You Can't Test Your AI Agent. None of the SDKs Care.
Three agent SDKs shipped in April 2026. All three let you build agents. None let you test them. The non-determinism problem nobody wants to solve — and what to do about it right now.
Four AI Coding Tools Shipped Parallel Agents. None Solved git merge.
Cursor, GitHub Copilot, Claude Code, and OpenAI Codex each use a different branch isolation strategy for parallel agents — worktrees, last-write-wins, session isolation, sandboxed VMs. All four defer the merge problem to you. A deep dive into the git-level mechanics and why the real bottleneck moved from writing code to merging it.
The OpenAI Rewrite Tax: Five APIs in Three Years
OpenAI's real cost isn't tokens — it's rebuilding your product every year as each new SDK quietly orphans the last one.
SWE-bench Is Dead. Here's What Your AI Coding Tool Actually Competes On.
10,000 developers confirm benchmark scores don't predict satisfaction. The real differentiator — context strategy — has no leaderboard at all.
Your IDE Isn't a Text Editor Anymore — It's a Knowledge Monopoly Over Your Own Code
Coding tools shifted from autocomplete to full-repo indexing. Now your IDE holds a map of your entire codebase — and switching costs are real.