glm-5.2

Z.aiAdded Jul 12, 2026
Model idzai-org/glm-5.2

Z.ai's flagship for long, multi-step agent work. A 1M-token context built to stay reliable through long coding and agent sessions, and Z.ai's best open model on the multi-step benchmarks it reports.

Cost /1M tokens
$1.40input
$0.35cached
$4.40output
Context
1Mtokens
Live speed
149 tok/s · 0.38s to first token
Speed

Throughput users got on glm-5.2 with Keln API in the last 24 hours.

100200300400 tok/s24h ago18h ago12h ago6h agonow
Latency

Time to first token users got on glm-5.2 with Keln API in the last 24 hours.

1.0 s2.0 s3.0 s4.0 s24h ago18h ago12h ago6h agonow

Capabilities

Input
Text
Tool calling
Yes
JSON output
Yes
Reasoning
Yes
Web search
With opt-in
Data retention
Zero

Use the API

Create an API key, save it to KELN_API_KEY, then call the endpoint below.

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.keln.ai/v1/",
    api_key=os.environ.get("KELN_API_KEY"),
)

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

Use with your tools

Set up guides on docs.keln.ai ↗

Ready to build on Keln?

Run glm-5.2 in the playground, or create a key and call it from your code.