Alexander Berger
@albrgr.bsky.social
CEO of Coefficient Giving
Excited to share: the Development Innovation Ventures (DIV) Fund officially launched this week as an independent nonprofit.
Coefficient Giving is proud to be an anchor funder. 🧵
Coefficient Giving is proud to be an anchor funder. 🧵
February 7, 2026 at 5:00 PM
Excited to share: the Development Innovation Ventures (DIV) Fund officially launched this week as an independent nonprofit.
Coefficient Giving is proud to be an anchor funder. 🧵
Coefficient Giving is proud to be an anchor funder. 🧵
Reposted by Alexander Berger
Research Obsession Day 1: What do we know about the impact of creators? And what does it have to do with Elon Musk?
Featuring this incredible research by @eunjikim.bsky.social, Nate Lubin & others: arxiv.org/pdf/2512.15401
Featuring this incredible research by @eunjikim.bsky.social, Nate Lubin & others: arxiv.org/pdf/2512.15401
February 5, 2026 at 5:37 PM
Research Obsession Day 1: What do we know about the impact of creators? And what does it have to do with Elon Musk?
Featuring this incredible research by @eunjikim.bsky.social, Nate Lubin & others: arxiv.org/pdf/2512.15401
Featuring this incredible research by @eunjikim.bsky.social, Nate Lubin & others: arxiv.org/pdf/2512.15401
I donated a kidney a few years before German, in December, and now every year around the holidays I get an email from my recipient about what's going on in her life. Not at all why I donated but that email is now one of the things I most look forward to about the holidays every year.
Great reflection in the NYT from German Lopez on donating his kidney, including this truly incredible line. (And he's yet another person inspired by @dylanmatt.bsky.social!)
www.nytimes.com/2026/02/02/...
www.nytimes.com/2026/02/02/...
February 3, 2026 at 4:53 PM
I donated a kidney a few years before German, in December, and now every year around the holidays I get an email from my recipient about what's going on in her life. Not at all why I donated but that email is now one of the things I most look forward to about the holidays every year.
Just me or did @devex.com mash me up with Beto here? www.devex.com/news/devex-...
February 3, 2026 at 12:42 AM
Just me or did @devex.com mash me up with Beto here? www.devex.com/news/devex-...
Great reflection in the NYT from German Lopez on donating his kidney, including this truly incredible line. (And he's yet another person inspired by @dylanmatt.bsky.social!)
www.nytimes.com/2026/02/02/...
www.nytimes.com/2026/02/02/...
February 2, 2026 at 10:43 PM
Great reflection in the NYT from German Lopez on donating his kidney, including this truly incredible line. (And he's yet another person inspired by @dylanmatt.bsky.social!)
www.nytimes.com/2026/02/02/...
www.nytimes.com/2026/02/02/...
Cool to see my former colleague Ajeya Cotra in @nytopinion.nytimes.com today. Here's her advice for high schoolers preparing for the future. Tough to operationalize!
www.nytimes.com/interactive...
www.nytimes.com/interactive...
February 2, 2026 at 8:52 PM
Cool to see my former colleague Ajeya Cotra in @nytopinion.nytimes.com today. Here's her advice for high schoolers preparing for the future. Tough to operationalize!
www.nytimes.com/interactive...
www.nytimes.com/interactive...
Last year, our science team stepped in with emergency funding to save TB vaccine research that was about to be shut down due to NIH cuts. Cool to see this new paper from some of those researchers randomly cross my desk (and cite my colleague Abie Rohrig)!
January 28, 2026 at 1:44 AM
Last year, our science team stepped in with emergency funding to save TB vaccine research that was about to be shut down due to NIH cuts. Cool to see this new paper from some of those researchers randomly cross my desk (and cite my colleague Abie Rohrig)!
My talk at the 2025 Progress Conference is out!
I talk about CG's support of science & tech progress, YIMBYism & SB 79 as case studies, why you should care about worst-case AI risks if you're pro-progress, and the relationship between progress and safety.
www.youtube.com/watch?v=XaO...
