Z.ai · Glm 5 1 · active
GLM-5.1
GLM-5.1 is an open-weight language model published by Z.ai.
zai-org/GLM-5.1Provider availability
Serving endpoints and pricing
| Provider | Route model | Tier | Input | Output | Region | Observed | Source |
|---|---|---|---|---|---|---|---|
 OpenRouterRoute-ready | z-ai/glm-5.1 | Standard routing | $1.26 | $3.96 | Unknown | Aug 28, 2026 | Provider-reported |
This page represents one immutable developer model ID. Serving endpoints, pricing, regions, quantizations, and service tiers attach separately and never create duplicate model records.
Technical specification
Capabilities
Version lineage
Explicit unknowns
- Release date
- Maximum output
- Knowledge cutoff
Comparable peers
Related model comparisons
Questions
GLM-5.1 FAQs
What is GLM-5.1?+
GLM-5.1 is an open-weight language model published by Z.ai. It is developed by Z.ai and its current sourced lifecycle status is active.
What inputs and outputs does GLM-5.1 support?+
GLM-5.1's current record lists Text as input and Text as output.
How much context does GLM-5.1 support?+
The current record lists a 202,752-token context window and does not report a maximum output length.
Is GLM-5.1 available through an API?+
GLM-5.1 is marked as API-available. The directly sourced provider records currently include OpenRouter.
How large is GLM-5.1?+
The current record lists 753.9B total parameters and an unknown active parameter count. Its architecture is GlmMoeDsaForCausalLM.
What capabilities and tasks does GLM-5.1 support?+
GLM-5.1's recorded capabilities are chat, generation, reasoning, and tools. Its supported tasks are text.
Can GLM-5.1 be self-hosted?+
GLM-5.1 is an open-weight model. Self-hosting is supported, and the recorded license is mit.
Does GLM-5.1 have related versions or aliases?+
No predecessor is recorded. No successor is recorded. Recorded aliases are zai-org/GLM-5.1.
Which models can GLM-5.1 be compared with?+
The current compatible peer set includes GLM-5, GLM-5.2, GLM-OCR, NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16, and Kimi-K2-Thinking. Compatibility requires shared sourced modalities and tasks; it does not imply that one model is better. Browse model comparisons →
How current is the Model Markets record for GLM-5.1?+
GLM-5.1 was last verified Aug 28, 2026 from Z.ai's primary source, “zai-org/GLM-5.1 developer model repository.” The evidence is classified as official fact.
Primary evidence