GLM 5.3 Prime vs Kimi K3

GLM 5.3 Prime

Z.AI · text → text

GLM-5.3-Prime is the high-speed version of GLM-5.3, with comprehensive advancements in programming and agent capabilities that reach open-source SOTA levels. Its internal programming benchmarks are 50% better than the previous generation, and it can deliver end-to-end production-grade results. It exhibits emergent cybersecurity capabilities, with the CyberGym vulnerability-discovery benchmark achieving the current best. It supports a 1M-token context window, 128K-token output, and three tiers of deep reasoning, making it suitable for long-range, complex tasks.

Kimi K3

Moonshot AI · text, image, video → text

Kimi K3 is Kimi’s flagship model for long-horizon coding and end-to-end knowledge work, with a 1M-token context window and industry-leading intelligence.