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GLM vs. OpenAssistant

LLM Comparison


GLM

Overview

GLM is Z.ai's open-weight model family for reasoning, coding, agents, and long-horizon work. GLM-5.2 is the current generation with a one-million-token context window.


The GLM family began with bilingual pretrained models and evolved through the ChatGLM and GLM-4 generations. GLM-5 scaled the mixture-of-experts architecture to 744B total parameters with 40B active parameters. GLM-5.2, released in June 2026, adds a stable one-million-token context window, stronger long-horizon coding and agent performance, adjustable reasoning effort, and efficiency improvements for sparse attention. Its weights are available under the MIT license.


Initial release: 2022-08-04

Current generation: GLM-5.2

OpenAssistant

OpenAssistant

Overview

OpenAssistant is a project organized by LAION with aim of providing an open source alternative to ChatGPT. Its primary effort is to collected instruct examples to then tune existing LLMs. The first major release is available as part of Hugging Face's HuggingChat.



Initial release: 2023-04-15

GLM

OpenAssistant

Products & Features
Instruct Models
Coding Capability
Customization
Finetuning
Open Source
License MIT Varies
Model Sizes 744B (40B active) 6.7B, 6.9B, 7B, 12B, 30B