Uploaded August 2026 | Updated September 2026, 2 weeks ago
Prompt debt is hard to see until it's slowing everything down, but Drew Breunig has a practical audit to surface it. He tracks how often prompts change, flags ones locked to a single editor, runs them through an LLM to check for repeated instructions and overspecification, and then looks at model usage, because teams still running 70% of their inference calls on a two-year-old model are a reliable sign that nobody can afford to migrate.
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Prompt debt is hard to see until it's slowing everything down, but Drew Breunig has a practical audit to surface it. He tracks how often prompts change, flags ones locked to a single editor, runs them through an LLM to check for repeated instructions and overspecification, and then looks at model usage, because teams still running 70% of their inference calls on a two-year-old model are a reliable sign that nobody can afford to migrate.
Follow O'Reilly on:
LinkedIn: linkedin.com/company/oreilly
Facebook: facebook.com/OReilly
Instagram: instagram.com/oreillymedia
BlueSky: https://bsky.app/profile/oreilly.bsky.social
TikTok: tiktok.com/@oreillymedia
