Zhipu AI / Z.ai (GLM) at a glance
- Provider
- Zhipu AI / Z.ai (GLM)
- Models
- GLM-4.7-Flash, GLM-4.5-Flash, GLM-4.6V-Flash (Z.ai); also GLM-4-Flash-250414, GLM-Z1-Flash, GLM-4V-Flash, GLM-4.1V-Thinking-Flash, CogView-3-Flash, CogVideoX-Flash (BigModel China)
- What's free
- Zhipu's international platform Z.ai lists GLM-4.7-Flash, GLM-4.5-Flash and GLM-4.6V-Flash as Free for input, cached input and output. The China platform (BigModel, bigmodel.cn) also lists several Flash models as 免费 (free), including the CogView-3-Flash image model and the CogVideoX-Flash video model.
- Limits
- Each model has a concurrency limit (simultaneous requests) that depends on your account level. You can see your limits in the console; the docs don't publish the numbers. Note that the "限时免费" (limited-time free) labels on BigModel's price table refer to cache storage on paid models, not to the models themselves.
- Deadline / expiry
- Ongoing (no end date published)
- Extended?
- Not applicable
- Commercial use?
- Not specified on the official page; check the provider's terms.
- Card required?
- Not stated on the official page.
- Phone required?
- Not stated on the official page.
- Region
- Z.ai for international users; BigModel for mainland China
- Last verified
- Official source
- Z.ai Docs: Pricing ↗
How to get it (official steps)
- Create an account on Z.ai (international) or BigModel (China)
- Create an API key in the console
- Call a model listed as Free, such as glm-4.7-flash
- Check your concurrency limit on the rate-limits page in the console
Use one account per person and follow the provider's terms. We don't cover multiple accounts, bulk sign-ups or reselling keys; providers ban them and often pull free offers because of abuse.
How we verified this
We checked this offer on Oct 9, 2026 against the provider's own official docs: Z.ai Docs: Pricing ↗. Where the provider doesn't publish a number, we say “not published” and don't guess. Offers change often; the official page always wins.
Frequently asked questions
Is Zhipu AI / Z.ai (GLM) really free?
Zhipu's international platform Z.ai lists GLM-4.7-Flash, GLM-4.5-Flash and GLM-4.6V-Flash as Free for input, cached input and output. The China platform (BigModel, bigmodel.cn) also lists several Flash models as 免费 (free), including the CogView-3-Flash image model and the CogVideoX-Flash video model.
What are the Zhipu AI / Z.ai (GLM) free limits?
Each model has a concurrency limit (simultaneous requests) that depends on your account level. You can see your limits in the console; the docs don't publish the numbers. Note that the "限时免费" (limited-time free) labels on BigModel's price table refer to cache storage on paid models, not to the models themselves.
When does it end?
Ongoing (no end date published)
Do I need a credit card or phone number?
Card: Not stated on the official page. Phone: Not stated on the official page.
Can I use it commercially?
Not specified on the official page; check the provider's terms.
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