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Also see https://news.ycombinator.com/item?id=47169757 https://news.ycombinator.com/item?id=47169757 - “What Claude Code chooses” 611 points | 8 days ago | 258

• scalefirst 8mo ago
  Appreciate it. SurvivalIndex is agnostic to LLM or coding agent. One of the more interesting findings when you run the same prompts across Claude, GPT, and Copilot is that tool selection diverges significantly by model. Claude Code picks Drizzle for ORM in JS at 100% on Opus, while Sonnet still defaults to Prisma at 79%. Older models route to Redis for caching, newer models increasingly go Custom/DIY. The "recency gradient" shows up clearly — newer models pick newer tools, sometimes before the ecosystem has validated them. This matters because a tool's survival score shouldn't be measured against one agent. A tool that only one model knows about has a structural awareness problem. A tool three models independently converge on has something real.