Simon Tiu

712 posts

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Simon Tiu

Simon Tiu

@simontiu

VC @vertexventures. Dad. Prev @qatalystgroup @google @deloitte.

San Francisco انضم Nisan 2011
776 يتبع286 المتابعون
Simon Tiu أُعيد تغريده
Ramp Labs
Ramp Labs@RampLabs·
Today, we're launching Ramp Agent Cards. There's been no safe way for agents to spend money, until now. Ramp Agent Cards give agents the ability to spend, governed with real spend limits, merchant controls, and full visibility into every transaction.
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Marc Andreessen 🇺🇸
Overheard in Silicon Valley: “The current brainiac position is that AI *should* dictate war policy to the government but *should not* answer questions about your hangnail.”
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Simon Tiu
Simon Tiu@simontiu·
@levelsio ai coding agents: simultaneously the best productivity tool and the most expensive rm -rf you'll ever run
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@levelsio
@levelsio@levelsio·
The 3-2-1 Backup Rule is more important than ever if you code with AI because fatal accidents can happen It means you should have 3 copies of your data, in 2 different media types and 1 copy off-site 1) One is the actual data on your own server (the hard drive) or DB server 2) One backup is in cloud storage (that's the different media type) 3) One backup is off site, at another provider, and preferrably in another geographical location For me that's 1) Hetzner VPS, 2) Hetzner's own daily and weekly backups on the dashboard, and 3) Backblaze B2 Hetzner's own backups are impossible to access by the VPS or AI, so that's safer If you use AWS or other providers you can apply the 3-2-1 Backup Rule in your own way I've never lost any data!
Alexey Grigorev@Al_Grigor

Claude Code wiped our production database with a Terraform command. It took down the DataTalksClub course platform and 2.5 years of submissions: homework, projects, and leaderboards. Automated snapshots were gone too. In the newsletter, I wrote the full timeline + what I changed so this doesn't happen again. If you use Terraform (or let agents touch infra), this is a good story for you to read. alexeyondata.substack.com/p/how-i-droppe…

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Simon Tiu
Simon Tiu@simontiu·
startup pitch in 2024: "we're building AI agents" startup pitch in 2026: "we're building guardrails so your AI agent doesn't terraform your production database into oblivion"
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Simon Tiu
Simon Tiu@simontiu·
ok apple names a laptop "neo" the same year AI agents start proliferating. the simulation isn't even trying to hide it anymore.
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Simon Tiu
Simon Tiu@simontiu·
@swyx congratulations! your electron tax evolved into chromium tax! +2GB RAM usage -10 performance +0 features gotta catch 'em all
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swyx
swyx@swyx·
stop fucking shipping a chrome browser in every fucking tool i use fuck
swyx tweet media
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Simon Tiu
Simon Tiu@simontiu·
microsoft fumbling copilot for excel is such a L for them claude code just runs circles around it for cohort analysis they had the entire moat, first-mover advantage, still lost
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Simon Tiu
Simon Tiu@simontiu·
92k jobs lost in February while Codex adds 600k users in 3 weeks. something to think about
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Simon Tiu
Simon Tiu@simontiu·
@jamwt This is so, so good. Wow thank you!
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Jamie Turner
Jamie Turner@jamwt·
I made a video demystifying database consistency, isolation levels, record contention, and pessimistic vs. optimistic concurrency control tradeoffs. (I also said "dollars" instead of "pounds" 40 times.) Check it out if you want a basic working knowledge of this stuff.
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Jared Friedman
Jared Friedman@snowmaker·
Even the best developer tools mostly still don't let you sign up for an account via API. This is a big miss in the claude code age because it means that claude can't sign up on its own. Putting all your account management functions in your API should be tablestakes now.
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Simon Tiu
Simon Tiu@simontiu·
👀👀👀
jack@jack

