Overview
Provider Type
Trial CreditsAPI Endpoint
https://aiplatform.googleapis.com/v1/publishers/google/models/MODEL_ID:generateContent
Free Tier Highlights
Why Choose Google Vertex AI express mode (Gemini Enterprise Agent Platform)?
Google Vertex AI express mode (Gemini Enterprise Agent Platform) stands out for its unique features and capabilities. With a developer-friendly API and comprehensive documentation, you can integrate AI capabilities into your applications within minutes.
Quick Start Guide
Sign up for express mode at console.cloud.google.com/expressmode with a Google account
copy the API key
POST to aiplatform.googleapis.com/v1/publishers/google/models/gemini-2.5-flash:generateContent with x-goog-api-key
Available Models
| Model Name | ID | Context | Capabilities | |
|---|---|---|---|---|
| Gemini 3.1 Pro Preview Free |
gemini-3.1-pro-preview
|
1 000 000 Context |
- | |
| Gemini 3 Flash Preview Free |
gemini-3-flash-preview
|
1 000 000 Context |
- | |
| Gemini 2.5 Pro Free |
gemini-2.5-pro
|
1 000 000 Context |
- | |
| Gemini 2.5 Flash Free |
gemini-2.5-flash
|
1 000 000 Context |
- | |
| Gemini 2.5 Flash-Lite Free |
gemini-2.5-flash-lite
|
1 000 000 Context |
- |
Free Tier Pricing & Limits
Rate Limit
Requests per minute
Daily Quota
Requests per day
Free Credits
Up to 90 days for new Google Cloud users
Use Cases
Trying Vertex-specific Gemini access before enabling billing
prototypes needing Gemini 3 Pro
Limitations & Considerations
90-day window for new users only (third-party notes say a @gmail.com account)
low quotas (10 RPM on 2.5)
Live API not supported
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