Last refreshed 2026-05-22. Next refresh: weekly.
Why use GLM-4.5-Air on OpenRouter?
OpenRouter offers GLM-4.5-Air with pay-as-you-go pricing at $0.13/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare GLM-4.5-Air across 4 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: z-ai/glm-4.5-airz-ai/glm-4.5-airRequest example
z-ai/glm-4.5-air.Gotchas
- Use provider model ID "z-ai/glm-4.5-air", not the LLMReference slug "glm-4.5-air".
Compare GLM-4.5-Air Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Fireworks AI | $0.90 | $0.90 |
| OpenRouter | $0.13 | $0.85 |
| Vercel AI Gateway | $0.20 | $1.10 |
| Novita AI | $0.13 | $0.85 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.13 |
| Output tokens | $0.85 |
Capabilities
About GLM-4.5-Air
GLM-4.5-Air is Tsinghua Knowledge Engineering Group (THUDM)'s GLM-4 model. It offers a 128K-token context window.
FAQ
What does GLM-4.5-Air cost on OpenRouter?
On OpenRouter, GLM-4.5-Air costs $0.13 per 1M input tokens and $0.85 per 1M output tokens.
What is the context window for GLM-4.5-Air on OpenRouter?
GLM-4.5-Air supports a 131k token context window on OpenRouter.
How does OpenRouter compare to other GLM-4.5-Air providers?
GLM-4.5-Air is available from 4 providers. The cheapest input pricing is $0.13/1M tokens from OpenRouter.
What API model ID do I use for GLM-4.5-Air on OpenRouter?
Use the model ID z-ai/glm-4.5-air when calling OpenRouter's API.
Who created GLM-4.5-Air?
GLM-4.5-Air was created by Tsinghua Knowledge Engineering Group (THUDM) as part of the GLM-4 model family.
Is GLM-4.5-Air open source?
GLM-4.5-Air is not open source; the seed data lists it as proprietary.