GLM-5.1

GLM-5.1: a glm model from Zhipu AI, ~200K context

Published

scheduleReleased：April 7, 2026

GLM-5.1 is a glm model from Zhipu AI (~200K context, input around $1.4/1M tokens). Suitable for assistants, content generation, knowledge Q&A and business automation

starsCapabilities

codeFunction callingdata_objectStructured output

paymentsContext and pricing

Context limit200,000

Max output131,072

Input price$1.4/ 1M tokens

Output price$4.4/ 1M tokens

Cached input price$0.26/ 1M tokens

descriptionOverview

Overview

GLM-5.1 is provided by Zhipu AI, model ID glm-5.1

Key specs

Context: 200K tokens
Max output: 131.1K tokens
Input price: $1.4/1M
Output price: $4.4/1M

Best for

Consider GLM-5.1 when comparing context length, pricing, multimodal support and relay availability

lightbulbUse cases

Assistants and customer support
Content generation and rewriting
Knowledge Q&A and summarization
Structured extraction

thumb_upStrengths

Very long context (~200K), good for long documents and codebases
Open weights, can be self-hosted
High single-response output limit (~131.1K)

infoLimitations

Pricing and availability vary by upstream and relay; verify with official docs and tests

linkReferences

open_in_newhttps://docs.bigmodel.cn/