Joined May 2009
190 Photos and videos
Pinned Tweet
Started to curate a table of small quantum Tanner codes aleverrier.github.io/qtanner…

1
3
27
3,756
Anthony Leverrier retweeted
Among the funnier parts of the govt overreach is that Amanda Askell, Andrej Karpathy and prob Chris Olah (?) can't access Mythos anymore because they're not US citizens.
2
6
79
37,176
Interesting take
For anyone wondering what this means: - Anthropic (and potentially future OpenAI, Google, xAI) models that cost billions to develop will make 0 revenue outside the US - a big double digit percentage of Anthropic (and potentially OpenAI, Google, xAI) workforce can no longer work there, because they are foreigners and are not allowed to use those models So Trump just made frontier model development effectively unprofitable and tremendously slowed down Anthropic (and potentially others in the future) He's handing China the win on a gold platter. *potentially: if the same restrictions are imposed on other frontier labs and models
1
3
940
Anthony Leverrier retweeted
For anyone wondering what this means: - Anthropic (and potentially future OpenAI, Google, xAI) models that cost billions to develop will make 0 revenue outside the US - a big double digit percentage of Anthropic (and potentially OpenAI, Google, xAI) workforce can no longer work there, because they are foreigners and are not allowed to use those models So Trump just made frontier model development effectively unprofitable and tremendously slowed down Anthropic (and potentially others in the future) He's handing China the win on a gold platter. *potentially: if the same restrictions are imposed on other frontier labs and models
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: anthropic.com/news/fable-myt…
519
944
11,742
1,421,508
And so it begins
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: anthropic.com/news/fable-myt…
5
798
You heard it here first.
OpenAI is preparing a new AI model, per The Information
4
925
enjoy this while it lasts
Subscription plans are massively subsidized. And by massively, I mean absurdly: Claude Max 20x: $200/month, with usage reportedly worth around $8,000 ChatGPT Pro 20x: $200/month, with usage reportedly worth around $14,000
2
655
Second panel of #QEC starting now. Looking forward to a lot of controversial takes!
3
18
1,229
This is true !
Next QEC come to Paris! #QEC27
1
20
1,469
it seems that big conjectures can still be refuted without using AI! "The dream XOR lemma is false", by Emanuelle Viola
1
1
13
3,065
New teaser: threshold plot for rotated surface code with depolarizing noise (code capacity). Black line is ML decoding. #QEC2026
Preparing my talk at #QEC2026 next week. Small teaser:
2
20
1,936
Preparing my talk at #QEC2026 next week. Small teaser:
1
1
35
3,895
any hardware quantum company at YC?
Sam Altman deserves credit for YC's turn toward hard tech. When he became CEO in 2014 he went out and recruited companies doing stuff like airliners and fusion, and hard tech startups have been some of the best in every batch since.
1
8
2,455
Anthony Leverrier retweeted
Blog post: "The French have the Quantum Circuits" algassert.com/post/2602 André Schrottenloher just published a preprint showing how to construct quantum ECDLP circuits with costs similar to the ones in our zero knowledge proofs.

2
37
123
11,392
Anthony Leverrier retweeted
Replying to @tonylfeng
I like this idea but it’s not clear to me the journal system can (or should) survive the oncoming glut of mathematical text.
2
2
57
4,959
The analogy between choosing a research program and finding a startup idea is quite striking.
Finding a startup idea is usually a mix of breadth-first and depth-first search. You look at a bunch of branches, then force yourself to go deep on the one that seems most promising. Repeat until something pulls you in. Tokenmaxxing helps with the breadth-first part. But the hard part is still building enough conviction to go depth-first for a while.
3
928
Resets don't change anything if you're using your tokens regularly through the week. They only matter if you used all your tokens before the next planned reset.
May 31
Five million users would agree. Resetting the limits tomorrow morning to celebrate. Time to go /fast
2
645
ran out of token for codex-5.5 and went back to codex-5.3-spark. OMG, how could this ever be useful?
1
5
897