Z.ai

GLM 5.3

z-ai/glm-5.3

JSON

Specification

Published by the vendor; the platform bills at the target's declared price.

GLM 5.3

reasoning open weights tools

Z.ai z-ai/glm-5.3

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves...

Input $/1M: $1.40
Output $/1M: $4.40
Context: 1.3M
Max output: 262K
Released: Aug 18, 2026
Modalities: text

Intelligence index49

Coding index75

Agentic index54

Cached input reads $0.14 per 1M · weights on Hugging Face as zai-org/GLM-5.3

On this deployment

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Not routable here yet

Add a target with metadata.model set to this id.

targets.yamlyaml

# targets.yaml - declare a target that runs GLM 5.3
targets:
  - id: glm-5-3
    kind: llm
    name: GLM 5.3
    metadata:
      model: z-ai/glm-5.3          # links the target to this catalogue entry
    capabilities:
      domains: [general]
      supports_tools: true
      context_window: 1310720
    cost:
      usd_per_1k_tokens: 0.002900

Price among Z.ai models

Input list price per million tokens; GLM 5.3 is the most expensive of 13 listed.

1
GLM 4.7 Flash
$0.06
2
GLM Flash Latest
$0.07
3
GLM 5.3 Flash
$0.07
4
GLM 5.3 Flash (batch)
$0.15
5
GLM 4.6V
$0.30
6
GLM 4.7
$0.40
7
GLM 5
$0.60
8
GLM 5.2
$0.97
9
GLM 5.1
$0.97
10
GLM Latest
$1.17
11
GLM 5V Turbo
$1.20
12
GLM 5.3
$1.40

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