Lao Guo's Learning Space

Oct 31, 2026 · Artificial Intelligence

GLM-5.3 Flash vs DeepSeek-V4.1 Flash: 20% Faster Code Gen on M5 Ultra

Benchmark comparison of GLM-5.3 Flash and DeepSeek-V4.1 Flash on Mac Studio M5 Ultra 256GB shows GLM-5.3 Flash achieves 84.9 vs 71.2 tok/s in code decoding (1.2x), 109.2 vs 93.6 tok/s in 8-request concurrency, and mixed first-token latency results across 16K-128K contexts, with caveats about different inference engines and no quality evaluation.