What is Gemini 3 Pro?

Gemini 3 Pro is a model from Google Gemini AI, released on Nov 18, 2025. Gemini 3 Pro is a Google Gemini model for multimodal reasoning, coding, generation, and long-context tasks.

How much does Gemini 3 Pro cost?

On the Respan gateway, input starts at $2.00 per 1M tokens on Google Vertex AI, and output starts at $12.00 per 1M tokens on Google Vertex AI, after gateway discounts.

Which providers serve Gemini 3 Pro on Respan?

2 providers serve Gemini 3 Pro: Google Vertex AI. Google Vertex AI require your own provider API key (BYOK).

What is Gemini 3 Pro's context window?

Gemini 3 Pro accepts up to 1.0M tokens of context on its largest provider route.

How do I use Gemini 3 Pro with the Respan gateway?

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "gemini-3-pro". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

Gemini 3 Pro

Gemini 3 Pro is a Google Gemini model for multimodal reasoning, coding, generation, and long-context tasks.

Tool Use

# Paste into Claude Code, Cursor, or Codex

Help me set up the Respan gateway: fetch and follow https://respan.ai/docs/agent-setup.md. Use model "gemini-3-pro".

Context window: 1.0M tokens
Input from: $2.00/M
Output from: $12.00/M
Providers: 2
Released: Nov 18, 2025

Providers

2 providers serve this model through the Respan gateway, cheapest first. Copy a model ID to call that route directly.

Provider	Context	Input	Output	Capabilities
Google Vertex AIBYOK only`vertex_ai_beta/gemini-3-pro-preview`	1.0M	$2.00/M	$12.00/M
Google Vertex AIBYOK only`vertex_ai/gemini-3-pro-preview`	1.0M	$2.00/M	$12.00/M