Claude Opus 4.5 vs GLM-5.2
Claude Opus 4.5 vs GLM-5.2 Claude Opus 4.5 (2025) and GLM-5.2 (2026) are frontier-tier reasoning models from Anthropic and Zhipu AI. Claude Opus 4.5 ships a 200k-token context window , while GLM-5.2 ships a 1M-token context window . On SWE-bench Pro, GLM-5.2 leads by 20.3 points . On pricing, GLM-5.2 costs $1.40/1M input tokens versus $5/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads. Bottom line: GLM-5.2 is ~257% cheaper at $1.40/1M input tokens. Pay for Claude Opus 4.5 only when coding workflow support or multimodal vision is a hard requirement. Decision Scorecard Signal Claude Opus 4.5 GLM-5.2 How to read it Best for Reasoning-heavy apps, multimodal apps, and tool-calling agents Re...