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Jon Felske @jonfelske

Helping people make better decisions everyday. San Francisco, CA Joined September 2010
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Jon Felske retweeted
CompleteSkeptic Profile Picture

Diogo Almeida @CompleteSkeptic

a month ago

After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI? I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev • 20-200x faster • 40-400x cheaper (w/ output tokens free) • Frontier composable intelligence optimized for decisions AFAICT the shortest path to AI-based economic revolution

Jon Felske retweeted
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chuplung @choopyplug1

2 months ago

Google's team just dropped a 9-page PDF on Harness Engineering - one formula replaced prompt engineering: the twist: same Claude Sonnet, same benchmark - change only the harness the formula: Agent = Model + Harness here's the playbook in 6 steps: step 1 → add guides - AGENTS.md, rule files, constraint docs - each line is a past agent failure turned into a permanent fix step 2 → add sensors - linters, tests, validation scripts the agent runs on its own output before a human sees it step 3 → build the agentic loop - plan, execute, verify, fix - bounded retries, budget caps, escalation when stuck step 4 → externalize memory - the model forgets every session. the harness remembers state, decisions, and artifacts across all of them step 5 → enforce permissions - which tools, how many writes, what needs approval. the model doesn't enforce safety. the harness does step 6 → wire observability - track every tool call, cost, retry. trip wires fire when behavior drifts the result: your agent stops being a demo and starts being infrastructure - every failure makes the system permanently better, not just the next conversation this 9-page PDF is what comes after prompt engineering and context engineering bookmark and build the full system from the article below ↓

choopyplug1 Profile Picture

chuplung @choopyplug1

2 months ago

x.com/i/article/2088…

jonfelske Profile Picture

Jon Felske @jonfelske

7 months ago

@chamath Backboard.io

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Jon Felske @jonfelske

a year ago

This will be interesting to see if a third party can form. There is definitely room in the middle,

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Elon Musk @elonmusk

a year ago

By a factor of 2 to 1, you want a new political party and you shall have it! When it comes to bankrupting our country with waste & graft, we live in a one-party system, not a democracy. Today, the America Party is formed to give you back your freedom.

Jon Felske retweeted
elonmusk Profile Picture

Elon Musk @elonmusk

a year ago

By a factor of 2 to 1, you want a new political party and you shall have it! When it comes to bankrupting our country with waste & graft, we live in a one-party system, not a democracy. Today, the America Party is formed to give you back your freedom.

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Elon Musk @elonmusk

a year ago

Independence Day is the perfect time to ask if you want independence from the two-party (some would say uniparty) system! Should we create the America Party?

Jon Felske retweeted
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Sam Altman @sama

a year ago

recently the NYT asked a court to force us to not delete any user chats. we think this was an inappropriate request that sets a bad precedent. we are appealing the decision. we will fight any demand that compromises our users' privacy; this is a core principle.

Jon Felske retweeted
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tobi lutke @tobi

a year ago

Courtyards are magical

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City Aesthetics ⛩ @cityaestheticss

a year ago

We perfected the courtyard… Then we suddenly just stopped designing them

Jon Felske retweeted
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Ray Dalio @RayDalio

2 years ago

x.com/i/article/1907…

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Jon Felske @jonfelske

2 years ago

@RobImbeault @esthercrawford lol and that was just one re-org ago. Now it’s mysterious and magical!

Jon Felske retweeted
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Michael Saylor @saylor

2 years ago

SAB 121 has been rescinded, allowing banks to custody Bitcoin. 🚀

Jon Felske retweeted
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Chamath Palihapitiya @chamath

2 years ago

This needs to be fixed or it will end in disaster. Why? Average Americans buy S&P 500 index ETFs, in part, because Buffett told them to. They were told they would pay very little and get diversification in the 500 best companies on earth to ride out storms. But as concentrations rise in a very small percentage of those stocks, the risks don’t fall. They rise. If the indices don’t cap the max percentage of any one stock, you essentially are holding a direct bet on that ONE company. In this case, see that when you buy an index of 500 companies, you’re really buying 10 companies with 490 others thrown in. If there is any market volatility, the lack of diversification could cause massive impairment. That’s ok if you’re a “professional” and that’s what you are betting on but most ETF buyers aren’t professional stock traders and they will be in for a rude awakening if this isn’t addressed.

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Kevin Gordon @KevRGordon

2 years ago

The 10 largest stocks in the S&P 500 now represent 39.9% of the index's market cap

Jon Felske retweeted
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Jack Altman @jaltma

2 years ago

Vacation with little kids is not a vacation. It's a war of attrition and a test of your love.

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Jon Felske @jonfelske

2 years ago

And the noble prize goes to AI! 🤖nobelprize.org/prizes/physics…

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Jon Felske @jonfelske

3 years ago

Day two threads! @AdaptAgtech love the new brand! threads.net/t/CuWrsD6AId3/…

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Jon Felske @jonfelske

3 years ago

@joinyellowbrick NVDA

Jon Felske retweeted
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Google DeepMind @GoogleDeepMind

3 years ago

Introducing RoboCat, a new AI model designed to operate multiple robots. 🤖 It learns to solve new tasks on different robotic arms with as few as 100 demonstrations - and improves skills from self-generated training data. Find out more: dpmd.ai/robocat-tw

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Jon Felske @jonfelske

3 years ago

@courtneymmmmmm @davidrodwin @SFMayorsOffice @LondonBreed @SFPD @KTVU @SFCarBreakins #batman Where are the cops?

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Jon Felske @jonfelske

3 years ago

@offmeta @davidrodwin @SFMayorsOffice @LondonBreed @SFPD @KTVU @SFCarBreakins My friend's car was stolen and an airtag tracker in it. They knew exactly where it was and who took it. Cops wouldn't get it for him. The problem is they aren't enforcing or prosecuting. Not sure why, but clearly we need better leadership.

Jon Felske retweeted
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Ankur Nagpal @ankurnagpal

3 years ago

I used to think the tax incentives in real estate were unparalleled But my mind was just blown after learning about the economics of investing in solar projects 🤯 Probably the best tax saver out there for anyone with a high W-2 or business owner income Here's how it works:

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Jon Felske @jonfelske

3 years ago

Life is a marathon,not a sprint, remember to take a moment for yourself.

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