* Released new versions of the [Deep Research](/docs/deep-research) agent with
collaborative planning, visualization support, MCP server integration, and
File Search:

* [`deep-research-preview-04-2026`](/docs/models/deep-research-preview-04-2026):
Designed for speed and efficiency, ideal to be streamed back to a client
UI.

* [`deep-research-max-preview-04-2026`](/docs/models/deep-research-max-preview-04-2026):
Maximum comprehensiveness for automated context gathering and synthesis.