by Zhipu AI

Z.ai: GLM 5.3 Flash.

multimodal closed 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...

Hosted API only

No self-host path — closed weights.

Z.ai: GLM 5.3 Flash's weights aren't published. Use it via the access providers below.

Where to use it

Cheapest hosted endpoints.

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

Frequently asked.

How do I run Z.ai: GLM 5.3 Flash?
Z.ai: GLM 5.3 Flash is a closed-source API model. The cheapest way to access it is through the API providers listed on this page (direct API, aggregators, and hosted chat UIs).
Where can I access Z.ai: GLM 5.3 Flash?
Z.ai: GLM 5.3 Flash is available via 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 a proprietary model from Zhipu AI. Access is API-only — there are no public weights to download.