Microsoft Copilot vs Z.ai (GLM) comparison

By starting price alone, Microsoft Copilot is $8.01 cheaper. But price is not everything, so check the highlighted rows in the table below.

Microsoft Copilot and Z.ai (GLM) compared side by side in AI.

CurrencyUSDKRWEUR

Microsoft Copilot

Microsoft's AI assistant built into Windows, Edge and Office

What is good

  • Works directly with Windows, Word and Excel
  • Latest-level models available for free

What could be better

  • Office integration features need a Microsoft 365 subscription
  • Weak personality as a standalone chatbot

Microsoft Copilot official site

Z.ai (GLM)

The GLM model service from China's Z.ai (formerly Zhipu AI). In August 2026 it released GLM-5.3, strong at coding and agents, with open weights, making it a leading open model

What is good

  • Top-tier open coding model with released weights
  • Coding Plan works in 20+ tools including Claude Code, Codex, OpenCode and Cline
  • Off-peak usage is deducted at 50%

What could be better

  • Officially supported languages are mainly English and Chinese (no official Korean materials)
  • GLM-5.3 uses its own license that adds a security review condition for MaaS companies with revenue over $10 billion

Z.ai (GLM) official site

At a glance

Highlighted rows are where they differ.

ItemMicrosoft CopilotVisit siteZ.ai (GLM)Visit site
Starting price$9.99+Official USD price$18+Official USD price
Free tierFree plan availableFree plan available
Korean supportGoodLimited
Main models
  • OpenAI GPT-5 family (Smart/Think Deeper)
  • GPT-5.5/Claude selectable for business
  • MAI in-house models (image/voice)
  • GLM-5.3 (about 753B)
  • GLM-5.3-Flash (about 321B)
  • GLM-5.3-FlashX
  • GLM-5.2
  • GLM-4.6V (vision)
  • Free API: GLM-4.7-Flash/GLM-4.5-Flash
TypeAI servicesAI services
CategoryChatbot/Assistant, Writing/ProductivityOpen Models, Coding, Developer API
CompanyMicrosoft, United StatesZ.ai (formerly Zhipu AI), China
Plans
  • Free
  • M365 Personal $9.99
  • Family $12.99
  • Premium $19.99
  • Pro $99.99
  • For business: Copilot Business $21 (annual), Enterprise $30 (annual)
  • Web chat chat.z.ai (whether free needs checking)
  • GLM Coding Plan from $18/mo (Lite, Pro/Max prices unverified)
  • API pay-as-you-go (per 1 million tokens): GLM-5.3 input $1.40
  • output $4.40, GLM-5.3-Flash $0.15/$0.50, GLM-5.3-FlashX $0.37/$1.25
  • Weights released free
Pros
  • Works directly with Windows, Word and Excel
  • Latest-level models available for free
  • Top-tier open coding model with released weights
  • Coding Plan works in 20+ tools including Claude Code, Codex, OpenCode and Cline
  • Off-peak usage is deducted at 50%
  • The Flash-series API is cheap and some free models are offered
Cons
  • Office integration features need a Microsoft 365 subscription
  • Weak personality as a standalone chatbot
  • Officially supported languages are mainly English and Chinese (no official Korean materials)
  • GLM-5.3 uses its own license that adds a security review condition for MaaS companies with revenue over $10 billion
  • Coding Plan Pro and Max prices are not in the public documents
  • It is a Chinese company's service, so the data policy needs checking

Prices and benefits may change. Check the official site before you pay.

Prices converted at 1 USD = ₩1,327.84 (2026-10-20). Original price shown in brackets. Taxes as listed by each provider.

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