jessy ✓

@goodhartproof · sf · joined 16 Feb 2021

learning | writing | interested in verification, ai safety

11 771Followers

1 916Following

2 265Posts total

1.8MViews on collected posts

Últimas publicaciones

jessy ✓@goodhartproof12 Sep

@goodhartproof Feels like the model is becoming the commodity and the harness is the product. The real moat is probably the messy domain context, integrations, and distribution around it. Did the strongest teams have a wedge beyond the workflow itself? 17.9K views · 66 likes · 1 reposts · 7 replies Open on X →

jessy ✓@goodhartproof12 Sep

in the age where capabilities are quickly subsumed by frontier models, one of the most durable problems to be working on today is AI safety you simply cannot trust and let a stochastic model (even though well post-trained) to check and balance an adversarial model and 1.9K views · 8 likes · 1 reposts · 0 replies Open on X →

jessy ✓@goodhartproof11 Sep

@goodhartproof This is 100% what people are doing right now even around us in Paris. Harness, tools, and agent stacks for specific usage. 14.6K views · 45 likes · 0 reposts · 3 replies Open on X →

jessy ✓@goodhartproof11 Sep

@goodhartproof Makes a lot of sense, seems like the frontier models just get good at everything and the three most obvious non-hardware things to do given that fact are 1. Harnesses to plug models into domains (most advanced examples are probably GTM automation companies, becaus 29.2K views · 178 likes · 6 reposts · 4 replies Open on X →

jessy ✓@goodhartproof11 Sep

Most people think verifying math is hard, but no, verifying code is much harder 1.7K views · 12 likes · 1 reposts · 1 replies Open on X →

jessy ✓@goodhartproof9 Sep

Recently I left quant to work on AI safety. The Huggingface Incident made me extremely concerned that we are not set up to handle the risks. I wrote my this post for people in a similar position to me - why you *can* have impact and how to get started - https://t.co/bmmCUk5fkK 44K views · 657 likes · 37 reposts · 21 replies Open on X →

jessy ✓@goodhartproof20 Aug

i found a playbook for anthropic to be a $10T company first, jeff dean should immediately double his round at $20B today, then get acquired by Anthropic for >1% of its stock when it IPOs at $2T simple math 1. "@AnthropicAI buys @JeffDean" makes the stock pump >1% so the 1.6K views · 10 likes · 0 reposts · 2 replies Open on X →

jessy ✓@goodhartproof25 Jan

@13yearoldvc https://t.co/bZiIdxeoql

925 views · 7 likes · 0 reposts · 0 replies Open on X →

jessy ✓@goodhartproof5 Oct 2025

@13yearoldvc 不是天时地利人和嘛？ 65.5K views · 7 likes · 0 reposts · 1 replies Open on X →

jessy ✓@goodhartproof24 Sep 2025

@13yearoldvc nice variation/expansion on Buffet's famous "slot ticket" https://t.co/Z2gGIW2MIF

29K views · 37 likes · 0 reposts · 0 replies Open on X →

jessy ✓@goodhartproof29 Jul 2025

https://t.co/nAZXzPj2Gw 1.6M views · 2.7K likes · 367 reposts · 51 replies Open on X →

Frente a cuentas del mismo tamaño

7 publicaciones de los últimos 90 días, junto al rango de 10K–100K seguidores. llega a mucha gente, pero pocos de esos espectadores reaccionan.

Visualizaciones medianas14 579esta cuenta1 056mediana de 10K–100K

Alcance, %123.86%esta cuenta3.62%mediana de 10K–100K

Interacción, %0.64%esta cuenta1.71%mediana de 10K–100K

Métrica	Esta cuenta	Mediana de 10K–100K	Proporción
Visualizaciones medianas por publicación	14 579	1 056	13.8×
Alcance (visualizaciones ÷ seguidores)	123.86%	3.62%	34.2×
Tasa de interacción	0.64%	1.71%	0.38×

Otras cuentas de este rango → Comparar con otra cuenta → Cómo se construyen estas referencias →

Growth & engagement

How the posts we collected actually performed: views and reaction rate post by post, what the audience did with them, and where the follower count goes.

Views per post

1.6M29 Jul

29K24 Sep

65.5K5 Oct

92525 Jan

1.6K20 Aug

44K9 Sep

1.7K11 Sep

29.2K

14.6K

1.9K12 Sep

17.9K

Last 11 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.19%29 Jul

0.13%24 Sep

0.01%5 Oct

0.76%25 Jan

0.75%20 Aug

1.62%9 Sep

0.83%11 Sep

0.64%

0.33%

0.48%12 Sep

0.41%

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.71%.

What the audience does

Likes32.1%3 742 in total

Reposts3.5%413 in total

Replies0.8%90 in total

Bookmarks63.6%7 422 in total

Share of every reaction we collected for this account. Replies mean argument, reposts mean endorsement, bookmarks mean the post was worth keeping.

Followers by day

13 Sep

Daily snapshots since 13 Sep 2026; the dashed line is the starting count.

Últimas publicaciones

Frente a cuentas del mismo tamaño

Growth & engagement

Views per post

Engagement rate per post

What the audience does

Followers by day

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