// model_detail
active frontier
GLM-5.1
by ZAI
Zhipu's latest model. Optimized for coding and agent tasks. Available via z.ai and OpenRouter.
Context window 128K 128K tokens
Max output 16K 16K tokens
Pricing /1M tok $0.80 in / $3.20 out per 1M tokens (API)
Released Feb 1, 2026
// specifications
Specs & capabilities
API details
- API model ID
glm-5.1- Internal ID
glm-5-1- Status
- active
- Type
- frontier
Capabilities
- Vision
- 👁️ Yes
- Function calling
- 🔧 Yes
- Knowledge cutoff
- 📅 2025-05
Pricing
- Input
- $0.80 / 1M tokens
- Output
- $3.20 / 1M tokens
- Source
- First-party API pricing
Lifecycle
- Predecessor
- GLM-5
// notes
Additional notes
Latest GLM flagship for coding
// more_from_zai
More ZAI models
GLM-5 Turbo active fast
Fast variant of GLM-5. Lower cost, higher speed.
GLM-5 active frontier
Zhipu's GLM-5 model. Strong reasoning and coding. Available via z.ai API.
GLM-4 Flash active fast
Free/fast GLM model. 128K context. Minimal cost for basic tasks.
GLM-4V legacy multimodal
Vision-capable GLM-4 variant. 128K context, image understanding.
GLM-4 legacy balanced
Previous-generation GLM flagship. 128K context. Superseded by GLM-5.
// external_links