GLM 5.3 - Kyma API

Overview

Zhipu’s newest flagship — coding/agentic upgrade over GLM 5.2. ~1.3M context, open weights.

Specs

Field	Value
Model ID	`glm-5.3`
Best for	Agentic coding, SWE tasks, long-horizon, 1.3M context
Context window	1.31072M
Max output tokens	131K
Input modalities	Text
Output modalities	Text
Tool calling	Yes
Structured outputs	Yes
Prompt caching	Yes
Vision	No
Reasoning	Yes
Speed	Medium
Cost band	Premium
Release stage	Stable

Pricing

	Per 1M tokens
Input	$1.178
Output	$3.702

Example

from openai import OpenAI

client = OpenAI(base_url="https://kymaapi.com/v1", api_key="kyma-...")

response = client.chat.completions.create(
    model="glm-5.3",
    messages=[{"role": "user", "content": "..."}],
    tools=[...],  # function calling supported
)

Agent query example

Ask the API which models fit, instead of hardcoding an id:

curl "https://kymaapi.com/v1/models?recommended_for=chat&tools=true&quality_tier=frontier-open"

​Overview

​Specs

​Pricing

​Example

​Agent query example

Overview

Specs

Pricing

Example

Agent query example