How much does MERN AI integration cost in 2026?

Discovery and proof of concept runs $12,000 to $20,000 over two to three weeks. A production MERN RAG chatbot runs $30,000 to $60,000 over eight to twelve weeks. A full agentic AI system with multi-tool orchestration runs $80,000 to $300,000 over sixteen to twenty-four weeks. Ongoing dedicated AI engineer engagements start at $3,200 per month. All figures are billed on milestones with NDA signed before scoping.