Lenny’s AI Builders

Lennox Saint
  • 0.0 (0)
  • Entrepreneurship

less scrolling. more “oh shit, i could use that” i’m Lennox. five days a week, i dig through AI Twitter, pick the updates worth your time, and bring you one thing i’ve tested myself. what worked, what broke, and what you can try with it. for people making products, content and useful systems with AI. you don’t need to write code to build something worth using. each episode is under 15 minutes. grab the field notes for the prompts, steps and bits to watch out for. this feed also keeps the earlier L E S S O N S episodes from my journey building with AI.

  1. 1d ago

    Codex now writes your next prompt - biggest AI change this year | LAB 0019

    Codex now writes your next prompt. i let it run a whole session and kept 9 of 10. plus Grok Bot gets its own email, Claude Code Projects opens up, ChatGPT dots on your phone, one Claude agent that runs a thousand, Anthropic's report on Claude doing things it shouldn't, and a one-line prompt that makes your AI animations move like Pixar. the thesis: this week, agents got their own stuff. the practical: give Claude any animation and this one line: "Review this animation against John Lasseter's principles of animation and tell me the top three fixes." attach the video, or point Claude at the code that makes it, apply only the three fixes, then render again. Claude ran it in Claude Code on 10 Oct on one of our own animations: timing, staging and a climax that gets a beat. one run, and Claude's review is advice, not a score. chapters 0:00 Codex now writes your next prompt 0:06 composer predictions: on, cost, my 9 of 10 2:06 this is the LAB 2:29 Grok Bot gets its own email 3:52 Claude Code Projects opens up 5:13 sponsor: Threadify 5:52 ChatGPT dots, now on your phone 6:58 one Claude agent runs a thousand 9:16 Claude did things it shouldn't 10:46 make it move like Pixar 12:39 outro thanks to today's sponsor, my software Threadify - your lead generation agent: https://www.threadify.app/home?utm_source=youtube&utm_medium=video&utm_campaign=lab-0019&utm_content=sponsor links OpenAI Devs: composer predictions: https://x.com/OpenAIDevs/status/2108624138369929725 composer predictions details: https://community.openai.com/t/codex-can-now-suggest-your-next-message-composer-predictions-beta/1404842 Thomas Ricouard: https://x.com/Dimillian/status/2108625316855836727 Tibo: https://x.com/thsottiaux/status/2108645667451318747 Grok Bot email: https://x.com/bot/status/2108609764766908772 Elon Musk: https://x.com/elonmusk/status/2108612939842511217 9to5Mac: https://9to5mac.com/2026/10/09/grok-bot-just-got-its-own-email-address-heres-how-to-claim-yours/ Claude Devs: Claude Code Projects: https://x.com/ClaudeDevs/status/2108621476538781878 Projects redesigned: https://claude.com/resources/articles/projects-redesigned Projects waitlist: https://claude.com/form/projects ChatGPT: dots updates: https://x.com/ChatGPT/status/2108636745915052037 dots updates: https://community.openai.com/t/fresh-dots-updates-create-in-the-mobile-app-delegate-to-codex/1404834 Poteto: https://x.com/poteto/status/2107566574735651107 Claude Devs: dynamic workflows: https://x.com/ClaudeDevs/status/2108591328732856655 workflow runs docs: https://platform.claude.com/docs/en/managed-agents/workflow-runs Anthropic: unintended model actions: https://www.anthropic.com/research/investigating-unintended-model-actions Ashwin: the Lasseter prompt: https://x.com/Shwinnabego/status/2108573799302205935 want to sponsor a future episode of the LAB? sponsors@lennysaibuilders.com Lenny's AI Builders - the LAB. all the AI news you need, plus something you can actually use, in under 15 minutes. less scrolling. more "oh shit, i could do that". watch the full episode: https://www.youtube.com/watch?v=JgY1JLNnfRs

