GLM 5.1
Z.AI馃嚚馃嚦
z-ai/glm-5.1GLM-5.1 is an incremental upgrade to Z.ai's GLM-5 flagship model, released as open source in April 2026 with improved reasoning and agentic performance. It continues GLM-5's focus on complex systems design and large-scale programming tasks.
Cost rate
0.7x
Context
205K
Released
Apr 7, 2026
Input
Text
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.
Writing, Literature, & Language
#39 路 top 10%
Life, Physical, & Social Science
#39 路 top 10%
Entertainment, Sports, & Media
#40 路 top 10%
Mathematical
#41 路 top 11%
Performance
Median latency and throughput measured across recent requests.
Throughput36 tok/s
Latency