Research: GRAPH_COMPLETION vs INSIGHTS result comparison

[krapfj23]

Summary

Compare Cognee SearchTypes to determine the best default for the search endpoint.

Blocked by

Nothing — this is a starting ticket.

Blocks

• Upgrade default search to GRAPH_COMPLETION #78 (upgrade default search to GRAPH_COMPLETION)

Steps

1. With test documents already ingested, run the same queries using SearchType.INSIGHTS, SearchType.GRAPH_COMPLETION, SearchType.CHUNKS, and SearchType.SUMMARIES
2. Compare: result format, result quality, response time, token usage (GRAPH_COMPLETION uses LLM)
3. Document which SearchType is best for which use case
4. Recommend a default SearchType for the /documents/search endpoint

Acceptance Criteria

• docs/searchtype-comparison.md exists with example queries and results
• At least 4 SearchTypes compared
• Response time and quality documented
• Clear recommendation for default SearchType
• PR body includes Closes #77