> ## AI Agent Context
> Get the complete documentation index at: https://aistudio.google.com/llms.txt
> Use this file to discover all available pages.
> For the full documentation in a single file, fetch: https://aistudio.google.com/llms-full.txt

# Deep Research Pro preview

{% callout type="warning" %}
  `deep-research-pro-preview-12-2025` is [deprecated](/docs/deprecations#managed-agents) and will be shut down on October 23, 2026. Migrate to [`deep-research-preview-04-2026`](/docs/models/deep-research-preview-04-2026) or [`deep-research-max-preview-04-2026`](/docs/models/deep-research-max-preview-04-2026).

{% /callout %}

A powerful agentic researcher designed for autonomous, multi-step investigations
that synthesize complex information into comprehensive, cited reports. Powered
by Gemini 3.1 Pro, this model is optimized for long-running tasks and
accuracy-critical analysis across hundreds of public web sources and private
workspace data like Gmail and Drive.

## Documentation  {% id="documentation" %}

Visit the [Deep Research](/docs/deep-research) page for full coverage
of features and capabilities.

## deep-research-pro-preview-12-2025  {% id="deep-research-pro-preview-12-2025" %}

{% table variant="model" %}
  * Property
  * Description

  ---

  *     {% section class="model-property" %}
  {% icon name="id_card" /%}Agent code

    {% /section %}

  * **Interactions API**
    `deep-research-pro-preview-12-2025`

  ---

  *     {% section class="model-property" %}
  {% icon name="save" /%}Supported data types

    {% /section %}

  * **Input**
    Text, Image, PDF, Audio, Video
    **Output**
    Text (Cited Reports)

  ---

  *     {% section class="model-property" %}
  {% icon name="token_auto" /%}Token limits[[*]](/docs/tokens)

    {% /section %}

  * **Input context window**
    1,048,576
    **Output token limit**
    65,536

  ---

  *     {% section class="model-property" %}
  {% icon name="123" /%}Versions

    {% /section %}

  * Read the [model version patterns](/docs/models#model-versions) for more details.
    Preview: `deep-research-pro-preview-12-2025`

  ---

  *     {% section class="model-property" %}
  {% icon name="calendar_month" /%}Latest update

    {% /section %}

  * December 2025
{% /table %}