Lenny’s AI Builders

four Shorts. two of them were made by Claude from one prompt, with my cloned voice and my AI face. pick your two letters in the comments before the reveal. if most of you can't tell, Claude makes every LAB Short for a month. also this week: Codex now keeps your chats cached forever (and why my Claude Max plan kept draining), Anthropic's draft IPO filing ($16.3 billion in revenue, and an $80 billion loss that's mostly paper), Dario's huge reply to his critic, one brain for all your agents with a lock so they stop tripping over each other, and the Grok Bot trick that gives every job its own email address. the practical: how Claude made a Short of me from one prompt for about $12.65: 1. it scrapes Shorts that are beating their channel's average, so the hook comes from what's working right now 2. it writes the script from facts you give it, and learns how you talk from your old captions 3. your voice, from your ElevenLabs clone 4. your face, from HeyGen, synced to that voice 5. it edits it in your Short style, captions and proof on screen 6. it checks it: a screenshot of every beat, fixes what looks off, checks sync and loudness the catch: you need your own voice clone and face set up first, and you still check every fact. the full prompt is in the field notes: https://lennoxsaint.com/lab/0026 links Riley Brown's one-prompt Claude edit: https://x.com/rileybrown/status/2111925755215040779 Theo on Codex keeping chats cached: https://x.com/theo/status/2112713481946570967 WSJ on Anthropic's draft IPO filing: https://x.com/WSJ/status/2112628141814358283 Dario Amodei's reply: https://x.com/darioamodei/status/2112732230124818891 Corey Ganim on one brain for your agents: https://x.com/coreyganim/status/2111490096402677760 the Grok Bot email trick: https://x.com/ManaEngineer/status/2112481479158587884 chapters 0:00 four Shorts, two made by Claude 0:22 Riley Brown's one-prompt Short 1:00 AI is doing more (the catch) 1:20 why my Claude Max plan drained 3:42 Anthropic's revenue: i was wrong 4:52 sponsor: Threadify 6:01 Dario hits back at his critic 7:44 my brain has a library card 9:49 give your Grok Bot its own email 10:58 how Claude made a Short of me for $12.65 12:46 last call: pick your two 13:21 the reveal 14:24 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-0026&utm_content=sponsor&video_slug=lab-0026&cta_slot=youtube_description&entry_angle=voice_brain want to sponsor a future episode? sponsors@lennysaibuilders.com watch the full episode: https://www.youtube.com/watch?v=1Jvl7KxMfwA

What is Lenny’s AI Builders?

less scrolling. more “oh shit, i could use that.”

i’m Lennox. i dig through the AI updates worth your time, then test tools, models and agents on real work. what worked, what broke, and what you can try yourself.

for people making products, content and useful systems with AI. you don’t need to write code to build something worth using. grab the field notes for prompts, steps and the bits to watch out for: https://lennoxsaint.com/lab

this feed also keeps the earlier L E S S O N S episodes from my journey building with AI.