Head to head

GLM 5.1 vs o4-mini

On a blended workload of one million input tokens and three million output tokens, o4-mini is 1.0× cheaper than GLM 5.1.

GLM 5.1o4-mini
Provider Fireworks AI OpenAI
Input / MTok $1.4 $1.1
Output / MTok $4.4 $4.4
Cache read / MTok $0.26 $0.275
Context window 200,000
Blended 1M in + 3M out $14.60 $14.30
Status ga ga

GLM 5.1 detail   o4-mini detail