---
title: Google: Gemini 3.1 Pro Preview | Text Generation | ModelsLab
description: Advanced multimodal reasoning model with 1M token context, 106 tokens/sec speed, excels in coding and complex problem-solving across text, image, video.
url: https://modelslab.com/models/google/google-gemini-3.1-pro-preview/api.md
canonical: https://modelslab.com/models/google/google-gemini-3.1-pro-preview/api.md
type: product
component: Playground/LLM/Index
generated_at: 2026-04-17T11:40:03.079375Z
---

Google: Gemini 3.1 Pro Preview
---

 [LLMs.txt](https://modelslab.com/models/open_router/google-gemini-3.1-pro-preview/llms.txt) [.md](https://modelslab.com/models/google/google-gemini-3.1-pro-preview.md)

google-gemini-3.1-pro-preview google Closed Source Model $7.000000 / call

Google: Gemini 3.1 Pro Preview
---

Choose a prompt below to get started or type your own message

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Send

### Google: Gemini 3.1 Pro Preview

google google-gemini-3.1-pro-preview

Copy model ID

PricingInput $2.00 / 1M tokens

Output $12.00 / 1M tokens

API EndpointsOpenAI Compatible

`https://modelslab.com/api/v7/llm/chat/completions`Endpoint

Anthropic Compatible

`https://modelslab.com/api/v7/llm/v1/messages`Messages

`https://modelslab.com/api/v7/llm/v1/messages/count_tokens`Count Tokens

`https://modelslab.com/api/v7/llm/v1/models`Models

Use with Claude Code

cURL Example

ParametersSystem MessageYou are a helpful AI assistant specialized in providing accurate and detailed responses.

Temperature0.7

Max Tokens1000

Top P0.9

Frequency Penalty0

Presence Penalty0

Model Info

Support

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About Google: Gemini 3.1 Pro Preview
---

Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...

### Technical Specifications

Model IDgoogle-gemini-3.1-pro-previewCategoryLLM ModelsTaskText GenerationPrice$7.000000 per million tokensAddedFebruary 20, 2026

### Key Features

- Chat completion and multi-turn conversation API
- Streaming response with token-by-token output
- Function calling and tool use support
- System prompts and role-based messaging
- JSON mode and structured output

### Quick Start

Integrate Google: Gemini 3.1 Pro Preview into your application with a single API call. Get your API key from the [pricing page](https://modelslab.com/pricing) to get started.

PythonJavaScriptcURLPHP

```
<code>import requests
import json

url = "https://modelslab.com/api/v7/llm/chat/completions"

headers = {
    "Content-Type": "application/json"
}

data = {
        "model_id": "google-gemini-3.1-pro-preview",
        "messages": [
            {
                "role": "user",
                "content": "Hello!"
            }
        ],
        "max_tokens": 1000,
        "key": "YOUR_API_KEY"
    }

try:
    response = requests.post(url, headers=headers, json=data)
    response.raise_for_status()  # Raises an HTTPError for bad responses (4XX or 5XX)
    result = response.json()
    print("API Response:")
    print(json.dumps(result, indent=2))
except requests.exceptions.HTTPError as http_err:
    print(f"HTTP error occurred: {http_err} - {response.text}")
except Exception as err:
    print(f"Other error occurred: {err}")</code>
```

View the [full API documentation](https://modelslab.com/models/google/google-gemini-3.1-pro-preview/api) for SDKs, code examples in Python, JavaScript, and more.

### Pricing

Google: Gemini 3.1 Pro Preview API costs $7.000000 per million tokens. Pay only for what you use with no minimum commitments. [View pricing plans](https://modelslab.com/pricing)

### Use Cases

- AI chatbots and virtual assistants
- Code generation and developer tools
- Content writing and copywriting automation
- Data analysis, summarization, and extraction

[Learn more about Google: Gemini 3.1 Pro Preview](https://modelslab.com/google-gemini-31-pro-preview) [Browse LLM Models](https://modelslab.com/models?feature=llmaster) [More from Google](https://modelslab.com/models/open_router) [View Pricing](https://modelslab.com/pricing)

Google: Gemini 3.1 Pro Preview FAQ
---

### What is Google: Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...

### How do I use the Google: Gemini 3.1 Pro Preview API?

You can integrate Google: Gemini 3.1 Pro Preview into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "google-gemini-3.1-pro-preview" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation.

### How much does Google: Gemini 3.1 Pro Preview cost?

Google: Gemini 3.1 Pro Preview costs $7.000000 per million tokens. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started.

### What is the Google: Gemini 3.1 Pro Preview model ID?

The model ID for Google: Gemini 3.1 Pro Preview is "google-gemini-3.1-pro-preview". Use this ID in your API requests to specify this model.

### Does Google: Gemini 3.1 Pro Preview have a free tier?

Yes, ModelsLab offers a free tier that lets you try Google: Gemini 3.1 Pro Preview and other AI models. Sign up to get free API credits and start building immediately.

---

*This markdown version is optimized for AI agents and LLMs.*

**Links:**
- [Website](https://modelslab.com)
- [API Documentation](https://docs.modelslab.com)
- [Blog](https://modelslab.com/blog)

---
*Generated by ModelsLab - 2026-04-17*