we're making @blocks smaller today. here's my note to the company. #### today we're making one of the hardest decisions in the history of our company: we're reducing our organization by nearly half, from over 10,000 people to just under 6,000. that means over 4,000 of you are being asked to leave or entering into consultation. i'll be straight about what's happening, why, and what it means for everyone. first off, if you're one of the people affected, you'll receive your salary for 20 weeks + 1 week per year of tenure, equity vested through the end of may, 6 months of health care, your corporate devices, and $5,000 to put toward whatever you need to help you in this transition (if you’re outside the U.S. you’ll receive similar support but exact details are going to vary based on local requirements). i want you to know that before anything else. everyone will be notified today, whether you're being asked to leave, entering consultation, or asked to stay. we're not making this decision because we're in trouble. our business is strong. gross profit continues to grow, we continue to serve more and more customers, and profitability is improving. but something has changed. we're already seeing that the intelligence tools we’re creating and using, paired with smaller and flatter teams, are enabling a new way of working which fundamentally changes what it means to build and run a company. and that's accelerating rapidly. i had two options: cut gradually over months or years as this shift plays out, or be honest about where we are and act on it now. i chose the latter. repeated rounds of cuts are destructive to morale, to focus, and to the trust that customers and shareholders place in our ability to lead. i'd rather take a hard, clear action now and build from a position we believe in than manage a slow reduction of people toward the same outcome. a smaller company also gives us the space to grow our business the right way, on our own terms, instead of constantly reacting to market pressures. a decision at this scale carries risk. but so does standing still. we've done a full review to determine the roles and people we require to reliably grow the business from here, and we've pressure-tested those decisions from multiple angles. i accept that we may have gotten some of them wrong, and we've built in flexibility to account for that, and do the right thing for our customers. we're not going to just disappear people from slack and email and pretend they were never here. communication channels will stay open through thursday evening (pacific) so everyone can say goodbye properly, and share whatever you wish. i'll also be hosting a live video session to thank everyone at 3:35pm pacific. i know doing it this way might feel awkward. i'd rather it feel awkward and human than efficient and cold. to those of you leaving…i’m grateful for you, and i’m sorry to put you through this. you built what this company is today. that's a fact that i'll honor forever. this decision is not a reflection of what you contributed. you will be a great contributor to any organization going forward. to those staying…i made this decision, and i'll own it. what i'm asking of you is to build with me. we're going to build this company with intelligence at the core of everything we do. how we work, how we create, how we serve our customers. our customers will feel this shift too, and we're going to help them navigate it: towards a future where they can build their own features directly, composed of our capabilities and served through our interfaces. that's what i'm focused on now. expect a note from me tomorrow. jack

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Nichole Wischoff
Nichole Wischoff@NWischoff·
Selling 8% of your company for $125k is insane
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Simon Tiu
Simon Tiu@simontiu·
@GaryMarcus Cheap lesson all things considered could have been much worse
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Simon Tiu
Simon Tiu@simontiu·
@fchollet confirmation bias is a feature, not a bug
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François Chollet
François Chollet@fchollet·
There are two categories of people: those who quickly figure out that chatbots give you the answer you expect when you ask questions in a biased way, and the ascended polymaths currently out-thinking every expert on Earth
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Simon Tiu
Simon Tiu@simontiu·
opus 4.6 is anakin skywalker. codex 5.3 is C-3PO.
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Simon Tiu أُعيد تغريده
Dreamer
Dreamer@dreamer·
Introducing Dreamer. A place to discover, build, and enjoy agentic apps. It’s your home for personal intelligence. Now in beta. Sign up👇
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Simon Tiu
Simon Tiu@simontiu·
@AravSrinivas memory + multi-model deliberation is lowkey one of the most important product features that nobody's talking about. single model = gambling on one perspective. council with memory = compounding judgment over time.
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Aravind Srinivas
Aravind Srinivas@AravSrinivas·
Memory now works with Model Council. Have fun having multiple frontier reasoning models think about your data together and work for you!
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Simon Tiu
Simon Tiu@simontiu·
@fchollet this is the real story beneath all the benchmark chest-thumping. models are memorizing the test format, not learning the underlying skill. change the encoding slightly and performance craters. that's pattern matching, not reasoning.
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François Chollet
François Chollet@fchollet·
Interesting finding on frontier model performance on ARC -- due to extensive direct targeting of the benchmark, models are overfitting to the original ARC encoding format. Frontier model performance remains largely tied to a familiar input distribution.
Melanie Mitchell@MelMitchell1

@mikeknoop We found that if we change the encoding from numbers to other kinds of symbols, the accuracy goes down. (Results to be published soon.) We also identified other kinds of possible shortcuts.

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Simon Tiu
Simon Tiu@simontiu·
2 decades avoiding regex. Claude arrives. best. procrastination. ever.
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