SQL Benchmarking: comparing data pipeline tools` This benchmark compared popular data pipeline tools - Fivetran, Stitch, Airbyte, and dlt (data load tool) - to determine their performance in terms of speed, cost, ease of use, and customizability. The test used the industry-standard TPC-H dataset and evaluated each tool's execution time, cost, and performance tuning capabilities. Key findings included: dlt using ConnectorX was the fastest, with significant cost savings compared to other tools; Airbyte was the slowest; parallelization improved performance for some tools but had diminishing returns due to network and database limitations; and Python performance in EL (e.g., Fivetran) is not a bottleneck. The study highlights the importance of considering these factors when choosing a data pipeline tool.