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ZaiAvailable on AvalAI

glm-5.3-flash API on AvalAI

glm-5.3-flash

glm-5.3-flash is an AI model from Zai that is available through AvalAI's OpenAI-compatible API.

Open dashboardCompare

Price display scale

Input price$0.15 / 1M tokens

Output price$0.50 / 1M tokens

Context window991,000 tokens

Maximum output128,000 tokens

Use glm-5.3-flash with the AvalAI API

Keep the API key in an environment variable and send requests from server-side code.

Bash

curl https://api.avalai.ir/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $AVALAI_API_KEY" \
  -d '{"model": "glm-5.3-flash", "messages": [{"role": "user", "content": "Give a concise, practical solution."}]}'

Python

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AVALAI_API_KEY"],
    base_url="https://api.avalai.ir/v1",
)

response = client.chat.completions.create(
    model="glm-5.3-flash",
    messages=[{"role": "user", "content": "Give a concise, practical solution."}],
)

print(response.choices[0].message.content)

JavaScript

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.AVALAI_API_KEY,
  baseURL: "https://api.avalai.ir/v1",
});

const response = await client.chat.completions.create({
  model: "glm-5.3-flash",
  messages: [{ role: "user", content: "Give a concise, practical solution." }],
});

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

Create an API keyRead the quickstart

Capabilities and endpoints

• Function calling
• Prompt caching
• Reasoning
• Tool choice

glm-5.3-flash rate limits

Tier	RPM	TPM
Basic	3	40,000
Tier 1	25	10,000,000
Tier 2	250	4,000,000
Tier 3	500	8,000,000
Tier 4	750	10,000,000
Tier 5	1,500	30,000,000

Related models

• glm-5.3
• GLM 5.2
• GLM 5.1

Frequently asked questions

What is the glm-5.3-flash API on AvalAI?

Create an AvalAI API key and send the model ID glm-5.3-flash to one of the supported endpoints shown on this page.

How much does the glm-5.3-flash API cost on AvalAI?

The glm-5.3-flash API on AvalAI costs $0.15 per 1M input tokens and $0.50 per 1M output tokens.

What is the token cost for glm-5.3-flash?

Current AvalAI pricing for glm-5.3-flash is $0.15 / 1M tokens for input and $0.50 / 1M tokens for output.

What is the glm-5.3-flash context window?

The recorded maximum input context for glm-5.3-flash is 991,000 tokens.

What are the rate limits for glm-5.3-flash on AvalAI?

On tier 5, glm-5.3-flash on AvalAI supports up to 1,500 requests per minute and 30,000,000 tokens per minute.

What features does glm-5.3-flash support on AvalAI?

glm-5.3-flash on AvalAI supports Function calling, Prompt caching, Reasoning, Tool choice.

What account tier is required to use glm-5.3-flash on AvalAI?

Calling glm-5.3-flash on AvalAI requires the Basic tier (tier 0) or higher.

Third-party data and freshness

• Pricing, availability, endpoints, and rate limits: AvalAI structured data (authoritative)