GLM-5.2 Benchmarked Head-to-Head Against Claude Opus 4.8 (Single-Source, Unverified)

LLM Stats·low signal

A June 16 comparison positions Zhipu/Z.ai's GLM-5.2 against Claude Opus 4.8 on coding benchmarks and pricing, continuing GLM-5.x's claim as the strongest all-around open-source line for long-horizon agentic engineering. Reported only via one aggregator with benchmarks I could not independently corroborate, so confidence is low. For builders: worth watching as a potential open-weight Opus alternative if the price/perf delta survives third-party evals.