Zhipu AI's GLM model family — Chinese-English bilingual models with rapid iteration from GLM-4.6 to GLM-5.3, delivering strong reasoning and generation quality.
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glm-5.3
Transparent pricing with no hidden fees. Pay only for what you use.
Per 1M tokens
| Rate | GoldCurrent price | Platinum | Diamond | Official | Your savings |
|---|---|---|---|---|---|
| Input | 11.2~$1.12 | 10.64~$1.064 | 10.08~$1.008 | 14~$1.4 | 20% |
| Cached input | 2.08~$0.208 | 1.976~$0.1976 | 1.872~$0.1872 | 2.6~$0.26 | 20% |
| Output | 35.2~$3.52 | 33.44~$3.344 | 31.68~$3.168 | 44~$4.4 | 20% |
Access Zhipu AI's GLM family from GLM-4.6 to GLM-5.3. Frontier bilingual models optimized for Chinese and English with strong reasoning capabilities.
50K+
Active Users
99.9%
Uptime
2x
Faster
70%
Cost Savings
What makes GLM models a strong choice for bilingual AI
How teams use GLM models in production
Start using Zhipu's models in minutes
Create your free APIMart account and top up your balance.
Generate an API key to access GLM models programmatically.
Use the playground above or integrate via the OpenAI-compatible API.
What developers say about our GLM API
“GLM-5 handles bilingual customer support better than any other model we've tested.”
Wei Zhang
Support Manager
“The rapid iteration from GLM-4.5 to GLM-5 shows Zhipu is serious about quality. Each version is noticeably better.”
Alex Chen
AI Engineer
“GLM-4.5-Air is our choice for high-volume Chinese text processing. Great quality at low cost.”
Sarah Li
Backend Developer
“We use GLM for Chinese content moderation. It understands context and nuance well.”
Mike Wang
Trust & Safety Lead
“Clean API, competitive pricing, and reliable uptime. Easy choice for our bilingual chatbot.”
Emily Zhou
Product Manager
“GLM-4.7 strikes a great balance between speed and quality for our summarization pipeline.”
David Liu
ML Engineer
Common questions about using the GLM API
We offer the latest GLM-5.3 and GLM-5.3 Flash, plus GLM-5.2, GLM-5.1, GLM-5, GLM-4.7, and GLM-4.6.
GLM-5.3 is the latest model from Zhipu AI, and GLM-5.3 Flash is its faster, lower-cost Flash variant. Earlier GLM-5.x and GLM-4.x models remain available.
Token-based pricing (input + output). GLM-5.3 Flash is the low-cost option, and GLM-5.3 is the premium tier. Check the pricing table above for specific rates.
Yes. GLM models use the standard chat completions format and work with the OpenAI SDK.
Yes. Your API data is not stored or used for training. All requests are encrypted.
GLM-5.3 Flash for fast, low-cost tasks. GLM-5.3 for maximum quality. Earlier GLM-5.x and GLM-4.x models remain available — compare their prices in the table above.
The Zhipu AI GLM API is billed per million input and output tokens. The pricing table on this page lists every available model, and the prices shown are Gold member rates (20% off). Platinum and Diamond members save even more, up to 28%, and you only pay for successful requests.
Sign up for APIMart, open the API Keys page in your dashboard, and create a key. The same key works for the Zhipu AI GLM API and every other model on the platform, with pay-as-you-go billing and no subscription.
Call APIMart's OpenAI-compatible Chat Completions endpoint with your APIMart API key and set model to glm-5.3 or glm-5.3-flash. The rest of the GLM 5 API lineup (glm-5, glm-5.1 and glm-5.2) uses the same request format, so switching only means changing the model ID. Parameters and code examples are in the APIMart docs (docs.apimart.ai).
You can reach us via the live chat in the bottom-right corner, email us at [email protected], or join our Discord community. Our team will get back to you as soon as possible.
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