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GLM Version History

Evolution of the GLM model family: from GLM-4 to GLM-5.3, the positioning and core capabilities of each version.

Version—
GLM-5.3Latest flagship: built on the GLM-5.2 base with fully upgraded post-training, open-source SOTA on complex coding and agent tasks, currently leading at vulnerability discovery
GLM-5.3-FlashFirst natively multimodal GLM-5 model (video / image / text / file input), #4 globally on the AA Intelligence Index, Opus-4.8-level intelligence at 1/10 of GLM-5.3 pricing (limited-time 1/20)
GLM-5.2Previous flagship: lossless 1M context, open-source SOTA coding, dependable on complex long-horizon tasks
GLM-5.1Coding capability aligned with Claude Opus 4.6, significant improvement in long-term tasks, can work independently for up to 8 hours
GLM-5Programming capability aligned with Claude Opus 4.5, proficient in Agentic long-term planning and execution
GLM-5-TurboSpecial optimization for long tasks, good continuity in executing complex long-term tasks
GLM-4.7Comprehensive upgrade of general dialogue, reasoning, and agent capabilities, programming stronger and more stable, better aesthetics
GLM-4.7-FlashFree model, providing inclusive experience, extending the general capabilities of the GLM-4.7 base
GLM-4.6VEnhanced visual reasoning capability, natively supporting tool calls and long contexts, with more stable frontend code cloning effects
GLM-4.5-AirHigh-performance and cost-effective lightweight model, with stable performance in inference, coding, and agent tasks
GLM-4.5A balanced performance and cost general model, suitable for dialogue, analysis, and document processing
GLM-4-PlusFourth-generation flagship model, strong comprehensive capabilities (old version)
GLM-4-LongSupports 1M context length, designed for processing long texts and memory-intensive tasks
GLM-Z1-AirDeep Inference Model, High-Performance Version, retired on November 15, 2025
ChatGLM3-6BThird-generation open-source 6B dialogue model, the first generation ChatGLM series, MIT license