Inside Silicon Valley’s Love-Hate Relationship With Anthropic

From Forbes Daily Briefing · 7:12

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In 2025, when AI startup Spellbook signed a long-term deal with Anthropic to use its models to review legal contracts, CEO Scott Stevenson wasn’t worried about the AI giant coming for his lunch. Anthropic staffers told him explicitly they didn’t see the firm directly competing with Spellbook in the legal space, he recalls. A year later, he was caught off guard when Anthropic informed him that it was launching Claude for Legal. The tool, tailored for law firms, has dozens of capabilities ranging from contract review to citation checking to tracking regulatory changes — many of which overlap with Spellbook. That made things, “a little bit awkward,” Stenvenson says. He decided to be more cautious sharing data and product roadmaps with the AI giant. “Anthropic has been a great partner but it made us realize that they are a massive company and two parts of the org can have conflicting mandates,” he says. “Ultimately this is inevitable.” Up until recently, Spellbook used Claude to carry out over 500,000 monthly contract reviews for its customers, but it’s now moved a lot of its spend to OpenAI. Read the full story on Forbes: https://www.forbes.com/sites/rashishrivastava/2026/11/02/inside-silicon-valleys-love-hate-relationship-with-anthropic/ Learn more about your ad choices. Visit megaphone.fm/adchoices

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