Comparing 2 models

Claude Opus 4.5 vs GLM 5.1

Facts first, then task-specific rankings. A highlighted cell is better only for that row, not universally.

metric
Model 1Claude Opus 4.5
Model 2GLM 5.1
Best for
Agentic Coding (#1)
Best Open-Weight LLM for Self-Hosting (#3)
Provider
anthropic
z-ai
Context
200K
205KBest
Input / 1M
$5
$0.97Best
Output / 1M
$25
$3.04Best
Tool use
yesBest
yesBest
Vision
yesBest
Reasoning
yesBest
yesBest
Open-weight
yesBest
Released
Nov 24, 2025
Jan 20, 2025