Last refreshed 2026-06-15. Next refresh: weekly.
Why use Gemini 3.1 Flash Lite Preview on GCP Vertex AI?
GCP Vertex AI offers Gemini 3.1 Flash Lite Preview with pay-as-you-go pricing at $0.25/1M 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 Gemini 3.1 Flash Lite Preview across 4 providers to find the best fit for your use caseInput / 1M
$0.25
Output / 1M
$1.50
Cache
Not sourced
Batch
Not sourced
Setup recipe
Python + curlInstall
pip install google-cloud-aiplatformAuth
export GOOGLE_CLOUD_PROJECT=...Call
import os
import vertexai
from vertexai.generative_models import GenerativeModel
vertexai.init(project=os.environ["GOOGLE_CLOUD_PROJECT"], location="us-central1")Model ID
gemini-3.1-flash-lite-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-3.1-flash-lite-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.
Compare Gemini 3.1 Flash Lite Preview Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Google AI Studio | $0.25 | $1.50 |
| GCP Vertex AI | $0.25 | $1.50 |
| OpenRouter | $0.25 | $1.50 |
| Vercel AI Gateway | $0.25 | $1.50 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.25 |
| Output tokens | $1.50 |
Capabilities
VisionMultimodalJSON / Tool useStructured OutputsCode Execution
About Gemini 3.1 Flash Lite Preview
Preview-stage Gemini 3.1 Flash-Lite model shut down on 2026-05-25; use gemini-3.1-flash-lite GA instead.
Model Specs
Released2026-03-03
Context1m
ArchitectureDecoder Only
Knowledge cutoff2025-01