Zyphra

GLM 5.1

Refined post-training for coding and agentic engineering workflows.

zai-org/GLM-5.1-FP8

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About

GLM-5.1 is Z.ai's next-generation flagship model built for agentic engineering, with stronger coding capabilities and sustained performance over long-horizon tasks with hundreds of iteration rounds. It's a 754B-parameter MoE model

API Usage

from openai import OpenAI

client = OpenAI(
    api_key="<YOUR_ZYPHRA_API_KEY>",
    base_url="https://api.zyphracloud.com/api/v1",
)

response = client.chat.completions.create(
    model="zai-org/GLM-5.1-FP8",
    messages=[{"role": "user", "content": "Hello!"}],
)

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

Provider

Release Date

Model License

Model Architecture

Mixture-of-experts

Total parameters

Activated parameters

Context length

Input modality

Output modality

Input price

Cached input price

Output price

ZAI

Mar 26, 2026

MIT

Transformer

Yes

754B

40B

200k

Text

$1.20

$0.20

$4.00