I switched from OpenAI to z.ai for codiai coding review ng and I'm genuinely happy with it — honest review

I've been using z.ai for about three months now. Here's what I've learned. What z.ai is z.ai (by Zhipu AI) offers a subscription-based API for their GLM models. The selling point: flat monthly pricing instead of per-token billing. You pay 8/mo (Lite), 2/mo (Pro), or 60/mo (Max), and you get API access to their coding models. The current flagship is GLM-5.1. It's the #1 open-source model and #3 globally on LMArena Code, reportedly on par with Claude Opus 4.6. Why I signed u...