Lenny’s AI Builders

Claude now runs a whole team of agents - so i pointed four of them at my own landing page. it scored 46/100 on Google's speed test (Lighthouse, mobile). i gave them one prompt - Voxyz's "20 things that slow your site down" - in the new Claude Code desktop app, and let them fix it in one pass. the result: on a copy of the site with every fix, measured side by side with an untouched copy (which scored 48), 48 → 86 (median of 5 runs each). the phone freeze went from about 4 seconds to 55 ms and the page got 69% lighter (2.3 MB → 0.7 MB). the live site still scores 46 until my teammate Sam ships the fix - that's his call. 86 is the fixed copy, not the live site yet. check the live score yourself: https://pagespeed.web.dev/analysis?url=https%3A%2F%2Fwww.threadify.app%2Fhome the prompt (credit @Voxyz_ai): https://x.com/Voxyz_ai/status/2110083153930920113 also: the Claude Code desktop app runs lots of agents side by side, Grok Voice 3.0 tops Artificial Analysis's speech-to-speech index (86.9 vs GPT-Live-1's 83.2), Grok Bot opens a connector store and adds plus-aliases, an investor says Grok Bot caught mistakes his accountant missed (his own account - he also invests in Magnetic Tax), Elicit's CEO thinks AI cyberattacks on infrastructure are plausible within a year (his opinion), and Claude Code now compacts idle sessions so coming back costs less. chapters 0:00 my website scored 46 0:14 Claude Code's desktop app runs your agents 2:02 this is the LAB 2:18 anthropic is so far ahead 2:31 Grok Voice 3.0 tops the voice board 4:55 Grok Bot opens its connector store 6:27 sponsor: Threadify 7:17 Grok Bot checked his accountant 8:25 Elicit's CEO: AI cyberattacks within a year 9:33 Claude Code stops torching idle sessions 10:58 Tibo's day 10: another Codex reset 11:31 one prompt, four agents, a faster site 13:31 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-0022&utm_content=sponsor want to sponsor a future episode? sponsors@lennysaibuilders.com watch the full episode: https://www.youtube.com/watch?v=LLxQuQUhAQg

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.