Jeff Klein

Nerding out in programmable payments. FinTech infra, API integrations, BaaS & Open Banking. Passionate about personal finance. Thoughts are my own.

[Crémieux @cremieuxrecueil]

Teachers average among the least intelligent university graduates.

In a given year, the lowest-scoring groups on the GRE, SAT, and ACT are usually those pursuing degrees in education.

[Claude @claudeai]

Claude in Excel is now available on Pro plans.

Claude now accepts multiple files via drag and drop, avoids overwriting your existing cells, and handles longer sessions with auto compaction.

Get started: https://t.co/cAMDXM1h7r

[Jeff Klein @JeffK954]

@techNmak LLM

[Krishna Agrawal @Krishnasagrawal]

Stop wasting hours trying to learn AI. 📘📚

I have already done it for you.

With one list. Zero confusion. And no fluff

📹 Videos:

1. LLM Introduction: https://t.co/OLkDaY7H7g

2. LLMs from Scratch: https://t.co/2N91lxtSh1

3. Agentic AI Overview (Stanford): https://t.co/4xX3JiNUlm

4. Building and Evaluating Agents: https://t.co/paoZnUdySm

5. Building Effective Agents: https://t.co/TICgQVUFCk

6. Building Agents with MCP: https://t.co/EPKu3G7Fms

7. Building an Agent from Scratch: https://t.co/U3XSK0Qx85

8. Philo Agents: https://t.co/wGNERv8TpH

🗂️ Repos

1. GenAI Agents: https://t.co/mmvbJpOSlG

2. Microsoft's AI Agents for Beginners: https://t.co/zQLhaT3Wpl

3. Prompt Engineering Guide: https://t.co/wYFPPKX4H1

4. Hands-On Large Language Models: https://t.co/92ZZJh6MXG

5. AI Agents for Beginners: https://t.co/zQLhaT3Wpl

6. GenAI Agentshttps://lnkd.in/dEt72MEy

7. Made with ML: https://t.co/gvzfW6aKnf

8. Hands-On AI Engineering:https://t.co/DHTvNbpMVk

9. Awesome Generative AI Guide: https://t.co/jfjbl5CQvA

10. Designing Machine Learning Systems: https://t.co/KIV2X9uKQs

11. Machine Learning for Beginners from Microsoft: https://t.co/Gdl4oZxQEY

12. LLM Course: https://t.co/59QVZqGED0

🗺️ Guides

1. Google's Agent Whitepaper: https://t.co/Psy7vqkVR2

2. Google's Agent Companion: https://t.co/sdw5mZhsOM

3. Building Effective Agents by Anthropic: https://t.co/euyR1t8Dg0.

4. Claude Code Best Agentic Coding practices: https://t.co/psPsyWWMwH

5. OpenAI's Practical Guide to Building Agents: https://t.co/67B9XaLolZ

📚Books:

1. Understanding Deep Learning: https://t.co/j5xz5XfkFL

2. Building an LLM from Scratch: https://t.co/TX8BJPpxX0

3. The LLM Engineering Handbook: https://t.co/rSWCiuvZYW

4. AI Agents: The Definitive Guide - Nicole Koenigstein: https://t.co/m3Tq3vE6Go

5. Building Applications with AI Agents - Michael Albada: https://t.co/QM4mYlYdWh

6. AI Agents with MCP - Kyle Stratis: https://t.co/sIqEe430D6

7. AI Engineering: https://t.co/hs4bN4xFAV

📜 Papers

1. ReAct: https://t.co/k3tFy7pbvR

2. Generative Agents: https://t.co/yQp1Tjl94i.

3. Toolformer: https://t.co/RKBauj9GVX

4. Chain-of-Thought Prompting: https://t.co/fVqbr68wvt.

🧑🏫 Courses:

1. HuggingFace's Agent Course: https://t.co/OYgR6C8HNd

2. MCP with Anthropic: https://t.co/n5nnFc9DUC

3. Building Vector Databases with Pinecone: https://t.co/MLhJnfbdGG

4. Vector Databases from Embeddings to Apps: https://t.co/31zEvnwtfZ

5. Agent Memory: https://t.co/ldYc6RVmMj

Repost for your network ♻️

[Gregory Kennedy @gregorykennedy]

Dave: "So let me get this straight, Michael. You started Cursor three years ago."

Michael: "Yes, Dave."

Dave: "And you just raised $900 million."

Michael: "Correct."

Dave: "At a $9.9 billion valuation."

Michael: "That's right."

Dave: "You're doing over $500 million in ARR."

