GLM-5-3 (Flagship) vs GPT-Image-2.5 (Sunburst)
A direct, empirical evaluation of GLM-5-3 (Flagship) (Zhipu AI & THUDM) against GPT-Image-2.5 (Sunburst) (OpenAI).
GLM-5-3 (Flagship)
Developed by Zhipu AI & THUDM · 744B parameters
Complex algorithmic reasoning, multi-step code synthesis, and long-horizon tool execution.
GPT-Image-2.5 (Sunburst)
Developed by OpenAI · Proprietary Multimodal DiT parameters
High-fidelity typographic rendering, raytracing reflection accuracy, sketch-to-image conditioning, and localized comment inpainting.