GLM 5.3 Flash API
z-ai/glm-5.3-flash
Call GLM 5.3 Flash through UberLLM’s OpenAI-compatible API — from $0.0016/M input and $0.0053/M output, routed automatically to the cheapest healthy seller. Z.ai · 1,048,576 token context. Fee included.
GLM 5.3 Flash pricing
- Input
- $0.00158
- Output
- $0.00525
- Cached input
- $0.000315
- Input
- $0.165
- Output
- $0.55
- Cached input
- $0.033
| Provider | Input | Output | Cached input |
|---|---|---|---|
| Mordiem | $0.075 | $0.25 | $0.015 |
| Z.ai | $0.075 | $0.25 | $0.015 |
| Bankr | $0.075 | $0.25 | $0.015 |
| Venice AI | $0.15 | $0.50 | $0.03 |
| OpenRouter | $0.15 | $0.50 | $0.03 |
UberLLM routes every request to the cheapest healthy seller for this model. The price shown includes UberLLM’s 10% fee.
How to use GLM 5.3 Flash with the OpenAI SDK
Already using the OpenAI SDK? Change one line — the base URL — and call GLM 5.3 Flash with your existing code. Anthropic SDKs work against https://api.uberllm.dev/v1/messages.
from openai import OpenAI
client = OpenAI(
base_url="https://api.uberllm.dev/v1",
api_key="ull_your_key_here",
)
resp = client.chat.completions.create(
model="z-ai/glm-5.3-flash",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)GLM 5.3 Flash API — FAQ
How much does the GLM 5.3 Flash API cost?
GLM 5.3 Flash is listed from $0.0016 per million input tokens and $0.0053 per million output tokens through UberLLM, which routes each request to the cheapest healthy seller on a live marketplace and bills the price shown, which includes UberLLM's 10% fee.
How do I call GLM 5.3 Flash via API?
Use any OpenAI-compatible SDK: set the base URL to https://api.uberllm.dev/v1, your UberLLM API key, and model "z-ai/glm-5.3-flash". Anthropic SDKs work via https://api.uberllm.dev/v1/messages.
Is GLM 5.3 Flash OpenAI-compatible on UberLLM?
Yes. Every model on UberLLM — including GLM 5.3 Flash — is served through one OpenAI-compatible endpoint, so you change only the base URL and key.