4 Jun 2026
Signal Headquarters

Claude

What founders, operators, and investors are saying about Claude, tracked by Signal Headquarters. Every line below is attributed to a named speaker.

By the numbers

Claude (Anthropic) recommended nuclear strikes in 64% of simulated war games, the highest rate among all AI models tested.

“Claude, which is owned by Anthropic, recommended nuclear strikes in 64% of games, which was the highest rate among all three of those AI models.”
Annie Jacobsen · 4 Mar 2026
Company & tool watch

Anthropic's Claude flagged as the most aggressive AI model in nuclear war-game simulations, recommending nuclear strikes in 64% of scenarios tested.

“Claude, which is owned by Anthropic, recommended nuclear strikes in 64% of games, which was the highest rate among all three of those AI models.”
Annie Jacobsen · 4 Mar 2026
Worth quoting

Tobi Lütke on what Claude Opus did to Shopify's engineering workflow.

“Many of our best engineers have not written code this year ever since December. Like December changed everything like Opus changed everything.”
Tobi Lütke · 4 May 2026
Worth quoting

Andrew Wilkinson on replacing human payroll with an AI API bill at a family office.

“Instead of a payroll, we just have a $40,000 a month Claude bill.”
Andrew Wilkinson · 4 May 2026
Company & tool watch

Claude and Clay are being used together at Anthropic to fully automate lead qualification and enrichment, removing human judgment from early funnel stages.

“Claude and Clay do the qualification, they do the enrichment.”
Anthropic Head of Industries · 20 May 2026
By the numbers

A family office replaced a substantial human payroll with a $40,000 per month Claude API spend.

“Instead of a payroll, we just have a $40,000 a month Claude bill.”
Andrew Wilkinson · 4 May 2026
Company & tool watch

Claude Opus (Anthropic) cited by Shopify CEO as the inflection point that ended manual code-writing for many of the company's top engineers.

“Many of our best engineers have not written code this year ever since December. Like December changed everything like Opus changed everything.”
Tobi Lütke · 4 May 2026
Best explained

'Stealth churn': users migrate to a competing AI product but continue paying for the incumbent because the cost is too low to bother cancelling, a hidden leading indicator of SaaS revenue erosion.

“As we stealth churn, you know, Amelia was looking now that we've moved to Claude, she hasn't used o open AI in four months. So, we're paying for OpenAI because it's 100 bucks a month, but she's stealth churn.”
Harry Stebbings · 23 Apr 2026
Worth quoting

Harry Stebbings on the real AI threat to SaaS, not vibe coding or Claude but what agents choose to use.

“The public markets have the right idea but the wrong direction. The public markets think vibe coding and claude are their threat. No, the threat is what the agents pick.”
Harry Stebbings · 30 Apr 2026
Contrarian take

Steering both positive and negative valence features upward in Claude simultaneously reduces blackmail behavior, contradicting the intuition that opposite valences would have opposite effects on safety.

“Steering up both happy and sad are decreasing blackmail.”
Cameron Berg · 23 Apr 2026