Z.ai: GLM 5.3 FlashX Legal API
z-ai/glm-5.3-flashx-legalTextCall Z.ai: GLM 5.3 FlashX Legal through UberLLM’s OpenAI-compatible API, from $0.37/M input and $1.25/M output, served by third-party providers. Made by Z.ai. 1,048,576 token context. No UberLLM fee on requests. Adding credit by card costs 5.5% + $0.50.
Also sold directly by: OpenRouter. Here, sellers serve it through their own provider accounts. Where the capacity comes from
How much does the Z.ai: GLM 5.3 FlashX Legal API cost?
On November 3, 2026, Z.ai: GLM 5.3 FlashX Legal costs $0.37 per million input tokens and $1.25 per million output tokens through UberLLM. It reads up to 1,048,576 tokens of context. Every request is listed with its cost in the Activity log. UberLLM adds no fee to these prices, and a request that fails is not billed.
Z.ai: GLM 5.3 FlashX Legal pricing
OpenRouter charges $0.37 / $1.25 per 1M input / output tokens.
- Input
- $0.37
- Output
- $1.25
- Cached input
- $0.075
- Input
- $0.37
- Output
- $1.25
- Cached input
- $0.075
Each request is sent to an available third-party provider for this model and retried if the provider fails before it starts answering. No UberLLM fee on requests. Adding credit by card costs 5.5% + $0.50.
How to use Z.ai: GLM 5.3 FlashX Legal with the OpenAI SDK
With the OpenAI SDK, set the base URL to UberLLM and call Z.ai: GLM 5.3 FlashX Legal 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-flashx-legal",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)Z.ai: GLM 5.3 FlashX Legal API FAQ
Can I cap what a Z.ai: GLM 5.3 FlashX Legal request costs?
Yes. A request costs what its provider charged; the listed price is $0.37 input and $1.25 output per million tokens, and a request can cost more when the cheaper providers are busy. Send provider.max_price with your most per million tokens: the request only goes to providers at or under it and is never billed above it. Each request is listed with its cost in Activity.
How do I call Z.ai: GLM 5.3 FlashX Legal 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-legal". Anthropic SDKs work via https://api.uberllm.dev/v1/messages.
Is Z.ai: GLM 5.3 FlashX Legal OpenAI-compatible on UberLLM?
Yes. Every model on UberLLM, including Z.ai: GLM 5.3 FlashX Legal, is served through one OpenAI-compatible endpoint. Set the base URL and key in your existing client.
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