What is GLM 4.5 Flash?

GLM 4.5 Flash is a model from Z.ai, released on Jul 28, 2025. GLM 4 5 Flash is a Z.ai GLM model for agentic reasoning, coding, tool use, and general language tasks.

How much does GLM 4.5 Flash cost?

On the Respan gateway, input starts at $0.00 per 1M tokens on Z.ai, and output starts at $0.00 per 1M tokens on Z.ai, after gateway discounts.

Which providers serve GLM 4.5 Flash on Respan?

GLM 4.5 Flash is served by Z.ai.

What is GLM 4.5 Flash's context window?

GLM 4.5 Flash accepts up to 200K tokens of context.

How do I use GLM 4.5 Flash with the Respan gateway?

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "zai/glm-4.5-flash". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

How fast is GLM 4.5 Flash?

Over the last 30 days of requests through the Respan gateway, the fastest provider was Z.ai at 23 tokens per second, and the lowest response latency was 0.1 seconds on Z.ai. Speed varies with request size and provider.