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...

by Z.ai

Overview

Quick stats across all benchmark runs.

Score

44%

3 benchmarks

Avg Latency

19.9s

20 requests

Pricing

Free in / Free out

per 1M tokens

Context

203K

tokens

Alternatives

Models with similar or better quality but different tradeoffs

No alternatives found

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Benchmark Performance

How this model performs across different benchmarks

Benchmark	Score	Rank
Explain Like I'm 5	100%	4 / 47
Categorization Bench	65%	9 / 54
Money Boy Cultural Literacy Test	21%	100 / 107

Score Over Time

Performance trends across all benchmark runs

Benchmark Activity

Number of benchmark runs over time

Quickstart

View on OpenRouter

Get started with this model using OpenRouter

import { OpenRouter } from "@openrouter/sdk";

const openrouter = new OpenRouter({
  apiKey: "<OPENROUTER_API_KEY>"
});

const completion = await openrouter.chat.completions.create({
  model: "z-ai/glm-5.1",
  messages: [
    {
      role: "user",
      content: "Hello!"
    }
  ]
});

console.log(completion.choices[0].message.content);

Get your API key at openrouter.ai/keys

Other Models from Z.ai

Compare performance with other models from the same creator

Model	Latency	Cost/1M	Score
GLM 4.7	53.4s	$1.07	45%
GLM 4.7 Flash	31.6s	$0.23	29%
GLM 4.5 Air	30.1s	$0.49	—
GLM 4.6V	43.5s	$0.60	—
GLM 4 32B	18.7s	$0.10	—
GLM 4.5V	51.3s	$1.20	—
GLM 4.5	48.4s	$1.40	—
GLM 4.6	36.3s	$1.08	—
GLM 5V Turbo	—	$2.60	—
GLM 5 Turbo	9.2s	$2.60	—
GLM 5	6.2s	$1.26	—