Same model tier on every step kills ROI.
If your planner, worker, and critic all hit a frontier model, your margin dies. Cost architecture; model routing by task criticality: is as important as prompt architecture.
Discuss agent architectures and share learnings with the community.
If your planner, worker, and critic all hit a frontier model, your margin dies. Cost architecture; model routing by task criticality: is as important as prompt architecture.
LangGraph makes state explicit; CrewAI abstracts roles. Neither is 'better'. The choice is whether your team needs inspectable graphs or faster role-based prototyping.
Self-hosted agents trade API convenience for data-plane control. For regulated industries that's not ideology; it's the only architecture legal will sign.
Glue-code automation wins when MCP tools are idempotent and the workflow owns retries, not when you chain hopeful API calls and pray the agent recovers.
Stakeholders ask for 'productivity gains.' The honest metric is bad outputs caught before they ship: encoded judgment, not word count.
Model Context Protocol servers look simple in a tutorial. In enterprise they need auth boundaries, schema versioning, blast-radius limits, and observability. Otherwise they become your next outage.