How are devs using AI tools at Big Tech and startups, and what do they actually think of them? This was the topic of my annual conference talk, in June 2025, in London, at LDX3 by LeadDev. To research, I talked with devs at: * AI dev tools startups:Anthropic, Cursor, Windsurf * Big Tech: Google and Amazon * AI startups: incident.io and a biotech AI startup * Vendor-independent software engineers: Kent Beck, Birgitta Boeckeler, Simon Willison, Armin Ronacher and Peter Steinberger, The reco