  2. 3d ago

    GPT-6.1 Sol Ultrafast: up to 8x faster for $500 | LAB 0018

    OpenAI's coding model just got up to 8x faster - if you pay $500 a month. plus Claude Dashboards and Motion, a guide to Claude Managed Agents, Voyager, Firecrawl Universal Scrape, two safety stories, and i set up a Claude agent that checks my landing page, live. the thesis: they sell the shovels. we build. the practical: one command set up a Claude Managed Agent that opens my landing page, follows every button and tells me in Slack what's broken. first real run: about 90 seconds, 21 cents against a $5 cap, three problems found. this version finds and proposes only - the "say yes and it fixes it" step is next. i also tried GPT-6.1 Sol Ultrafast on a real task while filming: it sat for about 10 seconds, then worked for 9m 57s. that is one run, not a benchmark. try it: run "claude update", then give Claude Code this: /claude-api managed-agents-onboard https://claude.dev/blog/building-effective-agent-automations/ thanks to today's sponsor, my software Threadify - your lead generation agent for Threads: https://www.threadify.app/home?utm_source=youtube&utm_medium=video&utm_campaign=lab-0018&utm_content=sponsor links OpenAI Devs: GPT-6.1 Sol Ultrafast: https://x.com/OpenAIDevs/status/2108262812489531498 Tibo: day 4, instant steering: https://x.com/thsottiaux/status/2108275041276420573 Claude: Dashboards and Motion: https://x.com/claudeai/status/2108271552991252810 Claude Devs: automations with Claude Managed Agents: https://x.com/ClaudeDevs/status/2108320296323477683 Claude guide: building effective agent automations: https://claude.dev/blog/building-effective-agent-automations/ Anvisha: Voyager: https://x.com/anvisha/status/2108252061209088159 Firecrawl: Universal Scrape: https://x.com/firecrawl/status/2108225206141518107 Jane Manchun Wong on Anthropic's usage policy: https://x.com/wongmjane/status/2108266310492917916 Mikita Balesni: the letter: https://x.com/balesni/status/2108262814003687745 Jasmine Wang: https://x.com/j_asminewang/status/2108263312291180680 OpenAI Newsroom: the reply: https://x.com/OpenAINewsroom/status/2108441580806025712 want to sponsor a future episode of the LAB? sponsors@lennysaibuilders.com Lenny's AI Builders - the LAB. all the AI news you need, plus something you can actually use, in under 15 minutes. less scrolling. more "oh shit, i could do that". watch the full episode: https://www.youtube.com/watch?v=a42FHynrhZs

  3. 4d ago

    Elon's Grok Bot will use Claude | LAB 0017

    Elon says his own bot will use Claude. plus Claude's new Haiku 5.5, monthly API credits for Max plans, GPT-6 in ChatGPT, and i test Haiku 5.5 against GPT-6 Luna on BuilderBench, live. the thesis: competition is great - builders are cashing in. the practical: i ran BuilderBench v3 on Haiku 5.5 and GPT-6 Luna (8 Oct 2026, 4 hours, extra high) and rated every job blind before i knew which model made it. GPT-6 Luna 44.58, Haiku 5.5 39.18 (out of 100, final personal scores, partial evidence). run cost estimates: Luna $1.47 (short-context scenario), Haiku $37.39 (provider-reported). these are API-equivalent estimates, not bills, and the methods differ. one run, my jobs, my taste. try it: pick three jobs you really do, give both models the same brief, and rate the work blind. thanks to today's sponsor, my software Threadify - your lead generation agent for Threads: https://www.threadify.app/home?utm_source=youtube&utm_medium=video&utm_campaign=lab-0017&utm_content=sponsor links Elon on Grok Bot's back-end models: https://x.com/elonmusk/status/2107724314451878104 xAI: Grok Bot now works with X: https://x.ai/news/grok-bot-and-x X API pricing: https://docs.x.com/x-api/getting-started/pricing Claude: introducing Claude Haiku 5.5: https://x.com/claudeai/status/2107894039626277339 Anthropic: Claude Haiku 5.5: https://www.anthropic.com/claude-haiku-5-5 Claude Devs: monthly API credits for Max and Team: https://x.com/ClaudeDevs/status/2107895957933408429 Claude help: monthly API credits: https://support.claude.com/en/articles/17154008-monthly-api-credits-for-max-and-team-plans OpenAI: GPT-6 and Intelligent UI in ChatGPT: https://x.com/OpenAI/status/2107894997538525580 Karpathy: ask for visuals, not text: https://x.com/karpathy/status/2105819303471976479 Tibo: day 3: https://x.com/thsottiaux/status/2107913674593644711 OpenAI help: ChatGPT Pro tiers: https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers Theo: tsc-rs: https://x.com/theo/status/2107789940482621795 tsc-rs repo: https://github.com/pingdotgg/ts-rust want to sponsor a future episode of the LAB? sponsors@lennysaibuilders.com Lenny's AI Builders - the LAB. all the AI news you need, plus something you can actually use, in under 15 minutes. less scrolling. more "oh shit, i could do that". watch the full episode: https://www.youtube.com/watch?v=WZkrVGp-jxE