Michael: "Yes."

Dave: "Which means your revenue has been doubling every two months."

Michael: "Pretty much."

Dave: "And OpenAI tried to buy you."

Michael: "They did."

Dave: "But you said no."

Michael: "We turned them down."

Dave: "So they bought your competitor Windsurf for $3 billion instead."

Michael: "That happened, yes."

Dave: "The competitor doing $100 million ARR while you're at $500 million."

Michael: "I'm aware of the math, Dave."

Dave: "And you're still just a fork of VS Code."

Michael: "Well, when you say it like that—"

Dave: "So your entire $9.9 billion company depends on Microsoft not changing its API."

Michael: "We prefer to call it 'strategic interdependence.'"

Dave: "Okay. Thanks for calling in."

THE VERY NEXT DAY:

Dave: "Michael, you're calling back already?"

Michael: "We just raised another round."

Dave: "How much?"

Michael: "$2.3 billion."

Dave: "At what valuation?"

Michael: "$29.3 billion."

Dave: "You were at $9.9 billion yesterday."

Michael: "Correct."

Dave: "Did you stop being a fork of VS Code?"

Michael: "No."

Dave: "Did Microsoft give you permission to use their code?"

Michael: "They haven't said no."

Dave: "So you tripled your valuation in 24 hours and nothing fundamentally changed."

Michael: "Our revenue is still doubling every two months."

Dave: "You're still one API change away from bankruptcy."

Michael: "Strategic interdependence, Dave."

Dave: "We're done here, Michael. Stop calling."

[Aravind Srinivas @AravSrinivas]

You can now track insider trading on Perplexity Finance. We will be adding politician trading shortly.

[Phantom @phantom]

Meet Phantom Cash.

The power of crypto 🤝 the ease of cash.

Join the waitlist today.

[Bunsan @BunsanXBT]

In Seoul, perp trading is an e-sport

1001x leverage isn’t enough ammo. Respawn after liquidation. The thrill is real.

[High Yield Hustle @HighYieldHustle]

$1,000,000 retirement portfolio with zero NAV erosion:

Capital: Annual dividends:

$BTCI $300,000 = $81,000 💵
$QQQI $300,000 = $42,000 💵
$SPYI $300,000 = $36,000 💵
$IBIT $100,000 = infinite growth 📈

Annual dividends: $159,000

This is the power of buying yourself a salary.

But with this kind of capital there are ways to manage your portfolio to get even more income. 🧵👇

[Reuters @Reuters]

Visa closes US open-banking unit as data fight heats up, source says https://t.co/Bihgmc184Q https://t.co/Bihgmc184Q

[thiccy @thiccyth0t]

https://t.co/cEvsHIHA0Z

[Jeff Klein @JeffK954]

@DevotedDividend What is total NAV lost at cost basis relative to dividend payouts annualized?

[Fiat Archive @fiatarchive]

Charles Schwab CEO says Bitcoin and crypto buying is coming for 37 million clients.

[Nicholas Fabiano, MD @NTFabiano]

The gym bros were right

[vitalik.eth @VitalikButerin]

Nordics are walking back the cashless society initiative because their centralized implementation of the concept is too fragile. Cash turns out necessary as a backup.

Ethereum needs to be resilient enough, and private enough, to be able to credibly play this kind of role.

https://t.co/WDZxk7Cnxf

[The Wall Street Journal @WSJ]

Creatine is hot—and not just among the bodybuilder set. It could be good for bone, brain and muscle health. https://t.co/nKDny0AR5K

[Jeff Klein @JeffK954]

@anothercohen Still much cheaper when accounting for budgeting smashed vehicle window replacement costs # “Safelite repair, Safelite replace”

[Jeff Klein @JeffK954]

With age comes wisdom. Good sleep (getting into REM), daily sunshine, whey, creatine, vitamin D, magnesium, clean eating (protein, veg, fruit), IF (16/8), avoid high fructose corn syrup, minimal to no alcohol, no drugs, lemon water, lift heavy 4-5 days/week. This is the way.

[Dan Go @CoachDanGo]

I wake up at 6am.

I love taking walks.

I’m eating my last meal at 5pm.

I’m going to bed by 930 to 10pm.

I’m starting to realize that old people had it right the entire time.

[Lisa Abramowicz @lisaabramowicz1]

“There has been a sharp stop of foreign investor inflow into US bond and equity markets over the last 2 months…The flow evidence so far points to an, at best, very rapid slowing in US capital inflows and, at worst, continued active disinvestment from US assets:” DB’s Saravelos