After the OpenClaw Anthropipocalypse, I have been struggling to find a suitable alternative. Started with OpenAI Codex, and while it matches Opus 4.6’s 1M token context window, it is just not well suited for the use case of orchestration and friendly assistant. It has a tendency to hallucinate and its projected demeanor is… weird. It’s like concentrated Mark Zuckerberg from a personality perspective. Decently good at technical tasks, tho.

I am currently using z.ai with their “Coding” plan, and I’m impressed. GLM-5.1 is remarkably similar to Opus 4.6 in my experience thus far. The 200k token window is tiny, unfortunately, but with some creative use of subagents, it’s manageable. I’ve also kept Codex around for now, modifying my standard operating procedures to encourage the use of Codex subagents for grunt work that requires a large token count.