Get Started with GLM-5.1 on OpenRouter
OpenRouter offers access to GLM-5.1 with a 200k context window. Multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.95 |
| Output tokens | $3.15 |
Capabilities
VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution
About GLM-5.1
Post-training variant of GLM-5 from Zhipu AI with enhanced reasoning and coding capabilities. 744B parameters (40-44B active) in Mixture of Experts architecture. Optimized for complex agentic workflows and multi-step reasoning. Available via Z.AI API (exclusive). Open-weight release of model weights promised but not yet available.
Model Specs
Released2026-03-27
Parameters744B total, 40-44B active
Context200k
ArchitectureMixture of Experts