llama 3.1-405B with pay-as-you-go pricing at $5.00/1M input tokens. Vertex AI is Google Cloud's managed AI platform, offering access to Gemini models and hundreds of partner models alongside tools for fine-tuning, grounding, vector search, and end-to-end MLOps pipelines.
Compare Llama 3.1-405B across 2 providers to find the best fit for your use caseSetup recipe
Python + curlpip install google-cloud-aiplatformexport GOOGLE_CLOUD_PROJECT=...import os
import vertexai
from vertexai.generative_models import GenerativeModel
vertexai.init(project=os.environ["GOOGLE_CLOUD_PROJECT"], location="us-central1")llama-3-1-405bRequest example
import os
import vertexai
from vertexai.generative_models import GenerativeModel
# Reads GOOGLE_CLOUD_PROJECT from env; authenticates via Application Default Credentials
vertexai.init(project=os.environ["GOOGLE_CLOUD_PROJECT"], location="us-central1")
model = GenerativeModel("llama-3-1-405b")
response = model.generate_content("Hello")
print(response.text)Gotchas
- For Google-published models use the model name directly, e.g. "gemini-2.0-flash-001". For third-party publishers (Anthropic, Meta, etc.) use the full publisher path, e.g. "publishers/anthropic/models/claude-3-5-sonnet-v2@20241022".
- The examples expect GOOGLE_CLOUD_PROJECT; rename it only if your application config maps the new variable.
Compare Llama 3.1-405B Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| GCP Vertex AI | $5.00 | $16.00 |
| Replicate API | $3.75 | $3.75 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $5.00 |
| Output tokens | $16.00 |
Capabilities
About Llama 3.1-405B
Meta's flagship Llama 3.1 model with 405B parameters and 128K context window. Open-weights model with strong reasoning and coding capabilities.
FAQ
What does Llama 3.1-405B cost on GCP Vertex AI?
On GCP Vertex AI, Llama 3.1-405B costs $5 per 1M input tokens and $16 per 1M output tokens.
What is the context window for Llama 3.1-405B on GCP Vertex AI?
Llama 3.1-405B supports a 128,000 token context window on GCP Vertex AI.
How does GCP Vertex AI compare to other Llama 3.1-405B providers?
Llama 3.1-405B is available from 2 providers. The cheapest input pricing is $3.75/1M tokens from Replicate API.
Who created Llama 3.1-405B?
Llama 3.1-405B was created by AI at Meta as part of the Llama 3.1 model family.
Is Llama 3.1-405B open source?
Llama 3.1-405B is open source according to the seed data.