z-ai/glm-5.1
202,752 context · $1.40/M input tokens · $4.40/M output tokens
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on a single task for more than 8 hours, autonomously planning, executing, and improving itself throughout the process, ultimately delivering complete, engineering-grade results.
Pricing
Pay-per-use
No upfront costs, pay only for what you use
Try the model
API Usage
Use the following code examples to integrate with our API:
from openai import OpenAI
client = OpenAI(
api_key="YOUR_API_KEY",
base_url="https://llm.wavespeed.ai/v1"
)
response = client.chat.completions.create(
model="z-ai/glm-5.1",
messages=[
{"role": "user", "content": "Hello!"}
]
)
print(response.choices[0].message.content)Info
Supported Functionality
API Access Guide
GLM 5.1 API
z-ai/glm-5.1
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on a single task for more than 8 hours, autonomously planning, executing, and improving itself throughout the process, ultimately delivering complete, engineering-grade results.
Input
$1.4 /M
Output
$4.4 /M
Context
203K
Tool Use
Supported
Try GLM 5.1 on WaveSpeedAI
Access GLM 5.1 through our unified API — OpenAI-compatible, no cold starts, transparent pricing.
Frequently Asked Questions about GLM 5.1
How much does GLM 5.1 cost via the API?+
Pricing on WaveSpeedAI: $1.40 per million input tokens and $4.40 per million output tokens. Prompt caching and batch processing are billed separately and reduce effective cost on long, repetitive workloads.
What is the context window of GLM 5.1?+
GLM 5.1 supports up to 203K tokens of context with up to — tokens of output per request.
Is GLM 5.1 OpenAI-compatible?+
Yes. WaveSpeedAI exposes GLM 5.1 through an OpenAI-compatible endpoint at https://llm.wavespeed.ai/v1. Point the official OpenAI SDK at this base URL with your WaveSpeedAI API key — no other code changes required.
How do I get started with GLM 5.1?+
Sign in to WaveSpeedAI, create an API key in Access Keys, then send a request to https://llm.wavespeed.ai/v1/chat/completions with model id set to the value shown above. New accounts receive free credits to evaluate GLM 5.1 before paying per token.