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No, it is not possible to create a query engine object without an index in LlamaIndex. The index is a crucial component for the query engine as it is used to power the query engine over the data. The index is created from documents and then used to build the query engine. Here is an example of how to create an index and then use it to build a query engine:
from llama_index.core import VectorStoreIndex
# build index
index = VectorStoreIndex.from_documents(documents)
# build query engine from index
query_engine = index.as_query_engine()
You can find more details in the
LlamaIndex documentation ().
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Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
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