Merge Landing Page

Gemini 3 Pro Preview:
Everything you need to know about the model

Gemini 3 Pro Preview is a Google model available through Merge Gateway via Google. Use it with Gateway routing policies, spend controls, request logs, and a 1,048,576 token context window. It supports streaming, structured outputs, tool calling, vision through at least one Gateway vendor route.

Gemini 3 Pro Preview pricing

| Vendor | Input / 1M tokens | Output / 1M tokens | Zero data retention | | --- | ---: | ---: | --- | | Google | $2.00 | $12.00 | No |

Test Gemini 3 Pro Preview with Merge Gateway’s Simulator

Gemini 3 Pro Preview

Model

System prompt

Synced

User message

Synced

Response

Run simulation to see response

Cost

—

Tokens

—

Latency

—

Ready to try it out?

Start routing requests to hundreds of large language models in your product within minutes.

Start building for free

Get a demo

Route requests to Gemini 3 Pro Preview with Merge Gateway

Merge Gateway is a unified LLM API that lets your product route requests to Gemini 3 Pro Preview and every other major model through a single endpoint. You get built-in fallback routing, per-request cost tracking, zero data retention support, and observability without changing your application architecture.

To get started in seconds, add our Gateway Implementation skill to your project, or pick your preferred SDK below. Check out our other quick start skills here.

Install the Merge Gateway SDK

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Make your first API call

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Try a diffrent model

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Install the Merge Gateway SDK

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Make your first API call

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Try a diffrent model

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Install the Merge Gateway SDK

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Make your first API call

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Try a diffrent model

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Install the Merge Gateway SDK

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Make your first API call

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Try a diffrent model

Python

1{
2  "mcpServers": {
3    "agent-handler": {
4      "url": "https://ah-api-develop.merge.dev/api/v1/tool-packs/{TOOL_PACK_ID}/registered-users/{REGISTERED_USER_ID}/mcp",
5      "headers": {
6        "Authorization": "Bearer yMt*****"
7      }
8    }
9  }
10}
11

Explore other models available in Merge Gateway

Gpt 5 Search Api 2025 10 14

Grok 3

Grok 3 Mini

Grok 4 0709

Grok 4 1 Fast Non Reasoning

Grok 4 1 Fast Reasoning

Grok 4.20

Grok 4.3

Grok 4 Fast Non Reasoning

Grok 4 Fast Reasoning

Grok Code Fast 1

Jamba 1.5 Large

Jamba 1.5 Mini

Kimi K2 0711 Preview

Kimi K2 0905 Preview

Kimi K2.5

Kimi K2.6

Kimi K2 Thinking

Kimi K2 Thinking Turbo

Kimi K2 Turbo Preview

Llama 3.1 70B

Llama 3.1 8B

Llama 3.2 11B

Gemini 3 Pro Preview FAQ

In case you have any more questions on using Gemini 3 Pro Preview, we’ve addressed several below.

Heading

What provider owns Gemini 3 Pro Preview?

Gemini 3 Pro Preview is a Google model.

Which vendors can run Gemini 3 Pro Preview?

Google is the default listed vendor, and other active vendors may also be available.

What context window does Gemini 3 Pro Preview support?

Gemini 3 Pro Preview supports 1,048,576 tokens on the primary listed vendor route.

What capabilities does Gemini 3 Pro Preview support?

Gateway currently lists streaming, structured outputs, tool calling, vision support for Gemini 3 Pro Preview across its available vendor routes.

Try Gemini 3 Pro Preview through Merge Gateway

Route, observe, and control AI requests across providers from one API.

Start building for free

Get a demo