Z.ai

GLM 5.1

z-ai/glm-5.1

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Specification

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

GLM 5.1

reasoning open weights tools

Z.ai z-ai/glm-5.1

GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...

Input $/1M: $0.97
Output $/1M: $3.04
Context: 205K
Max output: 128K
Released: Apr 7, 2026
Modalities: text

Intelligence index-

Coding index56

Agentic index25

Cached input reads $0.18 per 1M · weights on Hugging Face as zai-org/GLM-5.1

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 5.1
targets:
  - id: glm-5-1
    kind: llm
    name: GLM 5.1
    metadata:
      model: z-ai/glm-5.1          # links the target to this catalogue entry
    capabilities:
      domains: [general]
      supports_tools: true
      context_window: 204800
    cost:
      usd_per_1k_tokens: 0.002001

Price among Z.ai models

Input list price per million tokens; GLM 5.1 is the 8th cheapest 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 5.1
$0.97
9
GLM 5.2
$0.97
10
GLM Latest
$1.17
11
GLM 5V Turbo
$1.20
12
GLM 5 Turbo
$1.20

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