Z.ai: GLM 4.5 API
A flagship ARC (Agentic, Reasoning, Coding) model featuring 355B total parameters (32B active) via MoE architecture. It natively fuses thinking and tool-use, optimized for autonomous software engineering, complex multi-step reasoning, and real-time agentic workflows.
- Context window: 131,072 tokens
- Max output: 98,304 tokens
- Input: text, image
- Output: text
- Reasoning: Supported
- Tool calling: Supported
- File input: Supported
- Released: 2025-07-28
- Knowledge cutoff: 2025-05-31
Frequently Asked Questions
What is the context window of GLM 4.5?
GLM 4.5 supports a context window of up to 131,072 tokens.
Does GLM 4.5 support function calling?
Yes. GLM 4.5 supports tool / function calling.
Does GLM 4.5 support reasoning?
Yes. GLM 4.5 is a reasoning-capable model.
What is the knowledge cutoff of GLM 4.5?
The knowledge cutoff of GLM 4.5 is 2025-05-31.