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by Zhipu AI

Z.ai: GLM 5.3 Flash.

multimodal open weights 1.3M ctx
Cheapest input
$0.075/M
on OpenRouter
Cheapest output
$0.25/M
on OpenRouter
Hosted equiv.
~$0.09/hr
@ 100 tok/s on OpenRouter

GLM-5.3-Flash is a native multimodal model from Z.ai. It is suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while...

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
OpenRouter api aggregator $0.075 $0.25 Launch ↗
Together AI hosted inference $0.15 $0.5 Launch ↗
DeepInfra hosted inference $0.15 $0.5 Launch ↗
Sources

Official references.

Hugging Face ↗
FAQ

Frequently asked.

How do I run Z.ai: GLM 5.3 Flash?
Z.ai: GLM 5.3 Flash is open-weight, so you can self-host on rented GPUs. See the Run It Yourself tab for GPU configurations + cost estimates, or use one of the hosted inference providers listed on this page.
Where can I access Z.ai: GLM 5.3 Flash?
Z.ai: GLM 5.3 Flash is available via Together AI, DeepInfra, OpenRouter, z.ai. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run Z.ai: GLM 5.3 Flash?
API pricing starts at $0.075/M input tokens and $0.25/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is Z.ai: GLM 5.3 Flash open-source or proprietary?
Z.ai: GLM 5.3 Flash is open-weight under the license. You can download and self-host it.