[Question] What proportion of total EA funding comes from Open Philanthropy, GiveWell, and other big EA funders?

Tyler Maule’s helpful spreadsheet collates the historical public grants data from EA-aligned grantmakers. However, some EA charities also presumably get some funding from individual donors and not-specifically-EA-aligned foundations. Is there a sense of what proportion of total EA funding comes from Open Philanthropy, GiveWell, and other specifically-EA foundations? (as opposed to non-EA foundations and individual donors)

No answers.