Z.ai: GLM 4.5

GLM 4.5 is a text-only model from Z.ai with a 131K-token context window and support for tool use and reasoning. It does not accept image or audio input, and structured output support is unconfirmed. The long context and reasoning capability make it suitable for document-heavy workflows, multi-step tasks, and agentic pipelines that rely on tool calls. At $0.60 per million input tokens and $2.20 per million output tokens, the pricing sits in a mid-range tier. Its blended benchmark score of 53.1 comes from only two benchmarks, so comparisons to more thoroughly evaluated models should be made cautiously. Teams looking for a reasoning-capable model with a generous context window at moderate cost may find it worth testing, but buyers who need broad, independently verified performance data should treat it as provisionally shortlisted until coverage improves.