GLM-5.3

GLM-5.3

Z.ai
LTM-1

LTM-1

Magic AI
+
+

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About

GLM-5.3 is Z.ai’s frontier coding model designed for complex software engineering, long-horizon agent tasks, and advanced post-training research. The model uses the same base model as GLM-5.2, with improvements coming from scaled post-training across more environments, more diverse tasks, and larger compute investment. GLM-5.3 delivers stronger coding performance, better task ownership, improved benchmark results, and greater efficiency across realistic development workflows. It is built to handle complex coding tasks, production-style engineering work, research environments, automation tasks, and agentic workflows that require multi-step execution. The model also shows emergent cyber capabilities in vulnerability discovery and exploitation-chain reasoning, with safety evaluation and hardening planned before open-weight release.

About

Magic’s LTM-1 enables 50x larger context windows than transformers. Magic's trained a Large Language Model (LLM) that’s able to take in the gigantic amounts of context when generating suggestions. For our coding assistant, this means Magic can now see your entire repository of code. Larger context windows can allow AI models to reference more explicit, factual information and their own action history. We hope to be able to utilize this research to improve reliability and coherence.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Software engineers, coding agent builders, AI researchers, ML infrastructure teams, security researchers, developer tool teams, automation teams, technical leaders, and organizations that need frontier coding models, long-horizon reasoning, production-style software engineering, benchmark-driven model evaluation, reinforcement learning research, coding-agent integrations, reasoning effort controls, ZCode workflows, and advanced technical task automation

Audience

Developers interested in a 5 million token context window large language model

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Open source
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Pros & Cons from Real Users

Pros

  • The thing I like most is that GLM-5.3 feels aimed at serious engineering work, not casual prompting. It is built around coding agents, long-running software tasks, debugging, and the kind of multi-step execution that actually matters when you are working inside real repos. The post-training jump is also interesting. Z.ai is not just talking about a bigger model; it is pushing the idea that better training on agentic coding and cyber workflows can make the model more useful in practice.

Cons

  • The cybersecurity angle is impressive, but it is also where I would be most cautious. Strong vulnerability discovery and cyber reasoning can be useful for defense, audits, and secure engineering, but I would want very clear controls around how it is used.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Z.ai
Founded: 2023
China
z.ai/

Company Information

Magic AI
Founded: 2022
United States
magic.dev/blog/ltm-1

Alternatives

Alternatives

LTM-2-mini

LTM-2-mini

Magic AI
MiniMax M3

MiniMax M3

MiniMax
GPT-5.6 Sol

GPT-5.6 Sol

OpenAI
Inkling

Inkling

Thinking Machines Lab
GLM-5

GLM-5

Z.ai
GPT-5.4

GPT-5.4

OpenAI
GLM-5.1

GLM-5.1

Z.ai
Claude Opus 4.6

Claude Opus 4.6

Anthropic

Categories

Categories

Integrations

CSS
Cheaper Inference
Cherry Studio
Grok Build
Hermes Agent
Ollama
OpenClaw
OpenCode Zen
OpenRouter
PyTorch
Quickwork
R
Roo Code
Rust
Together AI
Wafer
Z.ai
ZCode
Zo Computer
pandas

Integrations

CSS
Cheaper Inference
Cherry Studio
Grok Build
Hermes Agent
Ollama
OpenClaw
OpenCode Zen
OpenRouter
PyTorch
Quickwork
R
Roo Code
Rust
Together AI
Wafer
Z.ai
ZCode
Zo Computer
pandas
Claim GLM-5.3 and update features and information
Claim GLM-5.3 and update features and information
Claim LTM-1 and update features and information
Claim LTM-1 and update features and information