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GLM 5.2

Z.ai's flagship bilingual model with strong agentic tool-use and long-form writing in both English and Chinese.

z-ai/glm-5.2
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What is GLM 5.2?

GLM 5.2 is Z.ai's chat model. Z.ai's flagship bilingual model with strong agentic tool-use and long-form writing in both English and Chinese. It runs on Speka's OpenAI-compatible /v1/chat/completions endpoint at $0.60 / 1M input and $2.20 / 1M output tokens, using the model ID z-ai/glm-5.2.

Test it live

Live playgroundGLM 5.2in-browser demo

Test GLM 5.2 live

Send a message and watch the model respond. Multi-turn — it remembers the conversation.

How to call GLM 5.2 via the API

Speka exposes GLM 5.2 on an OpenAI-compatible /v1/chat/completions endpoint. Point any OpenAI SDK at https://speka.me/v1, set model to z-ai/glm-5.2, and your existing code runs unchanged.

quickstart.py
from openai import OpenAI

client = OpenAI(
    base_url="https://speka.me/v1",
    api_key="sk-speka-live-...",  # your Speka key
)

resp = client.chat.completions.create(
    model="z-ai/glm-5.2",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)
FAQ

Frequently asked questions

GLM 5.2 is Z.ai's chat model. Z.ai's flagship bilingual model with strong agentic tool-use and long-form writing in both English and Chinese. It is available on Speka's OpenAI-compatible API using the model ID z-ai/glm-5.2.
On Speka, GLM 5.2 is priced at $0.60 / 1M input and $2.20 / 1M output tokens. Pricing is per-token with no subscription or seat fee — usage is billed against your plan's monthly allowance, then at the same rate with no overage penalty. Rates are current as of June 2026; check the pricing page for updates.
Speka exposes GLM 5.2 on an OpenAI-compatible /v1/chat/completions endpoint. Set base_url to https://speka.me/v1, supply your Speka key, and set model to "z-ai/glm-5.2" in any OpenAI SDK — no other code changes are required.
GLM 5.2 supports a 128,000-token context window — roughly 96,000 words of input, suitable for long documents, multi-turn agents, and large-context tasks.
Yes. GLM 5.2 is served through Speka's OpenAI-compatible endpoint, so any application built on the OpenAI Python or Node.js SDK, LangChain, or LlamaIndex can call it by changing only the base URL and model ID.

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