{"title":"Model Evolution: Managing LLM Version Updates","region":"Global","category":"Reliability","description":"Preventing subtle behavior breaks when underlying AI models are updated.","lastUpdated":"2026-02-23","steps":["Pin specific model versions instead of using latest tags.","Run a baseline benchmark after every provider update.","Monitor output variance for existing system prompts.","Use a dual-model strategy for critical reasoning.","Log model-provider headers for historical debugging."],"url":"https://checklist.day/agent-model-versioning"}