I talk about CG's support of science & tech progress, YIMBYism & SB 79 as case studies, why you should care about worst-case AI risks if you're pro-progress, and the relationship between progress and safety.
www.youtube.com/watch?v=XaO...
The role of philanthropy in promoting progress (and safety)
In this talk, Alexander Berger, CEO of Open Philanthropy, discusses a number of examples of how philanthropic funding can help accelerate progress, especiall...
www.youtube.com
January 19, 2026 at 9:44 PM
My talk at the 2025 Progress Conference is out!
I talk about CG's support of science & tech progress, YIMBYism & SB 79 as case studies, why you should care about worst-case AI risks if you're pro-progress, and the relationship between progress and safety.
www.youtube.com/watch?v=XaO...
I talk about CG's support of science & tech progress, YIMBYism & SB 79 as case studies, why you should care about worst-case AI risks if you're pro-progress, and the relationship between progress and safety.
www.youtube.com/watch?v=XaO...
"When I made my 2029 prediction this is more-or-less the quality of result I had in mind."
simonwillison.net/2026/Jan/19...
simonwillison.net/2026/Jan/19...
Scaling long-running autonomous coding
Wilson Lin at Cursor has been doing some experiments to see how far you can push a large fleet of "autonomous" coding agents: This post describes what we've learned from …
simonwillison.net
January 19, 2026 at 9:44 PM
"When I made my 2029 prediction this is more-or-less the quality of result I had in mind."
simonwillison.net/2026/Jan/19...
simonwillison.net/2026/Jan/19...
Interesting paper from a grantee on productivity gains from LLM usage arxiv.org/pdf/2512.21316
January 17, 2026 at 9:48 PM
Interesting paper from a grantee on productivity gains from LLM usage arxiv.org/pdf/2512.21316
Cool annual impact report from our grantee @epochai.bsky.social, including many great testimonials.
High-quality unbiased data on compute & model trends is really important!
epoch.ai/blog/epoch-...
High-quality unbiased data on compute & model trends is really important!
epoch.ai/blog/epoch-...
January 17, 2026 at 9:46 PM
Cool annual impact report from our grantee @epochai.bsky.social, including many great testimonials.
High-quality unbiased data on compute & model trends is really important!
epoch.ai/blog/epoch-...
High-quality unbiased data on compute & model trends is really important!
epoch.ai/blog/epoch-...
Really enjoyed this post from Beren Millidge thinking through what alignment looks like in singleton vs. multipolar AGI scenarios www.beren.io/2026-01-07-...
AI Monotheism vs AI Polytheism
Epistemic note: This is the beginning of a planned series of posts trying to think about what a highly multi-polar post-AGI world would look like and to what extent humanity or human values could survive in such a world depending on our degree of alignment success. This is all highly...
www.beren.io
January 14, 2026 at 7:23 PM
Really enjoyed this post from Beren Millidge thinking through what alignment looks like in singleton vs. multipolar AGI scenarios www.beren.io/2026-01-07-...
Reposted by Alexander Berger
Blocking new housing doesn't stop rich people from moving in. Instead, it means unleashing them on the existing housing stock.
In SF, increased demand from the tech boom was not met with new supply, so landlords withdrew their rentals to sell to tech workers.
1/
In SF, increased demand from the tech boom was not met with new supply, so landlords withdrew their rentals to sell to tech workers.
1/
January 12, 2026 at 9:52 PM
Blocking new housing doesn't stop rich people from moving in. Instead, it means unleashing them on the existing housing stock.
In SF, increased demand from the tech boom was not met with new supply, so landlords withdrew their rentals to sell to tech workers.
1/
In SF, increased demand from the tech boom was not met with new supply, so landlords withdrew their rentals to sell to tech workers.
1/
Really cool article about @sholtodavid.bsky.social's successful work finding fraudulent data in cancer research
www.thetimes.com/uk/science/...
www.thetimes.com/uk/science/...
