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1<br />23A powerful agentic researcher designed for autonomous, multi-step investigations4that synthesize complex information into comprehensive, cited reports. Powered5by Gemini 3.1 Pro, this model is optimized for long-running tasks and6accuracy-critical analysis across hundreds of public web sources and private7workspace data like Gmail and Drive.89## Documentation1011Visit the [Deep Research](https://ai.google.dev/gemini-api/docs/deep-research) page for full coverage12of features and capabilities.1314## deep-research-pro-preview-12-20251516| Property | Description |17|---|---|18| Agent code | **Interactions API** `deep-research-pro-preview-12-2025` |19| Supported data types | **Input** Text, Image, PDF, Audio, Video **Output** Text (Cited Reports) |20| Token limits^[\[\*\]](https://ai.google.dev/gemini-api/docs/tokens)^ | **Input context window** 1,048,576 **Output token limit** 65,536 |21| Versions | Read the [model version patterns](https://ai.google.dev/gemini-api/docs/models/gemini#model-versions) for more details. - Preview: `deep-research-pro-preview-12-2025` |22| Latest update | December 2025 |