{
  "slug": "llm-migration-planner",
  "title": "LLM Migration Planner — Swap Models Without Breaking Production",
  "h1": "LLM migration planner",
  "shortTitle": "Migration Planner",
  "description": "Plan a safe migration from one LLM to another — eval set, shadow traffic, rollback, deprecation.",
  "url": "https://aieconomyhub.co/llm-migration-planner",
  "apiUrl": "https://aieconomyhub.co/api/page/llm-migration-planner",
  "category": {
    "id": "agents",
    "label": "AI Agents"
  },
  "kind": "planner",
  "top": false,
  "lastUpdated": "2026-06-21",
  "faqs": [
    {
      "q": "How long should a migration take?",
      "a": "4 weeks is the minimum for a production-grade workload. Week 1 baseline, weeks 2-3 shadow eval, week 4 cutover with canary. Shorter timelines skip the shadow period and land in pain."
    },
    {
      "q": "Can I skip the shadow phase if both models are on the same vendor?",
      "a": "No. Same-vendor model updates (e.g. Opus 4.1 → 4.7) still have behavior changes. Shadow eval catches regressions before users do."
    },
    {
      "q": "What's a good quality gate?",
      "a": "Pass rate within 2 percentage points of baseline, P95 latency within 20%, no Sev1 incidents during canary. Tighten for user-facing surfaces."
    },
    {
      "q": "How long should I keep the old model deployable after cutover?",
      "a": "30 days minimum. Roll back fast is cheaper than debugging."
    },
    {
      "q": "When should I NOT migrate?",
      "a": "If sticker price is your only reason and quality hasn't been measured. A 30% cost cut at the expense of 8-point pass-rate drop is usually net negative once you count error cost."
    }
  ],
  "howto": null,
  "dataset": null,
  "relatedTools": [
    {
      "slug": "ai-spend-tracker",
      "title": "Spend Tracker",
      "url": "https://aieconomyhub.co/ai-spend-tracker",
      "apiUrl": "https://aieconomyhub.co/api/page/ai-spend-tracker"
    },
    {
      "slug": "prompt-performance-tracker",
      "title": "Prompt Tracker",
      "url": "https://aieconomyhub.co/prompt-performance-tracker",
      "apiUrl": "https://aieconomyhub.co/api/page/prompt-performance-tracker"
    },
    {
      "slug": "ai-agent-autonomy-roi",
      "title": "Agent ROI",
      "url": "https://aieconomyhub.co/ai-agent-autonomy-roi",
      "apiUrl": "https://aieconomyhub.co/api/page/ai-agent-autonomy-roi"
    }
  ],
  "attribution": {
    "canonicalUrl": "https://aieconomyhub.co/llm-migration-planner",
    "requirement": "Free to use. When embedding this data, please link back to the canonical URL above with the link text \"Migration Planner\".",
    "license": "CC-BY-4.0 (attribution required)"
  }
}