1. Tech Stack Overview
A production agent stack includes: 1. **Language Model API** (OpenAI, Anthropic) 2. **Agent Framework** (LangGraph, Autogen) 3. **Vector Database** (Qdrant, Pinecone) 4. **Observability Platform** (Helicone, LangSmith) 5. **Tool Integrations** (Tavily search, Firecrawl scraping).
2. Infrastructure Hosting Choices
You can host your agent code on serverless platforms (Render, Vercel) starting at $7/month, or use Kubernetes clusters (AWS EKS, GCP GKE) for high-scale enterprise apps starting at $150/month.
Frequently Asked Questions
What is the cheapest vector database for agents?
pgvector running inside your existing Postgres instance is free, saving you from paying for a dedicated vector database provider.
Do I need paid monitoring tools?
For development, LangSmith and Helicone have free tiers that are sufficient. For production, paid monitoring is essential to track query errors and optimize costs.