How much does GLM 5.3 Flashx cost?

GLM 5.3 Flashx is billed pay-as-you-go at $0.41 per 1M input tokens and $1.38 per 1M output tokens. There is no subscription — you only pay for what you use.

What can GLM 5.3 Flashx do?

GLM 5.3 Flashx supports Vision, Tool calling.

Is GLM 5.3 Flashx free to use?

GLM 5.3 Flashx is a paid, pay-as-you-go model — no subscription, you are only charged for usage.

How do I use GLM 5.3 Flashx via the API?

GLM 5.3 Flashx is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID glm-5.3-flashx with your Api.Airforce API key.

Who makes GLM 5.3 Flashx?

GLM 5.3 Flashx is Z.ai's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

Z.aiPaidOperational

GLM 5.3 Flashx

API model name: glm-5.3-flashx

GLM 5.3 Flashx is Z.ai's chat model, served on the Api.Airforce unified API. Capabilities include Vision, Tool calling. It is priced at $0.41 per million input tokens and $1.38 per million output tokens. That is below the provider's $0.37 official input rate. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

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Pricing

Input / 1M tokens

$0.41

Output / 1M tokens

$1.38

Cache read / 1M tokens

$0.10

Official input rate

$0.37

Official output rate

$1.25

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

Specifications

Provider: Z.ai
Type: chat model

Capabilities

VisionTool calling

What is GLM 5.3 Flashx used for?

Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
Image understanding — analyze photos, screenshots, charts and scanned documents.
Agents & automation — function calling and tool use for multi-step workflows.

GLM 5.3 Flashx vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
GLM 5.3 Flashx	—	—	$0.41	$1.38
GLM 4	—	—	$6.10	$7.72
GLM 4 Airx	—	—	$0.58	$0.62
GLM 4 Long	—	—	$0.08	$0.12

Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.

GLM 5.3 Flashx — frequently asked questions

How much does GLM 5.3 Flashx cost?: GLM 5.3 Flashx is billed pay-as-you-go at $0.41 per 1M input tokens and $1.38 per 1M output tokens. There is no subscription — you only pay for what you use.
What can GLM 5.3 Flashx do?: GLM 5.3 Flashx supports Vision, Tool calling.
Is GLM 5.3 Flashx free to use?: GLM 5.3 Flashx is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use GLM 5.3 Flashx via the API?: GLM 5.3 Flashx is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID glm-5.3-flashx with your Api.Airforce API key.
Who makes GLM 5.3 Flashx?: GLM 5.3 Flashx is Z.ai's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use GLM 5.3 Flashx via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass glm-5.3-flashx 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-5.3-flashx",
    "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-5.3-flashx",
    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-5.3-flashx",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);