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Z.ai: GLM 5.3 FlashX API

z-ai/glm-5.3-flashx

Call Z.ai: GLM 5.3 FlashX through UberLLM’s OpenAI-compatible API — from $0.2035/M input and $0.6875/M output, routed automatically to the cheapest healthy seller. Z.ai · 1,048,576 token context. Fee included.

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Demo · a few prompts a day, no sign-up

Z.ai: GLM 5.3 FlashX pricing

Price now · per 1M tokens
Input
$0.2035
Output
$0.6875
Cached input
$0.0495
% off list
50% off
98% of input served from cache
List price · per 1M tokens
Input
$0.407
Output
$1.375
Cached input
$0.099
Providers and their list prices, per 1M tokens
ProviderInputOutputCached input
OpenRouter$0.37$1.25$0.09

UberLLM routes every request to the cheapest healthy seller for this model. The price shown includes UberLLM’s 10% fee.

How to use Z.ai: GLM 5.3 FlashX with the OpenAI SDK

Already using the OpenAI SDK? Change one line — the base URL — and call Z.ai: GLM 5.3 FlashX with your existing code. Anthropic SDKs work against https://api.uberllm.dev/v1/messages.

python
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-flashx",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

Z.ai: GLM 5.3 FlashX API — FAQ

How much does the Z.ai: GLM 5.3 FlashX API cost?

Z.ai: GLM 5.3 FlashX is listed from $0.2035 per million input tokens and $0.6875 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 Z.ai: GLM 5.3 FlashX 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-flashx". Anthropic SDKs work via https://api.uberllm.dev/v1/messages.

Is Z.ai: GLM 5.3 FlashX OpenAI-compatible on UberLLM?

Yes. Every model on UberLLM — including Z.ai: GLM 5.3 FlashX — is served through one OpenAI-compatible endpoint, so you change only the base URL and key.

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