Lesson 1786 of 2116
AI Model Families: Pin Models, Watch Deprecations, and Plan Migrations
Frontier providers deprecate and silently update models; pin versions, monitor announcements, and run pre-migration evals so an upgrade does not become an outage.
Lesson map
What this lesson covers
Learning path
The main moves in order
- 1The premise
- 2model pinning
- 3deprecation
- 4regression eval
Concept cluster
Terms to connect while reading
Section 1
The premise
A model the provider considers a minor update can change behavior on your tasks materially; pinning versions and running evals on every announced update is the only way to control the change.
What AI does well here
- Pin to specific versioned model IDs
- Subscribe to deprecation announcements per provider
- Run regression evals on every announced version
- Plan migration windows before the EOL date
What AI cannot do
- Stop providers from deprecating
- Predict surprise behavior changes between versions
- Replace a real eval before the cutover
Key terms in this lesson
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