Free API models
¥0CNY / per million tokens
Free text and vision API models with no input, output or cache charges.
- GLM-4.7-Flash text model with 200K context
- GLM-4.6V-Flash vision model
- Free input, output and cache
AI Coding Assistant
- Introduction
- Zhipu AI's BigModel platform offers GLM model APIs, coding plans, agents, MCP services, knowledge bases and fine-tuning.
- Added on
- 10/7/2026
- Pricing
- Freemium
- Official links
- Website, company & support ↗
PRODUCT OVERVIEW
What is BigModel?
BigModel is Zhipu AI's open platform for building with the GLM model family. It provides pay-as-you-go APIs for flagship text and multimodal models such as GLM-5.3 and GLM-5.3-Flash, plus image generation, OCR, speech recognition and speech synthesis models. Beyond raw APIs, the platform bundles agents, web search, MCP services, knowledge bases and model fine-tuning, and offers GLM Coding Plan subscriptions that work with coding tools including ZCode, Claude Code and Cursor. Developers and teams can register to receive free tokens, try models in the experience center, and choose between usage-based API billing and monthly coding subscriptions.
How to use BigModel
- 1
Register and get free tokens
Create a BigModel account to receive the new-user free token package, then open the console to manage keys and resources.
- 2
Try models in the experience center
Use the model trial center to test text and multimodal models before integrating them through the API.
- 3
Call models via API
Follow the quick-start and API documentation to authenticate and send requests, with usage billed per million tokens.
- 4
Subscribe to GLM Coding Plan
Choose a Lite, Pro or Max plan to use GLM models inside supported coding tools such as ZCode, Claude Code and Cursor.
BigModel Features
GLM-5.3 flagship text model with 1M context
GLM-5.3-Flash native multimodal model
Image generation, OCR, speech recognition and speech synthesis models
Agents, web search, MCP services and knowledge bases
Model fine-tuning
GLM Coding Plan subscriptions for coding tools
Pay-as-you-go API billing per million tokens
Free API models including GLM-4.7-Flash and GLM-4.6V-Flash
BigModel Use Cases
Integrating GLM text and multimodal models into applications via API
Using GLM models inside coding tools such as ZCode, Claude Code and Cursor
Building agents and connecting MCP services
Grounding answers with a knowledge base
Fine-tuning models for specific tasks
Batch offline data processing with Batch API
BigModel FAQs
Text and vision models are billed per million tokens with separate input and output prices; longer inputs may move to higher price tiers. Context cache storage is free for a limited time on most models, and cache hits are billed at a lower rate.
Yes. GLM-4.7-Flash (200K context) and GLM-4.6V-Flash are free for input, output and cache.
GLM Coding Plan is a subscription for using GLM models in supported coding tools such as ZCode, Claude Code and Cursor. It comes in Lite, Pro and Max tiers with different usage quotas.
No. Coding Plan quotas are separate from standard API balance and can only be used in officially supported coding tools and product environments.
The plan enforces usage limits per 5 hours and per week to manage resources and ensure fair use; details are in the usage documentation.
All plan users can use GLM-5.3-Flash (OX Alpha) and GLM-5.3.
Yes. Batch API is billed at half the standard API price for large-scale offline data processing.
New registered users receive a free token package, and the platform also offers free model trials in the experience center.
BigModel Official Information
- Company
- 北京智谱华章科技股份有限公司
- Website
- https://bigmodel.cn/
- Documentation
- https://docs.bigmodel.cn/cn/guide/start/quick-start
BigModel Pricing
API models are billed per million tokens with separate input and output prices; some models such as GLM-4.7-Flash and GLM-4.6V-Flash are free. GLM Coding Plan prices shown are monthly rates under continuous monthly billing; quarterly and annual billing offer discounts.
GLM-5.3 API
¥8CNY / per million input tokens
Flagship text model with 1M context, billed per million tokens for input and output.
- 1M context window
- Input 8 CNY per million tokens
- Output 28 CNY per million tokens
- Cache hit 2 CNY per million tokens
- Cache storage free for a limited time
GLM-5.3-Flash API
¥0.8CNY / per million input tokens
Native multimodal model accepting images, video, files and text, billed per million tokens.
- 1M context window
- Input 0.8 CNY per million tokens
- Output 2.8 CNY per million tokens
- Cache hit 0.23 CNY per million tokens
- Input modalities include images, video, files and text
GLM Coding Plan Lite
¥94.4CNY / per month
Entry coding subscription for daily use, billed monthly with continuous subscription.
- 10,000 credits per week
- Gradual access to latest flagship models and features
- Supports 20+ coding tools including ZCode and Claude Code
GLM Coding Plan Pro
¥430.4CNY / per month
High-frequency coding subscription with six times the Lite usage quota.
- 6x Lite usage quota
- All Lite benefits
- Priority access to latest flagship models and features
- Selected MCP tools included
- Faster generation speed
GLM Coding Plan Max
¥862.4CNY / per month
Deep-use coding subscription with fourteen times the Lite usage quota.
- 14x Lite usage quota
- All Pro benefits
- First access to latest flagship models and features
- Priority resource guarantee during peak hours
COMMUNITY REVIEWS
BigModel User Reviews
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