January 13, 2026 at 4:00 PM
Really cool article about @sholtodavid.bsky.social's successful work finding fraudulent data in cancer research
www.thetimes.com/uk/science/...
www.thetimes.com/uk/science/...
A reminder that we're hiring for several really important roles at Coefficient Giving! Learn more here: coefficientgiving.org/about-us/ca...
January 9, 2026 at 10:42 PM
A reminder that we're hiring for several really important roles at Coefficient Giving! Learn more here: coefficientgiving.org/about-us/ca...
"Models keep getting more impressive at the rate the short timelines people predict, but more useful at the rate the long timelines people predict."
This is a great essay:
www.dwarkesh.com/p/thoughts-...
This is a great essay:
www.dwarkesh.com/p/thoughts-...
January 7, 2026 at 9:10 PM
"Models keep getting more impressive at the rate the short timelines people predict, but more useful at the rate the long timelines people predict."
This is a great essay:
www.dwarkesh.com/p/thoughts-...
This is a great essay:
www.dwarkesh.com/p/thoughts-...
Reposted by Alexander Berger
Despite unprecedented cuts to global aid, there were still bright spots for global health in 2025, including progress on reducing lead exposure.
@rachelbonnifield.bsky.social discusses the decline in Bangladeshi children's blood lead levels in @npr.org:
https://go.cgdev.org/3N2J6Cb
@rachelbonnifield.bsky.social discusses the decline in Bangladeshi children's blood lead levels in @npr.org:
https://go.cgdev.org/3N2J6Cb
In a year of steep challenges, there were still shining moments in global health
The Trump administration's deep cuts in U.S. foreign health aid had a devastating impact. Yet there were achievements of note in spite of it all.
go.cgdev.org
January 5, 2026 at 7:13 PM
Despite unprecedented cuts to global aid, there were still bright spots for global health in 2025, including progress on reducing lead exposure.
@rachelbonnifield.bsky.social discusses the decline in Bangladeshi children's blood lead levels in @npr.org:
https://go.cgdev.org/3N2J6Cb
@rachelbonnifield.bsky.social discusses the decline in Bangladeshi children's blood lead levels in @npr.org:
https://go.cgdev.org/3N2J6Cb
Reposted by Alexander Berger
AEJ-Macro: Fed move to stabilize "shortfalls" rather than "deviations" of employment from max raises average inflation and nominal policy rates by 90 basis points, reduces the likelihood of a binding zero lower bound, implies a steeper & nonlinear Phillips curve. www.aeaweb.org/articles?id=...
From Deviations to Shortfalls: The Effects of the FOMC's New Employment Objective
(January 2026) - We analyze the effects of a monetary policy that stabilizes "shortfalls" rather than "deviations" of employment from its maximum level. A shortfalls-stabilization rule leads to expect...
www.aeaweb.org
December 30, 2025 at 7:50 PM
AEJ-Macro: Fed move to stabilize "shortfalls" rather than "deviations" of employment from max raises average inflation and nominal policy rates by 90 basis points, reduces the likelihood of a binding zero lower bound, implies a steeper & nonlinear Phillips curve. www.aeaweb.org/articles?id=...
I wanted to give an end-of-year shout out to @ourworldindata.org, who we recently gave a three-year, $3m general support grant (short 🧵)
December 19, 2025 at 6:15 PM
I wanted to give an end-of-year shout out to @ourworldindata.org, who we recently gave a three-year, $3m general support grant (short 🧵)
Our staff's 2025 recommendations for individual donors, fresh off the press: coefficientgiving.org/research/su...
Suggestions for Individual Donors from Coefficient Giving Staff – 2025 | Coefficient Giving
The 2025 edition of our annual tradition: a list of giving opportunities suggested by Coefficient Giving program staff.
coefficientgiving.org
December 19, 2025 at 5:01 PM
Our staff's 2025 recommendations for individual donors, fresh off the press: coefficientgiving.org/research/su...
Some news: we're committing $175m to @GiveWell in 2026, growing our >$1B committed to date.
Based on GiveWell’s estimates, we think this funding has saved >100,000 lives so far. 🧵
coefficientgiving.org/research/al...
