GLM-4.5 - Unifying agentic capabilities in one open model
GLM-4.5 is a new 355B parameter open-weight MoE model (32B active). It delivers state-of-the-art performance on reasoning, code, and agentic tasks. Both the 355B flagship and a 106B Air version are now available, featuring dual-mode inference.
Replies
Z.ai
Today, we introduce two new GLM family members: GLM-4.5 and GLM-4.5-Air — our latest flagship models.
GLM-4.5 is built with 355 billion total parameters and 32 billion active parameters, and GLM-4.5-Air with 106 billion total parameters and 12 billion active parameters. Both are designed to unify reasoning, coding, and agentic capabilities into a single model in order to satisfy more and more complicated requirements of fast rising agentic applications.
We're proud to contribute GLM-4.5 to the open-source community and can't wait to see what developers build with it. Looking forward to your feedback!
Eternal AI
Congrats on the launch! GLM-4.5 could be a major step forward in unifying reasoning, coding, and agentic capabilities. Open-source models are the future.
Z.ai
@sig_eternal Thanks Sig! Open Source is all we need. 🙌
For the past few years, the GLM model series from the Zhipu team (now Z.ai) has been one of the favorites in the open-source community, often as a great, affordable option. With GLM-4.5, however, it's clear they're now aiming for the top.
So, long story short: imagine a model with the agentic coding capabilities like Claude 4, but 2-3x faster, 10x cheaper (based on official API prices), and it's completely open-source.
This. is. simply wild. 🫡
I am just enjoying working wit z.ai. Tho I did noticed that it wont think beyond 5 minutes so I have to so I have to manage the direction in next prompt. But yes I can say it's better than Gemini 2.5 pro and Kimi.ai but I am using these three together to get out from the complicated situations.
I just tested it again with a complex prompt and it went beyond 10 minutes in reasoning :)
started at- Today at 9:22 PM and got Internet disconnected but I am again testing it how well it is able to give reply to this complex task.
Great work.
Z.ai
@devanshvarshney Shout out to Devansh! Feel free to join our Discord community for more info and interactions with other GLMers!
@olliez1 I just joined the Discord server thanks and not just GLM 4.5 I have taken the Gemini 2.5 pro CLI to its extreme and found things with it tried to solve it but I am also stuck with BASIC IDE work for LibreOffice. If there is something for me I would love to work with you guys <3
I’m intrested in how GLM-4.5 balances reasoning quality and efficiency, especially with the MoE setup. The 32B active parameter design seems like a smart trade-off for keeping inference costs manageable.
Z.ai
@santosh__kumar9 With its MoE architecture, GLM-4.5 use 32B active parameters (from 355B total) for efficient inference, while a depth-focused design (more layers, extra attention heads) enhances reasoning. Its hybrid modes (thinking for complex tasks, non-thinking for speed) further optimize this balance.
Haha "keep gravity weak so the flappy bird game is easy". How good is performance on M-series macs (if this is possible at all)?
Z.ai
@steve_androulakis GLM-4.5 is compatible with MLX. You can find more test cases on X. (recommending @ivanfioravanti)
A strong model and open souced, I can't wait to have a try，and how about it's translation ability?
Z.ai
@guanghuadavid It’s a top-tier model. We’ve already integrated it with several well-known translation apps and tools. Feel free to test it via API on OpenRouter or directly on our web chat.
@olliez1 Thanks, we will give it a try
AltPage.ai
Dang, a clean playground for testing MIT-licensed GLM models? That’s exactly what I needed for quick prototyping—no distractions, just pure model tinkering. How often will you update the models?
Z.ai
@joey_zhu_seopage_ai Our tech team is always on the call for improvement. <:
Elisi : AI-powered Goal Management App
Love that you’re pushing open innovation at this scale. Big step for agentic AI devs — already thinking of ways to build with GLM-4.5. Appreciate the contribution!
Z.ai
@venkateshiyer Truly appreciate your comment. We're honored to have users like you! Feel free to join our Discord community for interactions with other GLMers!
我测试了一个，可以直接读取网址，并分析同时给出更好的建议。非常好。
Z.ai
@yicheng_du_easychinese_ Thanks Yicheng.
Loving the minimalist vibe Z AI feels like a refreshing take on model exploration. With an MIT license and GLM variants like Rumination and Reasoning, it’s clear this is more than a demo.
Big kudos for keeping it open, lightweight, and free to dive into!
Z.ai
@vivek_sharma_25 Glad you like it! It means the world to us!
What a powerful model that high performence to fully support agent workflow building.
Haimeta
Love that you can just jump in and try these high-perf GLM models for free—no setup, super smooth UI. Ngl, that's the way to get ppl hooked!
Whoa, GLM-4.5 MoE is absolutely coooooool! The way it handles complex tasks with that mixture-of-experts architecture is mind-blowing - oops, did I just spend three hours playing with it instead of working? Totally worth it though!
@zixuan_lii Great Product! But a little bit slow compared to other Open AI Models.
Haimeta
Congratulations on the launch! Open source is the optimal path to drive the era forward, enabling global mutual benefit.
GLM-4.5 is an impressive advancement in the open-source large language model landscape. Building on the strengths of its predecessors, it demonstrates notable improvements in reasoning, code generation, and multilingual understanding.