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Lenny Rachitsky

Writer of Lenny's Newsletter and host of Lenny's Podcast.

LR
Essays & posts326
Podcast episodes317
X posts6
Newest first
Lenny’s Podcast89 min

The rise of Cursor: The $300M ARR AI tool that engineers can’t stop using

Michael Truell · May 1, 2025
Key learnings
  • Build the product you and your team actually use every day (dogfooding) so you never ship anything that isn't genuinely useful…
  • When working with AI coding tools, chop tasks into small specify-generate-review loops rather than handing over one giant…
  • Spend time on side projects deliberately pushing AI to its limits to build a calibrated gut feeling for what current models can…
Lenny’s Podcast106 min

Inside monday.com’s transformation: radical transparency, impact over output, and their path to $1B ARR

Daniel Lereya · Apr 27, 2025
Key learnings
  • Treat a competitor's rapid shipping as a gift that proves a goal is possible, then set an ambitious target that forces you to…
  • Measure product managers by the impact they validate for customers, not by features shipped; define the problem, the opportunity…
  • Ask each quarter what your product will do differently for customers a quarter from now, and check whether you can name your…
Lenny’s Podcast107 min

Building a magical AI code editor used by over 1 million developers in four months: The untold story of Windsurf

Varun Mohan · Apr 20, 2025
Key learnings
  • Expect your first big bet to be wrong; stay irrationally optimistic about the vision while ruthlessly testing and discarding the…
  • Be willing to pivot fully and quickly when hypotheses break, as Varun's team did when model architectures converged on…
  • Build the interface where AI-generated code gets reviewed, not just where it gets typed; Windsurf's tripled acceptance rate after…
Lenny’s Podcast98 min

Everyone’s an engineer now: Inside v0’s mission to create a hundred million builders

Guillermo Rauch · Apr 13, 2025
Key learnings
  • Treat taste as a skill you can build by increasing exposure hours: deliberately spend time watching people use your product and…
  • Learn how systems work under the hood, since knowing the right technical tokens helps you steer AI models toward your intent more…
  • Put product feedback loops inside the product itself, as Rauch suggests borrowing from Stripe's in-product feedback button…
Lenny’s Podcast116 min

OpenAI’s CPO on how AI changes must-have skills, moats, coding, startup playbooks, more

Kevin Weil · Apr 10, 2025
Key learnings
  • Build products at the edge of current model capabilities, since models improve every few months and a barely-working product can…
  • Treat evals as unit tests for models: define hero use cases, write evals for them, and hill-climb on those evals to know whether…
  • Expect AI behavior to be fuzzy: a model right 60%, 95%, or 99.5% of the time implies very different product designs, so study…
Lenny’s Podcast71 min

Become a better communicator: Specific frameworks to improve your clarity, influence, and impact

Wes Kao · Apr 6, 2025
Key learnings
  • Spend less time on why an idea matters and more on the specific how: concrete steps, nuances, and examples that let people apply…
  • Cut backstory and preamble; start right before the juicy part of the story, as Wes puts it, 'right before you get eaten by the…
  • Recognize that formats like Twitter or keynotes allow more BS, while courses and cohort settings demand rigor because students…
Lenny’s Podcast133 min

A better way to plan, build, and ship products

Ryan Singer · Mar 30, 2025
Key learnings
  • Start from a fixed time budget (appetite) and shape a solution that fits it, rather than estimating a large idea and hoping it…
  • Hold shaping sessions where product, design, and a senior engineer work together to sketch the idea and surface technical…
  • Aim for a shaped idea describable in under about ten moving pieces; if it takes more, it likely isn't shaped well enough.
Lenny’s Podcast110 min

How to win in the AI era: Ship a feature every week, embrace technical debt, ruthlessly cut scope, and create magic your competitors can't copy

Gaurav Misra · Mar 27, 2025
Key learnings
  • Aim for every engineer to ship a marketable product each week, sliced down to an MVP so the team can gather real user feedback…
  • When time is tight, cut scope rather than quality: repeatedly remove elements from a feature until removing anything more would…
  • Treat technical debt as financial leverage for startups, but track it like interest: once debt consumes most engineering time…
Lenny’s Podcast102 min

Superhuman's secret to success: Ignoring most customer feedback, manually onboarding every new user, obsessing over every detail, and positioning around a single attribute: speed

Rahul Vohra · Mar 23, 2025
Key learnings
  • Virality rarely comes from viral mechanics; a viral factor above one is essentially unsustainable, so word of mouth driven by…
  • Track your time with a simple running log of task switches instead of your calendar, then review it weekly to see where your…
  • When leadership is stretched thin, hire a president to take over operations and executive team management so the CEO can spend…
Lenny’s Podcast115 min

Inside Bolt: From near-death to ~$40m ARR in 5 months—one of the fastest-growing products in history