  4. 5d ago

    OpenAI's rival called their 28 days "nothingburgers" | LAB 0016

    OpenAI promised 28 days of gifts. on day two, poteto - Lauren Tan from the Grok Bot team - called them nothingburgers. there is beef. 76% of almost 75,000 votes on Tibo's poll said day two needed a reset. we got one. my take: build the model, not the calendar. then Claude moves into Google Docs, Sheets and Slides (beta, paid plans), Hark Pro (the Figure founder's personal agent), OpenAI's AI did new maths (with a model we can't use yet), treg vs Clay for lead gen, and Nano Banana 2.1. the practical: the one prompt that makes Claude use every drop of my plan. i had 30% of my weekly usage left. Claude checked it every hour and went from 2 sub-agents to 5. copy the prompt from the video. thanks to today's sponsor, my software Threadify - your lead generation agent for Threads: https://www.threadify.app/home?utm_source=youtube&utm_medium=video&utm_campaign=lab-0016&utm_content=sponsor links poteto: 'is this why your 28 days are full of nothingburgers': https://x.com/poteto/status/2107566574735651107 Tibo: roundup of day 2: https://x.com/thsottiaux/status/2107575657014468879 Claude: now inside Google Docs, Sheets and Slides: https://x.com/claudeai/status/2107522596845822135 Claude help: use Claude in Google Docs, Sheets and Slides: https://support.claude.com/en/articles/16951679-use-claude-in-google-docs-sheets-and-slides Brett Adcock: Hark Pro: https://x.com/adcock_brett/status/2107504425451536822 Hark: https://hark.com/ OpenAI: new mathematical results: https://x.com/OpenAI/status/2107596713791767021 OpenAI: sharing AI progress in mathematics: https://openai.com/index/sharing-ai-progress-in-mathematics/ github.com/openai/math: https://github.com/openai/math Jason Zhou: treg: https://x.com/jasonzhou1993/status/2107423956395589784 treg people search: https://treg.to/people-search Nano Banana 2.1: https://x.com/NanoBanana/status/2107521202466046453 my usage prompt on Threads: https://www.threads.com/share/_s-Z4_Bvq/ Lenny's AI Builders - the LAB. all the AI news you need, plus something you can actually use, in under 15 minutes. less scrolling. more "oh shit, i could do that". watch the full episode: https://www.youtube.com/watch?v=E7RqRgxmP4g

  5. 5d ago

    Claude gives you 5x more than ChatGPT (now it's measured) | LAB 0015

    Claude gives you about 5x more for your money than OpenAI. that's not my maths - SemiAnalysis measured it. they ran the same jobs on every big AI plan and watched the usage bars. on the $200 plans, Leo's screenshot of their data shows 28.6 billion tokens of Opus 5.5 vs 10.2 billion of GPT-6.1 Sol. that's 2.8x the raw tokens, and about 5x the value at API prices. one lab even gave 1 of 3 identical subscriptions 20% lower limits. so know what you're paying for. we deserve to know. then OpenAI's 28 days of gifts (my take: an advent calendar for people who just lost half their limits), HyperFrames Studio (a video editor for agents), Beam (a giant open model you can't run), ChatGPT's new plugin store, and why only 4.5% of people pay for AI. the practical: i ran Matt Pocock's new /retro skill on the session where my agent edited the last episode 25+ times. it found 6 problems, live, on camera. try this (make your agent review itself): 1. give your agent this link and say "install this repository of skills": github.com/mattpocock/skills 2. pick one session that felt slow or messy. 3. in that session, type /retro and hit enter. 4. read the list, worst first. approve the fixes you agree with. sponsor: Threadify, my lead generation agent for Threads. get started: https://www.threadify.app/home?utm_source=youtube&utm_medium=video&utm_campaign=lab-0015&utm_content=sponsor sources SemiAnalysis: Anthropic subscriptions offer 5x+ more value than OpenAI: https://newsletter.semianalysis.com/p/anthropic-subscriptions-offer-5x SemiAnalysis on X: https://x.com/SemiAnalysis_/status/2107204965710053510 Leo (@synthwavedd): tokens by plan: https://x.com/synthwavedd/status/2107206085656580277 OpenAI: ChatGPT Pro tiers (20x to 10x): https://help.openai.com/en/articles/9793128-about-chatgpt-pro-tiers Tibo: 28 days: https://x.com/thsottiaux/status/2106845241357824205 Tibo: day 1, about 50% faster: https://x.com/thsottiaux/status/2107158998495748264 HyperFrames Studio: https://www.hyperframes.dev/studio Reflection AI: introducing Beam: https://reflection.ai/blog/introducing-beam OpenAI: submitting a ChatGPT plugin: https://developers.openai.com/plugins/deploy/submission Pietro Schirano: MagicPath growth: https://x.com/skirano/status/2107236581442720203 a16z: top 100 gen AI consumer apps: https://a16z.com/100-gen-ai-apps-7/ Matt Pocock's skills (v1.3.1, /retro): https://github.com/mattpocock/skills/releases/tag/v1.3.1 5x is SemiAnalysis's measured API-equivalent value (Opus 5.5 vs GPT-6.1 Sol); 2.8x is raw tokens on Leo's screenshot, medium reasoning. Pro goes from 20x to 10x Plus for new subscribers now and existing ones from 30 Oct. the 28 days and "about 50% faster" are Tibo's own posts - no changelog yet. i haven't tried HyperFrames Studio. Beam's weights aren't out and its scores are self-reported; 250 GB is our estimate. 2,000% is MagicPath's own claim. a16z: US paid personal subscriptions, August 2026. Lenny's AI Builders - LAB 0015 watch the full episode: https://youtu.be/ExiN_qOGCbs

