In 2023[1] GiveWell raised $355 million - $100 million from Open Philanthropy, and $255 million from other donors.
In their post on 10th April 2023, GiveWell forecast the amount they expected to raise in 2023, albeit with wide confidence intervals, and stated that their 10th percentile estimate for total funds raised was $416 million, and 10th percentile estimate for funds raised outside of Open Philanthropy was $260 million.
GiveWell raised less than its 10th percentile forecast in 2023
In 2023[1] GiveWell raised $355 million - $100 million from Open Philanthropy, and $255 million from other donors.
In their post on 10th April 2023, GiveWell forecast the amount they expected to raise in 2023, albeit with wide confidence intervals, and stated that their 10th percentile estimate for total funds raised was $416 million, and 10th percentile estimate for funds raised outside of Open Philanthropy was $260 million.
Regarding Open Philanthropy, the April 2023 post states that they “tentatively plans to give $250 million in 2023”, however Open Philanthropy gave a grant of $300 million to cover 2023-2025, to be split however GiveWell saw fit, and it used $100 million of that grant in 2023.
However for other donors I’m not sure what caused the missed estimate
Credit to ‘Arnold’ on GiveWell’s December 2024 Open Thread for bringing this to my attention
1st February 2023 − 31st January 2024