Google

Gemini 3.1 Flash Image Preview

Name: Gemini 3.1 Flash Image Preview
Brand: Google
Price: 0.5 USD
Availability: InStock

Gemini 3.1 Flash Image Preview is a multimodal model by Google with support for image generation, vision, web search, prompt caching, and structured output. It supports a 66K token context window with up to 33K tokens of output. Priced at $0.5 per million input tokens and $3 per million output tokens. Access Gemini 3.1 Flash Image Preview through Inworld Router with OpenAI SDK compatibility, built-in failover, and intelligent routing across providers.

→Web SearchPrompt CachingResponse SchemaVision

Use This Model

Step 1 — Create Router

curl --location 'https://api.inworld.ai/router/v1/routers' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
  "name": "compare-frontier-models",
  "defaultRoute": {
    "route_id": "default",
    "variants": [
      {
        "variant": {
          "variant_id": "google-ai-studio/gemini-3.1-flash-image-preview-a",
          "model_id": "google-ai-studio/gemini-3.1-flash-image-preview"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "google-ai-studio/gemini-2.0-flash-b",
          "model_id": "google-ai-studio/gemini-2.0-flash"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "google-ai-studio/gemini-2.0-flash-001-c",
          "model_id": "google-ai-studio/gemini-2.0-flash-001"
        },
        "weight": 34
      }
    ]
  }
}'

import requests

response = requests.post(
    "https://api.inworld.ai/router/v1/routers",
    headers={
        "Authorization": "Basic <your-api-key>",
        "Content-Type": "application/json",
    },
    json={
        "name": "compare-frontier-models",
        "defaultRoute": {
            "route_id": "default",
            "variants": [
                {
                    "variant": {
                        "variant_id": "google-ai-studio/gemini-3.1-flash-image-preview-a",
                        "model_id": "google-ai-studio/gemini-3.1-flash-image-preview"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "google-ai-studio/gemini-2.0-flash-b",
                        "model_id": "google-ai-studio/gemini-2.0-flash"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "google-ai-studio/gemini-2.0-flash-001-c",
                        "model_id": "google-ai-studio/gemini-2.0-flash-001"
                    },
                    "weight": 34
                }
            ]
        }
    },
)
print(response.json())

const response = await fetch(
  "https://api.inworld.ai/router/v1/routers",
  {
    method: "POST",
    headers: {
      Authorization: "Basic <your-api-key>",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      name: "compare-frontier-models",
      defaultRoute: {
        route_id: "default",
        variants: [
          {
            variant: {
              variant_id: "google-ai-studio/gemini-3.1-flash-image-preview-a",
              model_id: "google-ai-studio/gemini-3.1-flash-image-preview",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "google-ai-studio/gemini-2.0-flash-b",
              model_id: "google-ai-studio/gemini-2.0-flash",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "google-ai-studio/gemini-2.0-flash-001-c",
              model_id: "google-ai-studio/gemini-2.0-flash-001",
            },
            weight: 34,
          },
        ],
      },
    }),
  }
);
const data = await response.json();
console.log(data);

Step 2 — Chat Completion

curl --location 'https://api.inworld.ai/v1/chat/completions' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
  "model": "inworld/compare-frontier-models",
  "messages": [{"role": "user", "content": "Hello!"}]
}'

Gemini 3.1 Flash Image Preview pricing and providers

Access Gemini 3.1 Flash Image Preview through Google AI Studio via Inworld Router or Realtime API.

					Capabilities	Input modalities	Output modalities
Google AI Studio	65.5K	32.8K	$0.50	$3.00	+1

Other Google models available through Inworld

Compare Gemini 3.1 Flash Image Preview with other Google models available through Inworld Router or Realtime API.

					Capabilities
Gemini 2.0 Flash	1M	8.2K	$0.10	$0.40	+2
Gemini 2.0 Flash 001	1M	8.2K	$0.15	$0.60	+2
Gemini 2.0 Flash Lite	1M	8.2K	$0.075	$0.30	+2
Gemini 2.0 Flash Lite 001	1M	8.2K	$0.075	$0.30	+2
Gemini 2.5 Flash	1M	65.5K	$0.30	$2.50	+3
Gemini 2.5 Flash Image	32.8K	32.8K	$0.30	$2.50	+1
Gemini 2.5 Flash Lite	1M	65.5K	$0.10	$0.40	+3
Gemini 2.5 Flash Lite Preview 09 2025	1M	65.5K	$0.10	$0.40	+3
Gemini 2.5 PRO	1M	65.5K	$1.25	$10.00	+3
Gemini 3 Flash Preview	1M	65.5K	$0.50	$3.00	+3
Gemini 3 PRO Image Preview	65.5K	32.8K	$2.00	$12.00	+1
Gemini 3.1 Flash Lite Preview	1M	65.5K	$0.25	$1.50	+3
Gemini 3.1 PRO Preview	1M	65.5K	$2.00	$12.00	+3
Gemini 3.1 PRO Preview Customtools	1M	65.5K	$2.00	$12.00	+3
Gemini Flash Latest	1M	65.5K	$0.30	$2.50	+3
Gemini Flash Lite Latest	1M	65.5K	$0.10	$0.40	+3
Gemini PRO Latest	1M	65.5K	$1.25	$10.00	+3
Gemma 3 12b	131.1K	131.1K	$0.04	$0.13
Gemma 3 27b	131.1K	131.1K	$0.08	$0.16
Gemma 3 4b	131.1K	131.1K	$0.04	$0.08

Start building with Gemini 3.1 Flash Image Preview

Access Gemini 3.1 Flash Image Preview and every other model through Inworld Router or Realtime API. Create your free account and start routing in minutes.

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