Kimi K3 vs DeepSeek V4 Pro vs GLM-5.2: Open-Weight AI Model Comparison

In 2026, three Chinese AI labs released significant open-weight AI models—Kimi K3, DeepSeek V4 Pro, and GLM-5.2—that challenge the notion of open-weight models being budget alternatives to closed systems. Kimi K3, developed by Moonshot AI, is the largest with 2.8 trillion parameters and features native multimodal capabilities, placing fourth on the Artificial Analysis Intelligence Index. DeepSeek V4 Pro excels in cost efficiency and competitive programming, holding a top position on LiveCodeBench, while GLM-5.2 offers superior throughput and focuses on latency-sensitive applications. Each model is licensed under MIT or Modified MIT terms and presents distinct capabilities, benchmarks, and architecture nuances, with implications for deployment logistics and production choices.

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