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Z.ai (Zhipu AI)Customer service

GLM (Z.ai) for customer service

Chinese AI lab (Zhipu, international Z.ai) with the open-weight GLM family under MIT licence, particularly strong at programming and agent tasks at low prices.

Recommended for customer service

GLM (Z.ai) performs strongly on coding and agent benchmarks at a fraction of the price, and GLM-5.2 is fully open-weight under the MIT licence; that suits automatically answering frequently asked questions.

GDPR profileOur summary of what the provider itself publishes about your data: EU hosting possible, no training on your data for business use, and self-hosting available. Caution applies to a model with a documented problem, such as an investigation by a regulator. How we measure
GDPR: Caution
QualityQuality from blind duels on LMArena: users choose between two anonymous answers. A difference of about 20 points is noticeable, a few points is noise. How we measure
1483Elo, independent
Editorial scoreOur own assessment on 10 of suitability for professional work, price and privacy. This is a judgement, not a measurement; that is why it always sits alongside the Elo. How we measure
7,7
Entry price
Free
Full GDPR check

What GLM (Z.ai) does in customer service

Core tasks in customer service
  • Automatically answering frequently asked questions
  • Supporting agents with draft replies
  • Summarising and categorising conversations
  • Keeping the knowledge base up to date
What GLM (Z.ai) is strong at
  • Top performance on coding and agent benchmarks at a fraction of the price
  • GLM-5.2 is fully open-weight under the MIT licence
  • 1 million tokens of context on the flagship
  • Affordable Coding Plan subscriptions for tools such as Claude Code

GLM (Z.ai) raises a concrete GDPR concern. Parent company Zhipu (Beijing) is subject to Chinese data and security legislation, regardless of where the servers are located. For sensitive data, self-hosting the MIT-licensed weights is the recommended mitigation. Weigh this heavily before deploying it in customer service.

Confidentiality and GDPR

GDPR: Caution

Be transparent that customers are speaking with AI and ensure a smooth handover to an employee. Protect the privacy of customer data in conversations.

The international service Z.ai runs through JINGSHENG HENGXING TECHNOLOGY PTE. LTD. (Singapore); personal data is in principle processed in Singapore. According to the data processing agreement, API content is processed in real time and not stored. GLM-5.2 is open-weight under MIT and can therefore be fully self-hosted or hosted through an EU provider.

Rule of thumb Use the business variant with a data processing agreement, and keep a human in the loop for decisions that matter.
Caution Parent company Zhipu (Beijing) falls under Chinese data and security legislation, regardless of where the servers are located. For sensitive data, self-hosting the MIT-licensed weights is the recommended mitigation.

Prices

Z.ai ChatFreeFree chatbot at chat.z.ai with GLM-5.x
GLM Coding Plan Lite$18 / monthIntroductory promo $12.60/month; Pro $72 and Max $160 per month
API, GLM-5.3$1.40 / $4.40 per 1MSame price as GLM-5.2 (calls are forwarded to 5.3); GLM-5.3-Flash $0.15 / $0.50; GLM-5 $1.00 / $3.20; GLM-4.7-Flash free

Other models for customer service

Claude for customer serviceAnthropic · editorial 9.01506ChatGPT for customer serviceOpenAI · edition 8.91485Copilot for customer serviceMicrosoft · editorial 8.31485Qwen for customer serviceAlibaba Cloud · editorial 7.91484
All options for customer service

Professional tools that run on GLM (Z.ai)

Inworld AIfree pay-as-you-go

Questions about GLM (Z.ai) for customer service

Is GLM (Z.ai) suitable for customer service?
Yes. GLM (Z.ai) performs strongly on coding and agent benchmarks at a fraction of the price, and GLM-5.2 is fully open-weight under the MIT licence, which suits customer service well. Always assess the specific task and keep a professional in the loop.
May I put confidential data into GLM (Z.ai)?
Be transparent that customers are talking to AI, and make sure they can be handed over smoothly to a staff member. Protect customer data privacy in conversations. The international service Z.ai runs through JINGSHENG HENGXING TECHNOLOGY PTE. LTD. (Singapore); personal data is in principle processed in Singapore. According to the data processing agreement, API content is processed in real time and not stored. GLM-5.2 is open-weight under MIT and can therefore be hosted entirely in-house or through an EU provider.
How much does GLM (Z.ai) cost?
There is Z.ai Chat (Free), GLM Coding Plan Lite ($18 / month), API, GLM-5.3 ($1.40 / $4.40 per 1M). Check current prices on the official site.
Next stepAll 52 options for customer serviceProfessional tools and general assistants side by side, on GDPR profile, price and quality.

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