Google recently announced an upgrade to its automated research agent capabilities, launching two new versions—Deep Research and Deep Research Max—which have been made available in preview via the Gemini API. First released last December as Gemini Deep Research, this update marks the evolution of the capability from a summary tool into more complex enterprise-grade research infrastructure. The core of this update lies in integrating the latest model, Gemini 3.1 Pro, enabling Deep Research to execute intricate multi-step research tasks. Developers can trigger deep retrieval processes covering both open web sources and private data through a single API call, generating analytical reports complete with cited references, applicable across scenarios such as finance, life sciences, and market research. In terms of product positioning, Deep Research emphasizes speed and cost efficiency, making it ideal for interactive applications, while Deep Research Max prioritizes comprehensiveness and high-quality reasoning by employing extended computational cycles involving multiple rounds of search and analysis, suiting offline or batch research tasks like automatic due diligence report generation. Technologically, the new versions support integration of proprietary corporate data and specialized external data sources via the Model Context Protocol (MCP) and can unify file systems, databases, and remote tools to enable cross-environment unified retrieval. Additionally, the system now natively supports chart and infographic generation, transforming complex datasets into visualized reporting content. According to Google, Deep Research Max demonstrates significantly improved performance on benchmarks related to retrieval and reasoning, effectively synthesizing multi-source information, weighing conflicting evidence, and producing deeper, actionable analytical outcomes in real-world deployments. The capability has already entered collaborative testing phases with institutions including FactSet, S&P Global, and PitchBook, further validating its value within professional domains.