We introduce GLM-5.3-Flash, the first natively multimodal model in the GLM-5 series. With 320B total parameters and just 18B active parameters, it outperforms GLM-5.2 across benchmarks and real-world workloads at one-tenth the price, while approaching Claude Opus 4.8 on coding and agentic benchmarks.

Unsloth has a UD-IQ4_XS quant at 157 GB https://huggingface.co/unsloth/GLM-5.3-Flash-GGUF