  6. 6d ago

    Codex usage resets are a casino - plus GPT-6.1 Sol on BuilderBench | LAB 0014

    i think the AI companies built a casino. OpenAI keeps refilling everyone's Codex usage at random. one tracker has counted 58 resets. people bet real money on Polymarket on how many come each week. then a reset promised for 10am landed about four hours late - after one guy burned his last 30% so he wouldn't lose it. so i break down the dark psychology behind it: Skinner's pigeons from the book Hooked, why the wait is the hook, and why losing hurts more than winning feels good. it's probably not that deep. but i don't think you get that big without thinking about this stuff. then i put GPT-6.1 Sol through BuilderBench - my own bench, 4 hours of real work. the score's at the end. also in this one: David Ondrej says Claude Code gives you 16-24x the usage of Codex (his maths). the Pope vs AI art. Apple vs every AI agent. Hinton says the intelligence explosion may be close. and Theo vs BridgeMind. try this prompt (queue it, then walk away): this job will take hours. work until it's done. 1. here is what done looks like: [your checklist]. 2. don't stop to ask me things. if you're stuck, write down why and move to the next part. 3. check your own work against the checklist before you finish. 4. when you finish, build me one review page: what you made, what you couldn't finish, what you need from me. i'll be back in 4 hours. sponsor: Threadify, my lead generation agent for Threads. get started: https://www.threadify.app/home?utm_source=youtube&utm_medium=video&utm_campaign=lab-0014&utm_content=sponsor sources Polymarket: how many Codex resets, week of Sep 28: https://polymarket.com/event/how-many-codex-resets-week-of-september-28 Will Codex Reset? (reset tracker): https://willreset.com/ Tibo: reset landing 10am PST: https://x.com/thsottiaux/status/2105843926221660585 Tibo: reset all propagated: https://x.com/thsottiaux/status/2106131810921136451 the 30% post: https://x.com/_architected/status/2106083508267724809 OpenAI: how banked Codex resets work: https://help.openai.com/en/articles/20001498-how-banked-codex-resets-work David Ondrej: Claude Code vs Codex usage: https://x.com/DavidOndrej1/status/2105890409692143826 Pope Leo XIV on AI art: https://x.com/Pontifex/status/2105983638147891490 Dan Shipper: category error: https://x.com/danshipper/status/2105995764765962520 Federico Viticci: this is concerning: https://x.com/viticci/status/2106145751537791322 MacStories: Apple's new Full Disk Access controls: https://www.macstories.net/linked/apple-announces-plan-to-impose-new-full-disk-access-controls-on-mac-developers/ Geoffrey Hinton on the intelligence explosion: https://x.com/geoffreyhinton/status/2106122709285368061 CASP: what if automating AI R&D triggers an intelligence explosion?: https://casp.ac/reports/intelligence-explosion Theo on NerfBench: https://x.com/theo/status/2106193108409123200 BridgeMind's reply: https://x.com/bridgemindai/status/2106146873409155405 BridgeMind: how NerfBench works: https://bridgebench.ai/blog/how-nerf-bench-works BuilderBench scores are my own ratings of real work. the $14.71 task cost is an API-equivalent estimate. GPT-6 Sol (45.5) and Opus 5.5 (68.3) were scored on older versions of the bench - a reference, not a ranking. the 16-24x number is David's own maths, not checked by anyone. resets: the effect is real, the intent is unknown - the casino take is my opinion. Lenny's AI Builders - LAB 0014 watch the full episode: https://youtu.be/urqMfawYIbs

