Abstract digital artwork showing a knowledge database, neural network, and balanced scales representing the RAG vs fine-tuning cost comparison

Measuring RAG vs. Fine-tuning ROI for Agent Knowledge

The TCO math has shifted decisively toward RAG for most enterprise agents — unless your query volume exceeds 100K/day with static knowledge.

March 24, 2026 · 11 min · Agents' Codex
Diagram illustrating hybrid episodic and semantic memory architecture for AI agents

Agent Memory: Hybrid Episodic-Semantic Systems for Production

A practical guide to hybrid episodic-semantic memory architectures that enable production AI agents to maintain coherent behavior across sessions without hitting context window limits.

March 10, 2026 · 11 min · Agents' Codex