# open_deep_research | LangChain | Knowledge Base | Instagit

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Repository: https://github.com/langchain-ai/open_deep_research

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## Articles

### [What Does `max_researcher_iterations` Control in the Open Deep Research Supervisor Loop?](/langchain-ai/open_deep_research/what-does-max-researcher-iterations-control-in-the-supervisor-loop)

Understand max_researcher_iterations in Open Deep Research. Learn how this parameter limits supervisor loop tool calls and forces termination for efficient research management.

- Tags: deep-dive
- Published: 2026-07-23

### [How to Migrate from Legacy graph.py or multi_agent.py in Open Deep Research](/langchain-ai/open_deep_research/how-to-migrate-from-legacy-graph-py-or-multi-agent-py-implementations)

Easily migrate from legacy graph.py or multi_agent.py in Open Deep Research. Learn how to update imports, refactor state, and centralize configuration for a smoother transition.

- Tags: migration-guide
- Published: 2026-07-23

### [How to Customize Research Brief Generation from User Messages in Open Deep Research](/langchain-ai/open_deep_research/how-to-customize-the-research-brief-generation-from-user-messages)

Customize research brief generation in Open Deep Research by modifying prompts, swapping them at runtime, adjusting model settings, or post-processing output. Learn how to tailor brief creation.

- Tags: how-to-guide
- Published: 2026-07-23

### [How Token Limit Exceeded Handling Works in Final Report Generation](/langchain-ai/open_deep_research/how-does-token-limit-exceeded-handling-work-in-final-report-generation)

Learn how the open deep research framework handles token limit exceeded errors by automatically reducing max_tokens for seamless final report generation across top AI providers.

- Tags: deep-dive
- Published: 2026-07-23

### [How the clarify_with_user Phase Works in Open Deep Research](/langchain-ai/open_deep_research/how-does-the-clarify-with-user-phase-work-and-when-is-it-triggered)

Understand the clarify_with_user phase in Open Deep Research. Learn how it ensures sufficient context or asks clarifying questions before starting research, streamlining your workflow.

- Tags: deep-dive
- Published: 2026-07-23