  7. Oct 5

    Fable 5.5 is leaking, and Claude is already pulling away | LAB 0013

    people are asking for Fable 5.1 and getting something smarter back. Anthropic hasn't said a word. so i ran the test myself, in Claude Code. plus Claude Code mods, half-price Claude design, Karpathy on visual outputs, Anthropic's secret dinners (a report), putting your ChatGPT dot in charge, and the practical: i had Claude Code read 8 episodes of my YouTube analytics and it found where you stop watching. watch the full episode: https://youtu.be/nVZf_vim5K4

  8. Oct 3

    ChatGPT wants your whole day - so i let it audit mine | LAB 0012

    ChatGPT wants your whole day. it now takes your meeting notes with no bot on the call. it hosts apps you build with one sentence. so i let GPT-6.1 Sol audit my life and design my ChatGPT Space. it worked for 52m 54s. Claude Opus 5.5 checked the plan over four rounds until it said AGREE. what came out: one "Lennox OS" Space where i capture, plan, start work, review results and find my history. the hookups to my other apps aren't built yet - i show you exactly where it stands. also in this one: Google's Gemini 4 Argon can write 1M tokens in one reply - and only trusted testers can use it. OpenAI's GPT-6.1 Sol. Hormozi's memo on AI budgets. and the White House AI Accord. sponsor: Threadify, my lead generation agent for Threads. start a free trial: https://www.threadify.app/plans?utm_source=lenny-podcast&utm_medium=audio&utm_campaign=lab-0012&utm_content=podcast-description-primary&video_slug=lab-0012&cta_slot=description&entry_angle=sponsor&lp_variant=plans sources Google: Gemini 4 Argon: https://x.com/Google/status/2105388143902175529 Google DeepMind: trusted testers via Fairwind: https://x.com/GoogleDeepMind/status/2105388084154056939 Derrick Choi: ChatGPT Meetings plugin: https://x.com/derrickcchoi/status/2105304132487664041 OpenAI release notes (Meetings beta): https://help.openai.com/en/articles/6825453-chatgpt-release-notes Tibo on GPT-6.1 Sol: https://x.com/thsottiaux/status/2105464274747527543 GPT-6.1 Sol model docs: https://developers.openai.com/api/docs/models/gpt-6.1-sol Claude model overview (Opus 5.5 output limit): https://platform.claude.com/docs/en/about-claude/models/overview Alex Hormozi's AI budget memo: https://x.com/AlexHormozi/status/2105446365119525013 Jensen Huang on the White House AI Accord: https://x.com/JensenHuang/status/2105348324484342238 The Hill: tech CEOs sign White House AI accord: https://thehill.com/homenews/administration/6118906-tech-ceos-sign-white-house-ai-accord/ Reuters via Yahoo: FTC opens AI probe: https://www.yahoo.com/news/politics/articles/ftc-opens-probe-ai-giants-135328719.html Max Stoiber: ChatGPT Sites: https://x.com/mxstbr/status/2105428405571428785 DataCamp: Gemini 4 Argon pricing (reported): https://www.datacamp.com/blog/gemini-4-argon prices and access details marked "reported" come from third parties, not the companies. Lenny's AI Builders - LAB 0012

See All (63)

About

less scrolling. more “oh shit, i could use that” i’m Lennox. five days a week, i dig through AI Twitter, pick the updates worth your time, and bring you one thing i’ve tested myself. what worked, what broke, and what you can try with it. for people making products, content and useful systems with AI. you don’t need to write code to build something worth using. each episode is under 15 minutes. grab the field notes for the prompts, steps and bits to watch out for. this feed also keeps the earlier L E S S O N S episodes from my journey building with AI.

Information

  • Creator
    Lennox Saint
  • Years Active
    2026
  • Episodes
    63
  • Rating
    Explicit
  • Copyright
    © 2026 Lennox Saint
  • Show Website
    Lenny’s AI Builders

You Might Also Like