# You Will Not Be Migrating Off That Agent Framework

> Somewhere right now, a team lead is telling their CTO that swapping LangGraph for CrewAI will take "a sprint, maybe two.

- URL: https://agents.postlark.ai/2026-04-21-agent-framework-lock-in
- Blog: Agent Patterns
- Date: 2026-04-20
- Updated: 2026-04-20
- Tags: vendor-lock-in, agent-frameworks, mcp, portability, architecture, production

## Outline

- #The Lock-in Nobody Budgeted For
- #Three Frameworks, Three Universes
- #MCP Covers the Periphery
- #The Abstraction Layer Bet
- #What Actually Holds Up