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Z.ai (Zhipu AI)Game development

GLM (Z.ai) for game development

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.

Not specifically recommended

GLM (Z.ai) is not on our list for game development. Usable for general work, but first look at the options we recommend for game development.

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 game development

Core tasks in game development
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) has a specific GDPR concern. Parent company Zhipu (Beijing) falls under Chinese data and security law, regardless of where the servers are located. For sensitive data, self-hosting the MIT-licensed weights is the recommended mitigation. Weigh this heavily before using it in game development.

Confidentiality and GDPR

GDPR: Caution

Check per subscription what happens to your assets and prompts. Meshy and Convai may use your input and output to improve or train their services on standard plans (with Meshy you can opt out via support), Scenario does this on self-serve plans too and only contractually excludes it on Enterprise, and Ludo.ai reserves the right to train in its terms. On the free plan of Meshy, Meshy owns the output (use under CC BY 4.0 with attribution). Kaedim says it does not use your IP for training and is ISO 27001-certified, Cascadeur runs the AI tools locally and does not collect your animations as training data, and with Unity, training on your content is off by default. Most generative services store data in the US. Only put unreleased art, scripts or player data into a tool once a data processing agreement is in place, and for AI NPCs, check what the model might say to underage players.

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

Questions about GLM (Z.ai) for game development

Is GLM (Z.ai) suitable for game development?
Not specific. GLM (Z.ai) is not on our list for game development; it is broadly usable, but first look at the options we recommend for game development. Keep a professional in the loop for any use.
May I put confidential data into GLM (Z.ai)?
Check per subscription what happens to your assets and prompts. Meshy and Convai may use your input and output on standard plans to improve or train their services (with Meshy you can opt out via support), Scenario does so on self-serve plans too and only contractually excludes it on Enterprise, and Ludo.ai reserves training in its terms. On the free plan of Meshy, Meshy owns the output (use under CC BY 4.0 with attribution). Kaedim says it does not use your IP for training and is ISO 27001-certified, Cascadeur runs the AI tools locally and does not collect your animations as training data, and with Unity training on your content is off by default. Most generative services store data in the US. Only put unreleased art, scripts or player data into a tool after a data processing agreement, and for AI NPCs check what the model could say to minor players. The international service Z.ai runs via 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 yourself or via 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.

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