Based on GiveWell’s estimates, we think this funding has saved >100,000 lives so far. 🧵
coefficientgiving.org/research/al...
Allocating $175M to GiveWell’s Recommendations for 2026 | Coefficient Giving
This post lays out why we've chosen to renew our support for GiveWell’s recommendations; we think it's an outstanding resource and we’re proud to support the organizations it has identified.
coefficientgiving.org
December 18, 2025 at 7:57 PM
Some news: we're committing $175m to @GiveWell in 2026, growing our >$1B committed to date.
Based on GiveWell’s estimates, we think this funding has saved >100,000 lives so far. 🧵
coefficientgiving.org/research/al...
Based on GiveWell’s estimates, we think this funding has saved >100,000 lives so far. 🧵
coefficientgiving.org/research/al...
This @ezrakleinbot.bsky.social episode is great! www.nytimes.com/2025/12/16/...
Opinion | The Simplest Way to Save Lives With Your Money
Elie Hassenfeld, the chief executive of the nonprofit GiveWell, makes the case for a more rigorous, transparent and accountable approach to charitable giving.
www.nytimes.com
December 17, 2025 at 2:00 PM
This @ezrakleinbot.bsky.social episode is great! www.nytimes.com/2025/12/16/...
Reposted by Alexander Berger
Today’s episode of The Ezra Klein Show.
Elie Hassenfeld, the chief executive of the nonprofit GiveWell, makes the case for a more rigorous, transparent and accountable approach to charitable giving.
open.spotify.com/episode/1Ff6...
www.nytimes.com/2025/12/16/o...
Elie Hassenfeld, the chief executive of the nonprofit GiveWell, makes the case for a more rigorous, transparent and accountable approach to charitable giving.
open.spotify.com/episode/1Ff6...
www.nytimes.com/2025/12/16/o...
Opinion | What Does It Mean to Give Well?
www.nytimes.com
December 16, 2025 at 1:46 PM
Today’s episode of The Ezra Klein Show.
Elie Hassenfeld, the chief executive of the nonprofit GiveWell, makes the case for a more rigorous, transparent and accountable approach to charitable giving.
open.spotify.com/episode/1Ff6...
www.nytimes.com/2025/12/16/o...
Elie Hassenfeld, the chief executive of the nonprofit GiveWell, makes the case for a more rigorous, transparent and accountable approach to charitable giving.
open.spotify.com/episode/1Ff6...
www.nytimes.com/2025/12/16/o...
TIL: there are now more Christians living in Africa than in Europe.
www.pewresearch.org/short-reads...
www.pewresearch.org/short-reads...
December 15, 2025 at 11:03 PM
TIL: there are now more Christians living in Africa than in Europe.
www.pewresearch.org/short-reads...
www.pewresearch.org/short-reads...
Reposted by Alexander Berger
Every AI-bubble debate is the same 12 facts, studies, and arguments quoted back and forth, over and over.
So Tim Lee at @understandingai.skystack.xyz and I teamed up to publish a 4,000 word deep-dive analysis of all 12.
www.derekthompson.org/p/how-to-sou...
So Tim Lee at @understandingai.skystack.xyz and I teamed up to publish a 4,000 word deep-dive analysis of all 12.
www.derekthompson.org/p/how-to-sou...
How to Sound Like an Expert in Any AI Bubble Debate
There are 12 statistics, factoids, and studies that dominate every discussion about whether artificial intelligence is a bubble. Here's a deep-dive into all 12 arguments
www.derekthompson.org
November 25, 2025 at 3:03 PM
Every AI-bubble debate is the same 12 facts, studies, and arguments quoted back and forth, over and over.
So Tim Lee at @understandingai.skystack.xyz and I teamed up to publish a 4,000 word deep-dive analysis of all 12.
www.derekthompson.org/p/how-to-sou...
So Tim Lee at @understandingai.skystack.xyz and I teamed up to publish a 4,000 word deep-dive analysis of all 12.
www.derekthompson.org/p/how-to-sou...