Startups For the Rest of Us Episode 809 | What I Learned Diving into A.I. for 100 Days (with Craig Hewitt)
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Dec 2, 2025 Craig Hewitt, founder of Castos and creator of the '100 Days of AI' YouTube series, shares insights from his deep dive into AI tools for SaaS founders. He reveals surprising takeaways, ranks Claude Code above ChatGPT for developers, and discusses how Manus automates complex tasks. Craig explains the reality of AI agents cutting customer support load in half and his strategies for building new products beyond Castos, including exciting AI experiments. His candid thoughts on motivation and the risks of growth add an engaging layer to the conversation.
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AI Is Amplification, Not Replacement
- AI can automate much work but still needs a human-in-the-loop for ~20% of tasks.
- Craig Hewitt calls the current era 'human augmented' rather than full automation.
Use Agentic Tools For Real Coding
- Use agentic coding tools like Claude Code for production-grade coding workflows.
- Avoid relying on consumer chat interfaces for complex engineering tasks; choose tools that let you add files, context, and integrations.
Choose Manus For Agentic Research Work
- Prefer Manus when you need an agent that can browse, fetch data, and produce deliverables.
- Use Manus to automate market research, briefs, scripts, and reports instead of a basic chat tool.