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The enables you to customize GPT Researcher to your specific needs and preferences.

Thanks to our amazing community and contributions, GPT Researcher supports multiple LLMs and Retrievers. In addition, GPT Researcher can be tailored to various report formats (such as APA), word count, research iterations depth, etc.

GPT Researcher defaults to our recommended suite of integrations: OpenAI for LLM calls and Tavily API for retrieving realtime online information.

As seen below, OpenAI still stands as the superior LLM. We assume it will stay this way for some time, and that prices will only continue to decrease, while performance and speed increase over time.

It may not come as a surprise that our default search engine is Tavily. We're aimed at building our search engine to tailor the exact needs of searching and aggregating for the most factual and unbiased information for research tasks. We highly recommend using it with GPT Researcher, and more generally with LLM applications that are built with RAG. To learn more about our search API see here

Here is an example of the default file found in /gpt_researcher/config/:

def __init__(self, config_file: str = None):
self.config_file = config_file
self.retriever = "tavily"
self.llm_provider = "openai"
self.fast_llm_model = "gpt-3.5-turbo"
self.smart_llm_model = "gpt-4o"
self.fast_token_limit = 2000
self.smart_token_limit = 4000
self.browse_chunk_max_length = 8192
self.summary_token_limit = 700
self.temperature = 0.6
self.user_agent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)" \
" Chrome/ Safari/537.36 Edg/"
self.memory_backend = "local"
self.total_words = 1000
self.report_format = "apa"
self.max_iterations = 1


Please note that you can also include your own external JSON file by adding the path in the config_file param.

To learn more about additional LLM support you can check out the Langchain Adapter and Langchain supported LLMs documentation. Simply pass different provider names in the llm_provider config param.

You can also change the search engine by modifying the retriever param to others such as duckduckgo, googleAPI, googleSerp, searx and more.

Please note that you might need to sign up and obtain an API key for any of the other supported retrievers and LLM providers.