GLM-5.3
GLM-5.3 is a 753.33B-parameter language model from Z.ai, suited to chat, reasoning and coding workloads. It runs with a 1M-token context window.
Specifications
- Provider
- Z.ai
- Type
- Language model
- Category
- Text
- Parameters
- 753.33B
- Context window
- 1M tokens
- License
- other
- API endpoint
- /v1/chat/completions
- Model ID
- GLM-5.3
About GLM-5.3
GLM-5.3 uses the same base model as GLM-5.2 — every gain comes from post-training. Compared with GLM-5.2, it is much better at complex coding and long-horizon tasks:
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GLM-5.3 API example
Chat completions through the OpenAI-compatible Denizen Blu One API. Point any OpenAI SDK at api.denizenblu.com/v1, set model to GLM-5.3 and send the request.
curl https://api.denizenblu.com/v1/chat/completions \
-H "Authorization: Bearer $DENIZEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "GLM-5.3",
"messages": [{ "role": "user", "content": "Hello, blue world." }]
}'Need keys, streaming or error codes? See the API docs, or try it first in the playground.
Included in every plan
GLM-5.3 is part of the flat-rate catalog, so you never pay per token to use it. Plans differ by usage limits, concurrency and support, not by whether this model is available.
- Explorer$11 a year
- Creator$31 a year
- Professional$51 a year
- Ultimate$101 a year
- EnterpriseContact sales