Gemini 3 Pro API
Gemini 3 Pro is Google's flagship multimodal reasoning model built for long-context chat, tool calling, and structured outputs. It accepts text and media inputs and returns high-quality text responses for production assistants and analytics workflows.
| Params | Value | Official |
|---|---|---|
| Input | $1.4 | $2 |
| Output | $8.4 | $12 |
| per 1M tokens | ||
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Model: gemini-3-pro
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Everything You Need to Know About
Gemini 3 Pro API
Deploy the Gemini 3 Pro API to power multimodal reasoning, structured outputs, and long-context assistants.
What is the Gemini 3 Pro API?
Gemini 3 Pro API is Google's flagship multimodal reasoning model for long-context chat, structured outputs, and tool-aware workflows. It accepts text plus image, video, or audio inputs and returns high-quality text responses designed for production assistants and analytics.
Gemini 3 Pro API Features & Capabilities
Design reliable multimodal experiences with Gemini 3 Pro API.
Gemini 3 Pro API handles long-context conversations and large outputs with stable reasoning
Multimodal input via text, image, video, or audio file parts
ThinkingConfig controls reasoning depth with includeThoughts and thinkingLevel
Structured JSON responses with responseSchema for reliable extraction
Function calling with tools and toolConfig for agent workflows
Streaming responses with auto provider routing for uptime
Gemini 3 Pro API Use Cases
Launch Gemini 3 Pro API workflows that scale across teams.
Multimodal document and visual QA pipelines
Ship multimodal assistants with structured outputs and clear token pricing.
Structured data extraction and classification
Ship multimodal assistants with structured outputs and clear token pricing.
Long-context knowledge assistants with RAG
Ship multimodal assistants with structured outputs and clear token pricing.
Agent workflows with tool calling and retries
Ship multimodal assistants with structured outputs and clear token pricing.
Enterprise translation and localization at scale
Ship multimodal assistants with structured outputs and clear token pricing.
Summaries and insights across large reports
Ship multimodal assistants with structured outputs and clear token pricing.
Gemini 3 Pro API Pricing Snapshot
Value routing starts at $1.4 input / $8.4 output. Official routes are $2 / $12 per 1M tokens.
$1.4
per 1M tokens
$2
per 1M tokens
$8.4
per 1M tokens
$12
per 1M tokens
Value: Cost-optimized routes. Official: Direct API with highest availability.
Gemini 3 Pro API Limitations
Plan for these constraints when deploying Gemini 3 Pro API in production.
responseSchema and tools are mutually exclusive in a single request
Cheap provider ignores temperature/topP/topK/maxOutputTokens parameters
thoughtSignature must be preserved in follow-up messages when present
Streaming returns SSE chunks that clients must assemble