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Z.ai

GLM 4.5 Air

A light, fast GLM

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About the model

GLM 4.5 Air is the lightweight member of the GLM lineup, focused on speed and economy. It keeps solid quality on standard tasks (conversations, assistants, text generation and processing) while answering faster and costing less than the larger models. When needed it switches on reasoning for more complex requests, and in normal mode it answers quickly. It follows instructions, is multilingual and handles Russian confidently. It suits a high volume of requests and prototypes where low latency and predictable cost matter.

Strengths

  • High speed and low cost
  • Optional reasoning for complex requests
  • Good adherence to instructions
  • Many languages, including Russian
  • Predictable cost at high volume

Where to use it

  • Chatbots and first-line assistants
  • Bulk request processing
  • Quick prototypes and demos
  • Auto-replies and standard dialogues
  • Text classification and labeling
  • Real-time integration into a product