Available on request
GLM API
for coding agents that run for hours.
Z.ai built GLM-5.3 as a reasoning model for coding and long-horizon agentic tasks. If that is the job, tell us your expected volume and we’ll talk through adding GLM to the Xinference Model API.
What “long-horizon” means
Built for tasks with many steps, not one answer
A coding agent might read a repository, plan a change, edit ten files, run the tests and fix what breaks. GLM-5.3 is aimed at that kind of work, where the model has to keep its plan straight across many turns and tool calls.
| Detail | GLM-5.3 |
|---|---|
| Maker | Z.ai |
| Parameters | About 753B |
| Context window | 1,048,576 tokens Model maker’s figure |
| Abilities | Chat, tool calling and reasoning |
| Licence | GLM-5.3 License: permissive, with a security review by Z.ai only for model-as-a-service businesses with more than US$10B in yearly revenue |
Sources: Z.ai’s GLM-5.3 model card and licence, checked 23 October 2026. GLM, Z.ai and the Z.ai logo are trademarks of Z.ai, shown only to identify the model. Their use does not imply endorsement.
When the input is an image
GLM-4.5V for screenshots and documents
Vision plus reasoning
GLM-4.5V reads images and reasons over them, and supports tool calls.
About 106B, 12B active
It is built on GLM-4.5-Air, a Mixture-of-Experts model, and is released under the MIT licence.
The lighter option
GLM-5.3-Flash: multimodal, 18B active
GLM-5.3-Flash is the first natively multimodal model in the GLM-5 series. It has 320B parameters in total with 18B active, and combines sparse and linear attention to cut the cost of serving long contexts. Reasoning effort can be set to low, high or max per request. It is released under the MIT licence, and was the third most-used model on OpenRouter in the 30 days to 22 October 2026.
Source: Z.ai’s GLM-5.3-Flash model card, checked 23 October 2026; usage from OpenRouter’s public rankings.
GLM API questions
Can I use GLM-5.3 commercially?
Yes. The GLM-5.3 License permits commercial use, modification and redistribution. The one extra condition applies only to companies running a model-as-a-service business with more than US$10B in yearly revenue, which must pass Z.ai’s security review first.
Is GLM good for coding?
Z.ai describes GLM-5.3 as a reasoning model for coding and long-horizon agentic tasks. As with any model, test it on your own repository and tasks before you commit.
Is GLM available on the Xinference Model API?
On request. The standard models with public per-token pricing are Kimi K3 and DeepSeek V4.1 Flash. For GLM, talk to us about the version and volume you need.
Who makes GLM?
GLM models are made by Z.ai, which publishes the weights on Hugging Face under the zai-org account.
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