GLM 5.3 via the Tokenator API

Q: What is the API ID of GLM 5.3?

glm-5.3 — put this into the model field of your request.

What the model is for

GLM 5.3 is the latest large-scale reasoning model from Z.ai. It supports text input and output with a 1M-token context window, and is built for long-horizon agent workflows, project-level software engineering, and complex multi-step automation.

Specification

Full name	GLM 5.3
API ID	`glm-5.3`
Model vendor	Z-AI
Type	Text model (chat / completions)
Context window	1M tokens
Max output	128K tokens
Image input	no
Tokenator usage multiplier	2× – 4×
Input modalities	text
Aliases	`cursor-glm-5.3`
Supported API formats	`/v1/chat/completions` `/v1/responses` `/v1/messages`
Upstream providers	3
Current status	available
Data updated	2026-08-22

Benchmarks

Intelligence index	59.5
Coding index	74.8
Agentic index	59.1

Artificial Analysis data loaded into the catalog for this model.

Upstream providers

Provider	Multiplier
AiPartners Ltd	2×
Chinese Partner #1	4×
Z.AI Partner #1	3×

A request goes to the first available provider by priority; if it fails, Tokenator switches to the next one.

Example request

curl

curl https://api.tokenator.top/v1/chat/completions \
  -H "Authorization: Bearer sk-your-tokenator-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.3",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Compatible tools

The model can be used in any tool that accepts a custom base URL: Claude Code, Codex CLI, OpenCode, Cursor, Cline, Kilo Code, Cherry Studio, OpenClaw.

FAQ about GLM 5.3

What is the API ID of GLM 5.3?

glm-5.3 — put this into the model field of your request.

What context window does GLM 5.3 have?

1M tokens; max output is 128K tokens.

How many tokens will a request cost?

(input + output) × 2× – 4×. See the documentation for details.

Which tools support this model?

Any tool that accepts a custom base URL: Claude Code, Codex CLI, OpenCode, Cursor, Cline, Kilo Code. Setup guides are in the integrations section.