GLM 4.6 vs GLM 5.2

Choose GLM 4.6 if you want the value pick for open-weight coding agents. Choose GLM 5.2 if you want open-weight coding agents that want a long context.

In our editorial scoring, GLM 5.2 leads in 3 of five dimensions (output quality, agentic ability and reliability), while GLM 4.6 leads in 1. On price, GLM 4.6 runs about $0.82 per 1M tokens (blended) and is open-weight; GLM 5.2 is about $1.61 and open-weight.

The model is half the story — the agent is the other half

The model picks the moves; the agent runs the loop, the tools, and the guardrails. Once you've chosen a model, see which agent gets the most out of it.