Z.ai · exact open-weight match
GLM-5.3
Five benchmark checkpoints
Unverified artifact-fit estimate
512GB fit candidate
- Smallest observed quant
- 216.7GB · UD-IQ1_S (6 shards)
- Lower-loss observed quant
- 281.7GB · UD-IQ3_XXS (7 shards)
- 256GB arithmetic
- 256GB Mac Studio; 39.3GB remains before runtime, system, and KV cache
- 512GB arithmetic
- 512GB Mac Studio; 230.3GB remains before runtime, system, and KV cache
- Calculation
- Decimal unified-memory tier minus total decimal GGUF shard bytes; no runtime overhead or KV-cache reservation is included.
- Runtime candidate
- llama.cpp-compatible GGUF runner; current GLM-5.3 support must be confirmed
Not launched or measured on a Mac. Artifact fit does not prove runtime support, speed, context capacity, or benchmark retention.