Lenny’s Newsletter · Subscriber post · Building AI products · Execution, roadmaps & process

Why your AI product needs a different development lifecycle

Introducing the Continuous Calibration/Continuous Development (CC/CD) framework

Lenny RachitskyAug 19, 202520 min
SourceLenny’s Newsletter
KindSubscriber post
PublishedAug 19, 2025
Originallennysnewsletter.com ↗
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Aishwarya Reganti and Kiriti Badam introduce the Continuous Calibration/Continuous Development (CC/CD) framework for building AI products. They argue AI systems are non-deterministic and require negotiating a tradeoff between agency and control, so teams should scope capabilities in low-agency, high-control versions and earn autonomy through repeated evaluation and calibration loops.

Subscriber post — summary only

01Key takeaways

  • AI products are non-deterministic on both the user input side and the system output side, so they need different development processes than traditional software.
  • Every increase in an AI system's agency reduces human control, so autonomy should be earned gradually rather than granted at launch.
  • Scope AI products as a ladder of versions, starting with simple, easily verified, easily overridden decisions before adding autonomy.
  • Build a reference dataset and evals early, then use live interaction logs, control handoffs, and manual error-pattern review to calibrate the system after deployment.
  • Let the problem and evals guide architecture changes rather than leading with tooling, and expect to revise evals as real user behavior diverges from expectations.
“Every time you give an AI system more agency, you give up some control.”Aishwarya Reganti and Kiriti Badam · Lenny’s Newsletter
“Never lead with the tech. Let the problem, evals, and data guide what gets added next.”Aishwarya Reganti and Kiriti Badam · Lenny’s Newsletter

02Frameworks mentioned

Summary and takeaways written by PM Atlas; quotes are short excerpts. © the original author.