https://www.clay.com/university/lesson/import-csv-clay-101
Daniel James if you're an agency, you can even set up unique API keys per-client to measure costs at that level, which is what we do.
Import the data if you haven't yet
Add a column to the table with the "Use AI" function
Either use the "Generate" function to create your enrichment or set it up in the Configure tab (If you're not familiar, use Generate and it'll get you really close if not perfect)
Run it for 10 test rows & verify the results
Adjust as needed, then run for remaining rows