GLM-5.1
GLM-5.1 is Zhipu AI's flagship reasoning model, featuring a 202K context window and an autonomous 8-hour execution loop for complex agentic engineering.
zhipuGLM2026-04-08About GLM-5.1
Learn about GLM-5.1's capabilities, features, and how it can help you achieve better results.
GLM-5.1 is Zhipu AI's flagship foundation model designed for complex system engineering and long-horizon agentic tasks. Built on a Mixture-of-Experts (MoE) architecture with 744 billion parameters and 40 billion active per pass, it represents a significant leap in endurance and autonomous problem-solving. The model is specifically engineered to overcome the reasoning plateaus seen in earlier large language models, maintaining productivity and code quality over thousands of tool calls and hundreds of iterations. It identifies blockers, runs experiments, and adjusts its own strategy without human intervention.
Technically, GLM-5.1 excels as a primary reasoning engine in multi-agent systems. It handles high-level architectural decisions while delegating implementation to smaller models. It features a 202K context window supported by a dynamic sparse attention mechanism, ensuring coherence across massive codebases. The model is released as open weights under the MIT License, providing a viable local alternative to proprietary frontier models for tasks like database optimization, GPU kernel engineering, and full-stack web application development.
KernelBench Level 3 results show that GLM-5.1 maintains a significant speedup in agentic ML workloads over long turns compared to Claude Opus 4.6. This endurance allows developers to trigger an engineering task in the morning and receive a fully tested, deployed service by the end of the day. It handles the entire lifecycle of a bug fix, from reproducing the issue in a sandbox to submitting the final pull request.
Use Cases
Discover the different ways you can use GLM-5.1 to achieve great results.
Autonomous Software Engineering
It runs autonomously for 8+ hours to design, implement, and debug microservices without human guidance.
High-Performance Database Tuning
The model iteratively optimizes Rust-based vector search implementations over hundreds of rounds.
GPU Kernel Optimization
It analyzes reference implementations to produce faster GPU kernels that outperform default autotune compilers.
Multi-Agent Orchestration
It acts as a reasoning core that coordinates sub-tasks and tool-calls across a swarm of specialized smaller models.
Complex Terminal Tasks
It executes real-world terminal operations and multi-step system administration via agentic CLI tools.
Full-Stack Web Design
The model generates visually consistent UI layouts and backend logic for browser-based desktop environments.
Strengths
Limitations
API Quick Start
zhipu/glm-5.1
import OpenAI from 'openai';
const client = new OpenAI({
apiKey: process.env.ZHIPU_API_KEY,
baseURL: 'https://api.z.ai/api/paas/v4'
});
const chat = await client.chat.completions.create({
model: 'glm-5.1',
messages: [{ role: 'user', content: 'Optimize this database schema.' }],
stream: true
});
for await (const chunk of chat) {
process.stdout.write(chunk.choices[0]?.delta?.content || '');
}Install the SDK and start making API calls in minutes.
Community Feedback
See what the community thinks about GLM-5.1
“GLM-5.1 looped on one prompt for 8 straight hours. It didn't quit like most models do; it kept adding features and self-reviewing.”
“I've soak-tested it to 140k context no less than 5 times and it's remained coherent. SOTA might have a challenger.”
“GLM-5.1 is basically neck-and-neck with Opus on this benchmark. It's now the #1 open model in the Arena.”
“Every time I see an NPC get genuinely convinced through unscripted dialogue with GLM-5.1, it's pure magic.”
“The coding performance is legitimate. It fixed a race condition in our Go backend that GPT-4o kept hallucinating about.”
“Running this locally with Unsloth is a game changer for data privacy in our legal tech stack.”
Related Videos
Watch tutorials, reviews, and discussions about GLM-5.1
“GLM-5.1 got 45.3% on this benchmark, which is a substantial jump for the family.”
“It's an incredibly slow model... they probably have more of their GPUs still serving GLM-5.”
“The way it handles tool calls is much more robust than the standard GLM 5.”
“It's currently the strongest reasoning model you can download and run on your own hardware.”
“You can see it actually identifying its own mistakes in the thinking log.”
“It can run autonomously for 8 hours, refining strategies through thousands of iterations.”
“It outperforms Gemini 3.1 Pro and Qwen 3.6 Plus on popular repo-generation benchmarks.”
“The agentic mode is where this model truly shines, it doesn't give up on hard bugs.”
“Z.ai has basically dropped the paywall on a frontier-level 744B parameter model.”
“It effectively manages the 'plateau' problem where other LLMs lose focus over time.”
“80% size reduction from the original 1.65 TB down to 236GB while maintaining quality.”
“The power of open source: even in a quantized version, it wrote working code for fireworks.”
“You'll need at least 256GB of system RAM to even think about loading this MoE giant.”
“It utilizes a dynamic sparse attention mechanism to keep that 202k context coherent.”
“Using Unsloth makes the training and inference process significantly more efficient.”
