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
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Garry Tan's gstack and the rise of AI agent teams

gstack packages 21 Claude Code role configurations as SKILL.md files — and that’s both its strength and its limit.

March 20, 2026 · 11 min · Agents' Codex
Abstract neural network visualization representing distributed expert routing in Mixture of Experts architecture

Mixture of Experts: Expert Parallelism and the New Inference Stack

Sparse MoE architectures have won the LLM scaling race — here is how to actually run them at production scale.

March 17, 2026 · 9 min · Agents' Codex
A browser interface with an AI agent navigating web pages autonomously

Browser Automation Agents: OpenAI's CUA and GUI-Based AI

OpenAI’s Computer-Using Agent (CUA) navigates any website by seeing and reasoning — no DOM, no selectors. This deep dive covers how CUA works, how it compares to Anthropic’s approach and traditional RPA, and where the technology still falls short.

March 13, 2026 · 10 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
Diagnostic dashboard showing categorized failure modes in a multi-agent system

Why Enterprise AI Agents Fail: Understanding the MAST Taxonomy

The MAST taxonomy provides the first systematic framework for diagnosing why enterprise AI agents fail in production IT environments.

March 9, 2026 · 11 min · Agents' Codex
Cover image for: Benchmarking AI Agents in Production: The Metrics That Actually Matter Beyond Accuracy

Benchmarking AI Agents: Metrics That Matter Beyond Accuracy

Accuracy benchmarks built for static LLMs fail completely when applied to AI agents. Here’s the three-layer evaluation framework, four production KPIs, and CI/CD integration patterns that actually work.

March 6, 2026 · 10 min · Agents' Codex
An open wallet with cash bills visible, resting on a wooden surface, representing cost management and budget optimization for LLM infrastructure

Cutting LLM Agent Costs by 50%: A Production Engineer's Playbook

Your LLM bill doesn’t have to scale linearly with usage. This production playbook walks through six battle-tested techniques — from smart model routing to token-efficient RAG — that engineering teams are combining to cut inference spend by 50% or more without degrading quality.

March 5, 2026 · 10 min · Agents' Codex
Two paths diverging: a simple markdown file on one side and a complex server architecture on the other

SKILL.md vs MCP: Declarative Config Beats Protocol Integration

MCP’s USB-C analogy sounds perfect—but the reality involves JSON-RPC servers, stateful sessions, and infrastructure overhead. Here’s why a simple markdown file often beats a protocol-based approach.

March 5, 2026 · 8 min · Agents' Codex
Abstract network of glowing connection points representing protocol-based AI system integration

MCP: Why Every AI Agent Framework Is Racing to Adopt It

How MCP solves the M×N integration problem and why Block, Replit, Zed, and Sourcegraph are betting on Anthropic’s open standard for AI agent interoperability.

March 4, 2026 · 10 min · Agents' Codex