ModelInfo
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GLM-5.3

Z.ai flagship text model with 1M context and stronger coding, built on the same base as GLM-5.2.

Zhipu AIglm-5.32026-08-18Report incorrect data

Specs

Context
1.05M
Max output
131.1K
Input price
$1.4/ 1M tokens
Output price
$4.4/ 1M tokens
Released
2026-08-18

Context

Context window
1.05M
Max input
—
Max output
131.1K

Pricing · USD / 1M tokens

Input
$1.4
Output
$4.4
Cache read
$0.26
Cache write
—

Modalities

Input
Text
Output
Text

API

API types
chatmessages

Reasoning

Reasoning
Yes
Levels
lowhighmax

Info

Status
Active
Released
2026-08-18
Knowledge cutoff
—

Features

Confirmed
toolsstructured_outputstreamingcaching
Source · official docsVerified 2026-10-11

How to call

1 provider

zhipumodel = glm-5.3reasoning = reasoning_effort

chat
POSThttps://api.z.ai/api/paas/v4/chat/completions
messages
POSThttps://api.z.ai/api/anthropic/v1/messages

JSON

Standard format
glm-5.3.json
{
  "id": "glm-5.3",
  "object": "model",
  "created": 1787011200,
  "owned_by": "zhipu",
  "name": "GLM-5.3",
  "api": {
    "types": [
      "chat",
      "messages"
    ]
  },
  "limits": {
    "context": 1048576,
    "input": null,
    "output": 131072
  },
  "modalities": {
    "input": [
      "text"
    ],
    "output": [
      "text"
    ]
  },
  "reasoning": {
    "supported": true,
    "efforts": [
      "low",
      "high",
      "max"
    ]
  },
  "pricing": {
    "currency": "USD",
    "unit": "1M_tokens",
    "input": 1.4,
    "output": 4.4,
    "cache_read": 0.26,
    "cache_write": null
  },
  "features": [
    "tools",
    "structured_output",
    "streaming",
    "caching"
  ],
  "info": {
    "status": "active",
    "release_date": "2026-08-18",
    "knowledge_cutoff": null,
    "description": "Z.ai flagship text model with 1M context and stronger coding, built on the same base as GLM-5.2.",
    "docs": "https://docs.z.ai/guides/llm/glm-5.3",
    "verified_at": "2026-10-11"
  }
}

Official sources

5