The Hard Truth About AI Agents: What We Learned Building in Open Source(alexchao.substack.com)
alexchao.substack.com
The Hard Truth About AI Agents: What We Learned Building in Open Source
https://alexchao.substack.com/p/the-hard-truth-about-ai-agents-what
From our times building Semantic Kernel, Autogen, and GraphRAG at Microsoft, we offer a retrospective on the evolution of this space and where we think it'll go in 2026 and beyond.
We dive into how AI systems are actually being built today, why early agent frameworks were brittle, and what’s changing as models, tooling, and abstractions improve. Eric shares insights from hands-on experience building AI systems, including lessons around memory, orchestration, open source, and why building has become dramatically faster than even a few years ago.
We also talk about the human side of all this—how builders should think about careers in AI, avoiding burnout, and navigating a fast-moving field without getting overwhelmed.
Whether you’re an AI engineer, founder, researcher, or just curious about where things are headed, this conversation goes deep into the why behind modern AI systems.
Find the podcast on:
YouTube: https://youtu.be/9FqByZJrTN8
Spotify: https://creators.spotify.com/pod/profile/alex-chao/episodes/...
Apple Podcasts: https://podcasts.apple.com/au/podcast/the-hard-truth-about-a...
How are you building AI agents in 2026? Are you still using a framework?