BigModel records 5,700,686 monthly visits with -17% month-over-month growth and Freemium pricing. OpnForm records 76,221 monthly visits with +169% growth and Freemium, Free Trial pricing.
Zhipu AI's open platform for GLM large models, multimodal APIs, and agent building
Open-source form builder with AI assistance and unlimited responses
| Dimension / Metric | | |
|---|---|---|
| Official Domain | bigmodel.cn | opnform.com |
| Pricing Model | Freemium | Freemium, Free Trial |
| Monthly Visits | 5.7M (5,700,686) | 76.22K (76,221) |
| MoM Traffic Delta | -1.17M (-17%) | +47.89K (+169%) |
| Primary Market & Share | 🇨🇳 China (85.8%) | 🇺🇸 United States (74.8%) |
| Direct Visits / mo | 4.23M | 37.28K |
| User Rating | 4.6 | 4.5 |
| Supported Platforms | Website | Website |
Zhipu AI's open platform for GLM large models, multimodal APIs, and agent building
Unified access to GLM large language models plus vision, OCR, speech, image, and video endpoints through one account.
Build tool-using agents and expose or consume MCP services to connect models to external systems.
Create managed knowledge bases and retrieval pipelines so models can answer with your own documents.
Tune models on your data and prototype prompts interactively in the browser before shipping.
Open-source form builder with AI assistance and unlimited responses
The full codebase is public and auditable, and you can run OpnForm on the vendor cloud, an EU-hosted instance, or your own infrastructure for complete data ownership.
Optional AI help for building forms and fields, designed to stay out of the way when you would rather write everything yourself.
Conditional logic, computed fields, answer piping, hidden fields and redirect-on-submit rules let one form adapt to many different respondents.
Collect as many responses as you need even on the free plan, with no hidden quotas or surprise overage charges.
Free / Open-sourceDelivers exceptional open-weight reasoning performance at very low cost, but lacks BigModel's broad enterprise multi-modal agent building suite.
Free / Open-sourceDelivers exceptional open-weight reasoning performance at very low cost, but lacks BigModel's broad enterprise multi-modal agent building suite.
Provides industry-leading frontier intelligence and developer ecosystems, but lacks BigModel's specialized GLM architecture and native Chinese language optimizations.
Provides industry-leading frontier intelligence and developer ecosystems, but lacks BigModel's specialized GLM architecture and native Chinese language optimizations.
Offers massive context windows and robust multimodal Gemini APIs, but differs in model architecture and regional enterprise tooling.
Offers massive context windows and robust multimodal Gemini APIs, but differs in model architecture and regional enterprise tooling.
SpecialistAggregates hundreds of global models under one API endpoint, whereas BigModel provides direct native infrastructure for Zhipu's GLM models.
SpecialistAggregates hundreds of global models under one API endpoint, whereas BigModel provides direct native infrastructure for Zhipu's GLM models.
Build powerful forms, surveys and quizzes with AI in minutes
SpecialistOne API for 1,500+ production-ready generative media models
Free / Open-sourceSpecializes in serverless open-source model hosting and dedicated GPU clusters, but provides less native proprietary GLM model integration.
Free / Open-sourceSpecializes in serverless open-source model hosting and dedicated GPU clusters, but provides less native proprietary GLM model integration.
Build forms, surveys and quizzes in seconds — with unlimited free responses
Run, fine-tune, and deploy machine learning models with one line of code
Run, fine-tune, and deploy machine learning models with one line of code
Delivers ultra-fast inference speeds for open-weight models, but focuses less on proprietary enterprise agent building toolkits than BigModel.
Free / Open-sourceOffers highly cost-effective serverless inference for open models, but lacks BigModel's integrated enterprise knowledge base and agent tools.
Privacy-first AI surveys with end-to-end encrypted responses
Privacy-first AI surveys with end-to-end encrypted responses