Automatio combines the power of AI agents, web automation, and smart integrations to help you accomplish more in less time.
Pro Tips
Expert tips to help you get the most out of GLM-5.1 and achieve better results.
Toggle Thinking Mode
Ensure the 'Thinking' toggle is enabled in your configuration to unlock the 8-hour autonomous iteration capabilities.
Use Off-Peak Quotas
Run large engineering batches during off-peak hours outside 14:00-18:00 Beijing Time for better pricing.
Local Memory Requirements
Use Unsloth Dynamic GGUF quantization to fit the 1.6TB model into 256GB of system memory for local runs.
Strategic Task Selection
Reserve GLM-5.1 for architectural reasoning and use GLM-4.7 for routine implementations to manage costs.
Testimonials
Join thousands of satisfied users who have transformed their workflow
Jonathan Kogan
Co-Founder/CEO, rpatools.io
Automatio is one of the most used for RPA Tools both internally and externally. It saves us countless hours of work and we realized this could do the same for other startups and so we choose Automatio for most of our automation needs.
Mohammed Ibrahim
CEO, qannas.pro
I have used many tools over the past 5 years, Automatio is the Jack of All trades.. !! it could be your scraping bot in the morning and then it becomes your VA by the noon and in the evening it does your automations.. its amazing!
Ben Bressington
CTO, AiChatSolutions
Automatio is fantastic and simple to use to extract data from any website. This allowed me to replace a developer and do tasks myself as they only take a few minutes to setup and forget about it. Automatio is a game changer!
Sarah Chen
Head of Growth, ScaleUp Labs
We've tried dozens of automation tools, but Automatio stands out for its flexibility and ease of use. Our team productivity increased by 40% within the first month of adoption.
David Park
Founder, DataDriven.io
The AI-powered features in Automatio are incredible. It understands context and adapts to changes in websites automatically. No more broken scrapers!
Emily Rodriguez
Marketing Director, GrowthMetrics
Automatio transformed our lead generation process. What used to take our team days now happens automatically in minutes. The ROI is incredible.
Jonathan Kogan
Co-Founder/CEO, rpatools.io
Automatio is one of the most used for RPA Tools both internally and externally. It saves us countless hours of work and we realized this could do the same for other startups and so we choose Automatio for most of our automation needs.
Mohammed Ibrahim
CEO, qannas.pro
I have used many tools over the past 5 years, Automatio is the Jack of All trades.. !! it could be your scraping bot in the morning and then it becomes your VA by the noon and in the evening it does your automations.. its amazing!
Ben Bressington
CTO, AiChatSolutions
Automatio is fantastic and simple to use to extract data from any website. This allowed me to replace a developer and do tasks myself as they only take a few minutes to setup and forget about it. Automatio is a game changer!
Sarah Chen
Head of Growth, ScaleUp Labs
We've tried dozens of automation tools, but Automatio stands out for its flexibility and ease of use. Our team productivity increased by 40% within the first month of adoption.
David Park
Founder, DataDriven.io
The AI-powered features in Automatio are incredible. It understands context and adapts to changes in websites automatically. No more broken scrapers!
Emily Rodriguez
Marketing Director, GrowthMetrics
Automatio transformed our lead generation process. What used to take our team days now happens automatically in minutes. The ROI is incredible.
Related AI Models
GLM-5
Zhipu (GLM)
GLM-5 is Zhipu AI's 744B parameter open-weight powerhouse, excelling in long-horizon agentic tasks, coding, and factual accuracy with a 200k context window.
GPT-5.2
OpenAI
GPT-5.2 is OpenAI's flagship model for professional tasks, featuring a 400K context window, elite coding, and deep multi-step reasoning capabilities.
Gemini 3.1 Flash-Lite
Gemini 3.1 Flash-Lite is Google's fastest, most cost-efficient model. Features 1M context, native multimodality, and 363 tokens/sec speed for scale.
Claude Opus 4.5
Anthropic
Claude Opus 4.5 is Anthropic's most powerful frontier model, delivering record-breaking 80.9% SWE-bench performance and advanced autonomous agency for coding.
Grok-4
xAI
Grok-4 by xAI is a frontier model featuring a 2M token context window, real-time X platform integration, and world-record reasoning capabilities.
Kimi K2.5
Moonshot
Discover Moonshot AI's Kimi K2.5, a 1T-parameter open-source agentic model featuring native multimodal capabilities, a 262K context window, and SOTA reasoning.
Kimi K2 Thinking
Moonshot
Kimi K2 Thinking is Moonshot AI's trillion-parameter reasoning model. It outperforms GPT-5 on HLE and supports 300 sequential tool calls autonomously for...
GPT-5.1
OpenAI
GPT-5.1 is OpenAI’s advanced reasoning flagship featuring adaptive thinking, native multimodality, and state-of-the-art performance in math and technical...
Frequently Asked Questions
Find answers to common questions about GLM-5.1