ZaiPaidOperational

Glm 5.1

API model name: glm-5.1

Glm 5.1 is Zai's chat model, served on the Api.Airforce unified API. It has a 200K-token context window. Capabilities include Tool calling, Reasoning, Prompt caching. It is priced at $0.80 per million input tokens and $2.40 per million output tokens. That is below the provider's $1.40 official input rate. Access it through the OpenAI-compatible API with one key, alongside 65+ other models on Api.Airforce.

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Pricing

Input / 1M tokens

$0.80

Output / 1M tokens

$2.40

Official input rate

$1.40

Api.Airforce price vs. the provider's official rate.

Specifications

Provider: Zai
Type: chat model
Context window: 200K tokens
Input: text
Output: text

Capabilities

Tool callingReasoningPrompt cachingStreaming

Use Glm 5.1 via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass glm-5.1 as the model.

cURL

curl https://api.airforce/v1/chat/completions \
  -H "Authorization: Bearer $AIRFORCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.1",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

Python

from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
r = client.chat.completions.create(
    model="glm-5.1",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(r.choices[0].message.content)

JavaScript

import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const r = await client.chat.completions.create({
  model: "glm-5.1",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);

Live performance

Real throughput and latency across the suppliers serving this model.

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