Model Deprecation Migration Planner
Plan your LLM migration before sunset
📚 Learn more — how it works, FAQ & guide Click to expand
Learn more — how it works, FAQ & guide
Click to expand
Model deprecation migration planner
Plan your LLM migration. Sunset dates, cost delta, step-by-step checklist.
How to use this tool
- 1
Pick your current model
See the planned sunset date.
- 2
Pick migration target
See cost delta + compatibility.
- 3
Get migration checklist
Testing, gradual rollout, rollback plan.
Frequently Asked Questions
Where does deprecation data come from?
Provider announcements + historical deprecation patterns. OpenAI gives 6-12 months notice typically. Anthropic: similar. This tool shows currently-announced dates as of Jan 2026. Always verify on provider status pages.
How disruptive are migrations?
Usually moderate. Output style changes. Prompt that was perfect for one model often needs re-tuning. Budget: 1-2 engineering weeks for production systems + eval harness run + gradual rollout.
Should I always upgrade?
No — check cost, quality, and deprecation horizon. Sometimes staying on "legacy" (pre-deprecation) until sunset is right. Don't migrate just because something new exists.
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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.