Last refreshed 2026-05-11. Next refresh: weekly.
Why use Gemini 3 Pro Preview on GCP Vertex AI?
GCP Vertex AI offers Gemini 3 Pro Preview with pay-as-you-go pricing at $2.00/1M 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.
Setup 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")gemini-3-pro-previewRequest 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("gemini-3-pro-preview")
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.
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $2.00 |
| Output tokens | $12.00 |
Capabilities
About Gemini 3 Pro Preview
Deprecated/shut down March 9, 2026. Vertex: $0.20/$12.00 (<=200K), $0.40/$18.00 (>200K). Migrate to Gemini 3.1 Pro.
FAQ
What does Gemini 3 Pro Preview cost on GCP Vertex AI?
On GCP Vertex AI, Gemini 3 Pro Preview costs $2.00 per 1M input tokens and $12.00 per 1M output tokens.
What is the context window for Gemini 3 Pro Preview on GCP Vertex AI?
Gemini 3 Pro Preview supports a 1,000,000 token context window on GCP Vertex AI.
Who created Gemini 3 Pro Preview?
Gemini 3 Pro Preview was created by Google DeepMind as part of the Gemini 3 model family.
Is Gemini 3 Pro Preview open source?
Gemini 3 Pro Preview is not open source; the seed data lists it as proprietary.