Eric Simons · Mar 13, 2025
Key learnings
  • Eric Simons says deep technology bets can take years to find their market; his team stayed alive by bootstrapping and keeping…
  • Simons advises treating spending as a default no until you see real customer pull, and buying software with the goal of cutting…
  • Simons notes that when a launch unexpectedly takes off, pricing and infrastructure often break first; Bolt rolled out upgrade…
Lenny’s Podcast79 min

Building Lovable: $10M ARR in 60 days with 15 people

Anton Osika · Mar 9, 2025
Key learnings
  • Be precise and explicit when prompting an AI builder: say exactly what you expect and which parts are not working, rather than…
  • Use the agent's chat mode to ask how something works or why it isn't doing what you want; this builds understanding while you…
  • Expect to spend a full week taking one real problem from idea to a working product that people use; Anton suggests that alone…
Lenny’s Podcast83 min

Notion’s lost years, its near collapse during Covid, staying small to move fast, the joy and suffering of building horizontal, more

Ivan Zhao · Mar 6, 2025
Key learnings
  • Hide a grand vision inside a product people already want: Notion's 'sugar-coated broccoli' approach meant shipping familiar…
  • Test whether your early adoption comes from real users, not just from your own taste: Ivan warns that building too much for…
  • Don't be afraid to reset the codebase when the foundation is wrong, and favor better abstractions, since a small core can…
Lenny’s Podcast121 min

The creator of WordPress opens up about becoming an internet villain, why he’s taking a stand, and the future of open source

Matt Mullenweg · Mar 2, 2025
Key learnings
  • Build a movement, not just a product: give community members a philosophy and shared identity, plus many ways to contribute…
  • A platform only becomes durable when its ecosystem of plugins and themes is a moat competitors can't easily replicate.
  • Open source licensing like the GPL guarantees users and builders keep their freedoms even if the steward changes course…
Lenny’s Podcast133 min

An inside look at X’s Community Notes

Keith Coleman & Jay Baxter · Feb 27, 2025
Key learnings
  • Surface notes only when raters who normally disagree both find them helpful; seeking cross-polarized agreement is what keeps…
  • Open participation to everyone with basic verification and random selection, rather than curating contributors, so the system…
  • Set the quality bar conservatively: showing a bad note damages trust far more than withholding a good one, so the team accepts…
Lenny’s Podcast81 min

OpenAI researcher on why soft skills are the future of work

Karina Nguyen · Feb 9, 2025
Key learnings
  • Build rigorous evals first: define deterministic pass/fail behaviors (e.g., correct time handling) and human win-rate comparisons…
  • Use prompting as a fast prototyping method to test product ideas before engineering investment, as Karina did with file uploads…
  • Synthetic data scales cheaply for teaching core product behaviors, but human expert data is still needed for specialized…
Lenny’s Podcast108 min

Tobi Lutke

Tobi Lutke · Feb 2, 2025
Key learnings
  • Start new product decisions from first principles by re-deriving them from today's building blocks instead of copying what…
  • Be suspicious of pitches to build a better version of what everyone already does; doing the same thing cannot yield something…
  • Stay close to the details of the work, including the underlying technology, so decisions rest on real understanding rather than…
Lenny’s Podcast112 min

Linear’s secret to building beloved B2B products

Nan Yu · Jan 30, 2025
Key learnings
  • Speed and quality aren't a trade-off; true craftspeople move fast because they are competent, so aim to get a workable version…
  • Treat the first version as a best guess to test key assumptions, not a polished deliverable, and release it to internal users…
  • Refuse feature requests that add customization for middle-manager reporting at the expense of individual contributors' workflows…
Lenny’s Podcast128 min

An operator’s guide to product strategy

Chandra Janakiraman · Jan 26, 2025
Key learnings
  • Treat product strategy as the layer between mission/vision and the roadmap; it should name a few focus areas (strategic pillars)…
  • Budget roughly 8 to 12 weeks for a small-S strategy, since it can be leveraged for about two years and the upfront investment is…
  • Form a strategy working group of engineering, product design, and data (plus research or marketing if available) so the strategy…
Lenny’s Podcast86 min

How to break out of autopilot and create the life you want

Graham Weaver · Jan 16, 2025
Key learnings
  • Ask yourself what you would pursue if you knew you wouldn't fail, then work backward from that goal to find a path toward it.
  • Write down your limiting beliefs and fears on paper; once externalized they lose power and become concrete to-do items you can…
  • Build accountability through an executive coach, a like-minded friend, or a weekly written form tracking goals and next steps.
Lenny’s Podcast124 min

Behind the founder: Drew Houston (Dropbox)

Drew Houston · Jan 9, 2025
Key learnings
  • Viral growth can be engineered: Houston credits a demo video, referral loops, and a beta waitlist that grew from 5,000 to 85,000…
  • When a product is broadly useful, competitors can bundle it free into their platforms; Houston argues the real defense is…
  • Borrow strategy from classic books: Houston credits Playing to Win and Only the Paranoid Survive for pushing him to narrow focus…
Lenny’s Podcast115 min

