FEATURE gpt researcher template (#13062)

Co-authored-by: Erick Friis <erick@langchain.dev>

templates/research-assistant/research_assistant/writer.py

@@ -0,0 +1,31 @@
+from langchain.chat_models import ChatOpenAI
+from langchain.prompts import ChatPromptTemplate
+from langchain.schema.output_parser import StrOutputParser
+
+REPORT_TEMPLATE = """Information: 
+--------
+{research_summary}
+--------
+
+Using the above information, answer the following question or topic: "{question}" in a detailed report -- \
+The report should focus on the answer to the question, should be well structured, informative, \
+in depth, with facts and numbers if available and a minimum of 1,200 words.
+
+You should strive to write the report as long as you can using all relevant and necessary information provided.
+You must write the report with markdown syntax.
+You MUST determine your own concrete and valid opinion based on the given information. Do NOT deter to general and meaningless conclusions.
+Write all used source urls at the end of the report, and make sure to not add duplicated sources, but only one reference for each.
+You must write the report in apa format.
+Please do your best, this is very important to my career."""  # noqa: E501
+
+model = ChatOpenAI(temperature=0)
+prompt = ChatPromptTemplate.from_messages(
+    [
+        (
+            "system",
+            "You are an AI critical thinker research assistant. Your sole purpose is to write well written, critically acclaimed, objective and structured reports on given text.",  # noqa: E501
+        ),
+        ("user", REPORT_TEMPLATE),
+    ]
+)
+chain = prompt | model | StrOutputParser()