Z.ai (GLM)

Name: Z.ai (GLM)
Brand: Z.ai (formerly Zhipu AI)
Price: 18 USD
Availability: InStock

Z.ai (formerly Zhipu AI), China, z.ai

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

Open Models Coding Developer API

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CurrencyUSD KRW EUR

Personal starting price$18+Official price in USD

Free tierFree plan available

Korean supportLimited

Price checked 2026-10-19, source: docs.z.ai/guides/overview/pricing. Prices and benefits may change. Check the official site before you pay.

Some information has not yet been verified against official sources. Please check the official site before you pay.

Pros

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

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

These are opinions compiled by Pickx from public sources.

At a glance

Z.ai is the global brand of the Chinese AI company Zhipu AI, which makes the GLM model series. In August 2026 it released GLM-5.3, strong at coding and agent tasks, and about 2 weeks later released the weights on Hugging Face, which became a talking point. It offers web chat (chat.z.ai), the GLM Coding Plan subscription for coding tools, and an API for developers. It is newly added to the Pickx list this time.

Full model list

Model	Type	Features	Plans that can use it
GLM-5.3	Flagship LLM	About 753B specialized for coding/agents weights released under its own 'glm-5.3' license	Chat Coding Plan API free weights
GLM-5.3-Flash	Lightweight LLM	About 321B / MIT license / shown as the default model on chat.z.ai	Chat Coding Plan API free weights
GLM-5.3-FlashX	High-speed LLM	Faster serving version of Flash	API
GLM-5.2 5.1	Previous flagships	Automatically routed to GLM-5.3 in Coding Plan	API
GLM-4.6V GLM-OCR	Vision/document recognition	Image understanding OCR	API
GLM-4.7-Flash GLM-4.5-Flash GLM-4.6V-Flash	Free API models	Older lightweight models that can be called at no cost	API (free)

Plans

Plan	Price	What you can do	Usage limit	Features
Web chat (chat.z.ai)	Known to be free (needs checking)	Chat based on GLM-5.3-Flash	Official limits not disclosed	No pricing information on the official page
GLM Coding Plan Lite	From $18/mo	GLM-5.3 GLM-5.3-Flash	2,000 credits per 5 hours 10,000 credits per week	Works with Claude Code/Codex/OpenCode/Cline, etc. 50% deduction at off-peak times
GLM Coding Plan Pro	Unverified	Use of GLM Coding Plan	12,000 credits per 5 hours 60,000 credits per week	About 6x the usage of Lite
GLM Coding Plan Max	Unverified	Use of GLM Coding Plan	28,000 credits per 5 hours 140,000 credits per week	For heavy coding
API pay-as-you-go	Per 1 million tokens, GLM-5.3 input/output $1.40/$4.40 Flash $0.15/$0.50 FlashX $0.37/$1.25	Cached input discount some older Flash models free	Official limits not disclosed	For developers

Who should choose this plan

Web chat: People who want to casually try the latest Chinese open models.
GLM Coding Plan Lite: Developers who use coding agents such as Claude Code and want to save money.
Pro, Max: Heavy users who run agents all day.
API pay-as-you-go / weights: Development teams that want to attach a cheap, high-performance model to their own service.

Notes

Information checked on: 2026-10-13
Items needing verification: the GLM-5.3 release date (2026-08-18), the weights release date (2026-08-25), the license terms, and whether chat.z.ai is free are based on external sources. The Coding Plan $18/mo is the 'starting price' in the official documents, and we assume it corresponds to the Lite plan.
Sources: Z.ai API pricing, GLM Coding Plan documentation, Hugging Face GLM-5.3, GLM-5.3 launch article, Weights/license analysis

Good for

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Prices converted at 1 USD = ₩1,329.49 (2026-10-19). Original price shown in brackets. Taxes as listed by each provider.

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