GLM 5.3 Flash via the Tokenator API

What the model is for

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 reducing compute overhead.

Specification

Full nameGLM 5.3 Flash
API IDglm-5.3-flash
Model vendorZ-AI
TypeText model (chat / completions)
Context window1M tokens
Max output131.1K tokens
Image inputyes
Tokenator usage multiplier1.5× – 1.7×
Input modalitiestext, image, video
Aliasescursor-glm-5.3-flash
Supported API formats/v1/chat/completions /v1/responses /v1/messages
Upstream providers3
Current statusavailable
Data updated2026-10-11

Benchmarks

Intelligence index41.8
Coding index71.5
Agentic index50.9

Artificial Analysis data loaded into the catalog for this model.

Upstream providers

ProviderMultiplier
Chinese Partner #11.6×
AiPartners Ltd1.5×
Unified LLM API1.7×

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-flash",
    "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, DeepSeek Harness, Hermes, Pi, OpenClaw.

FAQ about GLM 5.3 Flash

What is the API ID of GLM 5.3 Flash?

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

What context window does GLM 5.3 Flash have?

1M tokens; max output is 131.1K tokens.

How many tokens will a request cost?

(input + output) × 1.5× – 1.7×. 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.