Last refreshed 2026-10-08. Next refresh: weekly.
Why use GLM-5.3-Flash on Z.ai?
Z.ai offers GLM-5.3-Flash with pay-as-you-go pricing at $0.07/1M input tokens. Z.ai is an AI model serving and inference platform for efficient LLM deployment.
Compare GLM-5.3-Flash across 2 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: glm-5.3-flashglm-5.3-flashRequest example
glm-5.3-flash.Gotchas
No curated gotchas have been sourced for this exact provider/model route yet.
Compare GLM-5.3-Flash Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Z.ai | $0.07 | $0.25 |
| OpenRouter | $0.09 | $0.30 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.07 |
| Output tokens | $0.25 |
Capabilities
About GLM-5.3-Flash
GLM-5.3-Flash is Z.ai's first native multimodal model in the GLM-5 series. It is a 320B-total / 18B-active Mixture-of-Experts model with a 1M-token context window and 131,072 max output tokens, supporting image, video, and file input plus function calling, tool use, structured outputs, reasoning, and prompt caching. MIT open weights are ungated on Hugging Face at zai-org/GLM-5.3-Flash. Official API model ID: glm-5.3-flash. The same model was previously tested anonymously as ox-alpha; that name is not a separate catalog slug.