Scripts for difficult conversations: Giving hard feedback, navigating defensiveness, the three questions you should end every meeting with, more

Alisa Cohn · Jan 5, 2025
Key learnings
  • Before a hard conversation, identify what you're making it mean (e.g., fear of upsetting someone) and check your intent: the aim…
  • Frame performance feedback around observable facts and expectations, citing what you've heard from multiple people, and keep your…
  • Build the relationship with positive, specific feedback regularly so people hear criticism as coming from someone who wants to…
Lenny’s Podcast110 min

Why great AI products are all about the data

Shaun Clowes · Dec 29, 2024
Key learnings
  • Start every document from the customer, market, and competitor perspective rather than internal execution, since…
  • Right-size qualitative research: interview roughly 7 to 14 people, because fewer gives too little signal and more stops yielding…
  • Use LLMs to hunt for where your strategy doesn't fit customer feedback, not to confirm what you already believe, and to infer…
Lenny’s Podcast73 min

Behind the founder: Marc Benioff

Marc Benioff · Dec 22, 2024
Key learnings
  • Test many tactics at once when launching, then double down on whichever one proves to be the winning strategy.
  • Cultivate a beginner's mind so you keep seeing possibilities instead of assuming you already know what will work.
  • Treat your company as a startup even at scale; the journey, not the stock price, should be the reward.
Lenny’s Podcast150 min

How Shopify builds a high-intensity culture

Farhan Thawar · Dec 19, 2024
Key learnings
  • Choose the harder path when options are close: even if it fails, you gain skills and work with stronger people, whereas the easy…
  • Write down a personal framework of what you care about in a job, and use it to filter opportunities and decide when to leave a…
  • Build intensity by producing more output per minute rather than adding hours; a focused hour with strong people can outpace a…
Lenny’s Podcast118 min

Behind the product: Duolingo streaks

Jackson Shuttleworth · Dec 15, 2024
Key learnings
  • Streaks are an engagement amplifier, not a substitute: first make sure the core product is something users want to return to…
  • Choose a unit of use that matches real engagement; simplifying the streak to one lesson kept users, but dumbing it down to one…
  • Focus effort on the first seven days, since loss aversion appears to kick in once a streak reaches about seven days and retention…
Lenny’s Podcast58 min

Seth Godin's best tactics for building remarkable products, strategies, brands and more

Seth Godin · Dec 8, 2024
Key learnings
  • Define quality as meeting spec, and relentlessly improve the spec in service of the people you serve rather than polishing…
  • Treat good taste as anticipating what people want just before they do, and build it by working alongside people with high…
  • Treat brand as a promise: decide what you stand for, what you don't do, and what you'd be missed for, then make a difficult…
Lenny’s Podcast114 min

How a great founder becomes a great CEO

Jonathan Lowenhar · Dec 5, 2024
Key learnings
  • Being a founder is a state of being, while being a CEO is a craft; founders should deliberately develop CEO skills like planning…
  • Calibrate between founder mode and manager mode depending on what the moment needs; great CEOs know when to dive into details and…
  • Start planning by working backwards from your next major milestone (exit, fundraise, profitability, or wind-down) and define what…
Lenny’s Podcast68 min

Behind the product: Replit

Amjad Masad · Nov 21, 2024
Key learnings
  • Replit aims to remove the setup friction of building software by bundling the editor, runtime, packages, database, and deployment…
  • Once AI removes the build bottleneck, the limiting factor shifts to how fast you can generate and articulate good ideas, so…
  • Product managers can use an AI agent to build a v1 prototype, test it with real users, and then hand a validated concept to…
Lenny’s Podcast84 min

Building Wiz: the fastest-growing startup in history

Raaz Herzberg · Nov 17, 2024
Key learnings
  • Early in a startup, look for signs of real pull, such as prospects asking about pricing, timelines, or introducing you to their…
  • Be willing to say 'I don't understand' in product discussions; a healthy culture makes admitting confusion a strength, and…
  • Run a high volume of customer conversations (10 to 15 a day in Wiz's case) to find what actually resonates rather than relying on…
Lenny’s Podcast94 min

Breaking the rules of growth: Why Shopify bans KPIs, optimizes for churn, prioritizes intuition, and builds toward a 100-year vision

Archie Abrams · Nov 7, 2024
Key learnings
  • Optimize for the absolute number of people reaching each funnel stage, not local conversion rates, since rate-chasing teams often…
  • Judge growth by the total long-term value of a merchant cohort (cumulative GMV over several years) rather than per-merchant or…
  • Keep long-term holdouts and revisit experiments at 3, 6, 12, and 24 months, because many short-term wins fade and some neutral…