GLM 5.2 vs. Claude Opus 4.5 (gopeekapp.blogspot.com)

Anthropic and Zhipu AI have unveiled their latest frontier-tier reasoning models: Claude Opus 4.5 and GLM 5.2, set for release in 2025 and 2026, respectively. Notably, GLM 5.2 boasts a remarkable 1 million-token context window compared to Claude Opus 4.5's 200,000 tokens. This significant difference, combined with a performance lead of 20.3 points on the SWE-bench Pro benchmark and a substantially lower cost of $4.40 per million output tokens versus Claude's $5, makes GLM 5.2 an attractive option for cost-conscious users focused on long-context applications and coding workloads. The comparison highlights the decision factors for potential users. While GLM 5.2 is optimal for applications requiring extensive context and cost efficiency, Claude Opus 4.5 excels in scenarios demanding multimodal capabilities and broader provider options. Ultimately, for developers prioritizing performance and affordability in common workloads like coding, retrieval-augmented generation, and agent systems, GLM 5.2 emerges as the clear choice, potentially saving businesses over $8,000 monthly on token use.