Free GLM-5.3-Flash API
Updated 8/27/2026
Frontier 320B-A18B MoE coding & agentic model with 1M context. Formerly stealth 'ox-alpha'.
About the Model
为什么要选择 GLM-5.3-Flash？
GLM-5.3-Flash（原 OpenRouter 盲测第一的 Ox Alpha）是智谱专为代码重构与自主 Agent 打造的 320B MoE 轻量激活模型，具备 100 万 Token 原生超长上下文与原生图文多模态能力。
核心优势与特点
- 320B-A18B 架构与超小 KV Cache：采用稀疏与线性混合注意力机制，大幅降低长上下文显存占用与计算开销，响应极快。
- Coding Plan 3 倍可用额度：在智谱官方 GLM Coding Plan 订阅中享有 3x 额度红利，专为长时间无人值守 Agent 场景量身定制。
- 原生多模态代码调试：支持直接将设计图、报错截图或运行时视频输入给 Agent，精准定位像素级 UI 偏差与 DOM/CSS 漏洞。
How to call GLM-5.3-Flash
curl
curl https://free.empero.org/v1/chat/completions \
-H "Authorization: Bearer free" \
-H "Content-Type: application/json" \
-d '{
"model": "glm-5.3-flash",
"messages": [{"role": "user", "content": "Write a fast quicksort in TypeScript"}]
}'python
from openai import OpenAI
client = OpenAI(
api_key="free",
base_url="https://free.empero.org/v1"
)
response = client.chat.completions.create(
model="glm-5.3-flash",
messages=[{"role": "user", "content": "Write a fast quicksort in TypeScript"}],
)
print(response.choices[0].message.content)javascript
import OpenAI from "openai";
const client = new OpenAI({
apiKey: "free",
baseURL: "https://free.empero.org/v1",
});
const response = await client.chat.completions.create({
model: "glm-5.3-flash",
messages: [{ role: "user", content: "Write a fast quicksort in TypeScript" }],
});
console.log(response.choices[0].message.content);Provider Details
The following platforms provide free access to GLM-5.3-Flash through free tiers, trial credits, or daily quotas.
| Provider | Context Window | Free Quota | Requires CC | Rating | Action |
|---|---|---|---|---|---|
| Empero | N/A | No | Details |
Frequently Asked Questions
Is GLM-5.3-Flash free to use?
Yes. GLM-5.3-Flash is available for free through 1 provider(s) listed below, with no purchase required.
What are the rate limits and quotas?
Free access varies by provider — Empero: Unlimited.
How do I get a free GLM-5.3-Flash API key?
Sign up with Empero, then create an API key from your dashboard. See the provider details above for the exact steps.
Which providers offer GLM-5.3-Flash for free?
GLM-5.3-Flash is currently available for free via: Empero.
Know another free provider for GLM-5.3-Flash?
Help the community by sharing other ways to access this model for free.
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