Google Vertex AI: gemini-3.1-pro-preview

Input price
$2/1M tokens
Output price
$12/1M tokens

Capabilities

Infrastructure
Streaming

Details

Model IDgoogle-vertex-ai/gemini-3.1-pro-preview
Provider Cloudflare AI Gateway
Creator Google Vertex AI
Familygemini-3.1
License—
Status—
Typechat
Input modalitiestext
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window—
Max input—
Max output—
Reasoning tokens—
Knowledge cutoff—
Release date
Sourceofficial

Pricing

Input
$2
Output
$12
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: gemini-3.1

ModelContextMax outPricing
Google AI Studio: gemini-3.1-flash-lite-preview-20260303——$0.25$1.5
Google AI Studio: gemini-3.1-flash-lite-preview1.0M66K$0.25$1.5
OpenRouter: google/gemini-3.1-flash-lite-preview-20260303——$0.25$1.5
OpenRouter: google/gemini-3.1-flash-lite-preview——$0.25$1.5
Google AI Studio: gemini-3.1-flash-image-preview-20260226——$0.5$3
Google AI Studio: gemini-3.1-flash-image-preview131K33K$0.5$3
OpenRouter: google/gemini-3.1-flash-image-preview-20260226——$0.5$3
OpenRouter: google/gemini-3.1-flash-image-preview——$0.5$3
Google AI Studio: gemini-3.1-pro-preview-20260219——$2$12
Google AI Studio: gemini-3.1-pro-preview-customtools-20260219——$2$12
Google AI Studio: gemini-3.1-pro-preview-customtools——$2$12
Google AI Studio: gemini-3.1-pro-preview1.0M66K$2$12
Google Vertex AI: gemini-3.1-pro-preview-customtools——$2$12
Google Vertex AI: gemini-3.1-pro-preview——$2$12
OpenRouter: google/gemini-3.1-pro-preview-20260219——$2$12
OpenRouter: google/gemini-3.1-pro-preview-customtools-20260219——$2$12
OpenRouter: google/gemini-3.1-pro-preview-customtools——$2$12
OpenRouter: google/gemini-3.1-pro-preview——$2$12

API

GET/v1/models/cloudflare-ai-gateway/google-vertex-ai/gemini-3.1-pro-preview

Google Vertex AI: gemini-3.1-pro-preview

google-vertex-ai/gemini-3.1-pro-preview
Changes · 3 entries
google-vertex-ai/gemini-3.1-pro-previewupdate1cd659eMar 24, 2026, 04:19 AM
modalitiesinput["text"]output["text"]
google-vertex-ai/gemini-3.1-pro-previewupdate2b100acMar 23, 2026, 05:30 AM
model_typechat
google-vertex-ai/gemini-3.1-pro-previewcreate7a4f1f6Mar 22, 2026, 05:43 AM