GLM-5.2 is the new top open-source coding model, and it's genuinely competitive. It beats GPT-5.5 on multiple long-horizon coding benchmarks for 1/6th the cost, and builders are reporting that it feels more reliable than the hype suggests. This isn't about open-source
eventually catching up — it's about open-source being a credible choice
right now for production work. That changes the economics for anyone building AI-native tools.