I've got the founders of Bolt and Lovable coming on the pod next week. You're specifically curious about how they use AI for marketing?
@lennysan
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Training AI Models: Body Awareness and Physical World Capabilities
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"In the early days of @Anthropic, we taught the model, 'Hey, you actually don't have a physical body to operate in the physical world.' But at the same time, it was being trained on data that told the model, 'This is how you set an alarm.' And so the model would get extremely… pic.twitter.com/I9BoZ786s1
— Lenny Rachitsky (@lennysan) 12 février 2025"In the early days of @Anthropic
, we taught the model, 'Hey, you actually don't have a physical body to operate in the physical world.' But at the same time, it was being trained on data that told the model, 'This is how you set an alarm.' And so the model would get extremely -

Y Combinator’s Recent B2B AI Investment Focus
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Where @ycombinator is betting these days based on the three most recent batches: B2B AI
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How to Secure Investor Agreement on Company Valuation
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How did you get investors to agree to an valuation? Impressive.
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15 Most Capital-Efficient Startups: Deel, Benchling, Gusto Lead
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Also, the 15 most capital-efficient. @deel
, @benchling
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The 15 Most Valuable Y Combinator Companies Yet to IPO
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The 15 most valuable @ycombinator companies that have yet to IPO
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B2C Startups Struggle to Scale into Major Companies
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The issue is that very few B2C startups have turned into big companies over the last decade. Doesn't mean more won't, but rate of success has been super super low.
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Y Combinator’s Track Record: 90 Unicorns and Series A Success
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@YCombinator is widely regarded as the most successful startup accelerator in the world and the top choice for world-class entrepreneurs. They've helped incubate more than 90 unicorns, 45% of their companies go on to raise a Series A (higher than the 33% average), and the -

Duolingo’s Internal Handbook Shares Product Building Strategy
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The @duolingo team just published their internal handbook sharing how they build product, hire, experiment, and build a brand around "wholesome and unhinged" Lots of good ideas to borrow/steal for your own team. Check it out: https://
blog.duolingo.com/handbook/ -
Smaller AI models drive down intelligence costs across industries
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Some key takeaways: 1. AI’s rapidly improving capabilities mean that the cost of reasoning and intelligence is dropping. This opens up opportunities to integrate smarter, smaller models into products. Whether you’re building for health care, education, or another industry, think