Small & Fast Z.ai Models
The small, fast Z.ai model is GLM 4.5 Air — the efficient tier at 42 tokens/sec and $0.130 per million input tokens. It trades a few points of raw intelligence for speed and cost, the right call for high-volume, latency-sensitive work.
How this is ranked
Compact, efficient models — the small/mini/flash/haiku tier — ranked by output speed. These trade a little raw intelligence for low cost and high throughput, which is the right tradeoff for chat, classification, extraction and other high-volume work.
Frequently asked
What is the smallest, fastest Z.ai model?
The small, fast Z.ai model is GLM 4.5 Air — the efficient tier at 42 tokens/sec and $0.130 per million input tokens. It trades a few points of raw intelligence for speed and cost, the right call for high-volume, latency-sensitive work.
How many Z.ai models are there?
modelgrep tracks 12 Z.ai models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by GLM 5.2. 1 of them qualify for this ranking.