Z.ai's flagship GLM model for complex software engineering and agentic work. It keeps GLM-5.2's base model, with post-training gains in coding, long-horizon tasks and cybersecurity, and currently accepts text input only.
- Modalities
- text → text
- In / out price30% off
List price $1.40 / $4.40$0.976972 / $3.070483per 1M tokens- Context
- 1Mtokens
- Released
- 2026-08-18
Pricing
Prices in US dollars, charged from your prepaid balance as you go. No subscription.
30% off30% below the list price, on every token price.
- Input
List price $1.40$0.976972/ 1M tokens- Output
List price $4.40$3.070483/ 1M tokens- Cache read
List price $0.26$0.181438/ 1M tokens- Cache write
- $0/ 1M tokens
Specs
Limits and capabilities as published by the model’s provider.
- Context
- 1Mtokens
- Max output
- 128Ktokens
- Input types
- text
- Output types
- text
- Released
- 2026-08-18
- Open weights
- Hugging Face
- License
- GLM-5.3 License
Call this model
The examples read your key from the CHEAPAIMODEL_API_KEY environment variable.
curl https://api.cheapaimodel.ai/v1/chat/completions \
-H "Authorization: Bearer $CHEAPAIMODEL_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "glm-5.3",
"messages": [{"role": "user", "content": "Hello!"}]
}'Endpoints
Endpoints that accept this model, each with its API reference.
- API reference
POST /v1/chat/completionsChat Completions · OpenAI compatible - API reference
POST /v1/responsesResponses · OpenAI compatible
Compare with other models
GLM-5.3 side by side with each other model in the catalog: price, context and the same code.
From the blog
Posts on our blog that cover GLM-5.3: pricing, setup and troubleshooting.
- Zhipu GLM API on Z.ai: Sign-Up, Card Payment and 3DS
Using Zhipu's GLM API outside China? Z.ai vs bigmodel.cn, sign-up, credit card top-ups and the 3DS catch, and how to call GLM-5.3 with one account.
- GLM API Pricing: Models, Token Costs, and Getting Started
Compare GLM-5.3 and Flash API prices, calculate cached and uncached costs, and understand how API billing differs from the GLM Coding Plan.
- OpenRouter Alternatives: Pricing and Trade-offs
Compare cheapaimodel and direct model APIs with OpenRouter. Learn how to check pricing, compatibility, routing, and migration costs before switching.
More models from Z.ai
Other models from the same provider in the catalog.
Z.ai: GLM-5.3-Flash
The first natively multimodal model in Z.ai's GLM-5 series, taking text, image, video and file input. Z.ai positions it as stronger than GLM-5.2 at a much lower cost.
1M context · $0.104676 / $0.348919