# BigModel vs OpnForm

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.

| Metric | [BigModel](https://openaitools.app/tool/bigmodel) | [OpnForm](https://openaitools.app/tool/opnform) |
| :--- | :--- | :--- |
| Website URL | https://bigmodel.cn | https://opnform.com |
| Categories | Large Language Models (LLMs), AI API, AI Models, AI Agent | AI Forms, No-Code&Low-Code |
| Pricing Model | Freemium | Freemium, Free Trial |
| Monthly Visits | 5,700,686 | 76,221 |
| MoM Growth Rate | -17% | +169% |
| Primary Market | China | United States |
| Direct Visits | 4,230,503 | 37,280 |
| Review Score | 4.6 | 4.5 |
| Saved Count | 0 | 1 |
| Supported Platforms | Website | Website |

## BigModel

BigModel is Zhipu AI's developer-facing platform, offering API access to the company's GLM series of large language models and a broad set of multimodal capabilities. Instead of juggling separate vendors, teams can call text generation, vision-language understanding, OCR, speech recognition, speech synthesis, image generation, and video generation endpoints from one account and one set of credentials.

Beyond raw model access, the platform targets application builders. It includes an agent framework, MCP service support, knowledge-base tooling for retrieval-augmented generation, model fine-tuning workflows, and a model playground for quick testing in the browser. There are also adjacent offerings such as an AI coding assistant and visual/low-code building experiences aimed at teams that want to ship without heavy ML engineering.

For organizations with stricter requirements, BigModel supports private instance deployment and on-premise options, alongside token-based pay-as-you-go and enterprise contracts. This makes it a fit for both individual developers prototyping on a budget and enterprises that need data to stay inside their own infrastructure.

**Pricing & Plans:** BigModel follows a freemium, token-based model: new users typically receive free trial credits, then pay-as-you-go for API usage by tokens consumed. Larger volumes, private instance deployment, and on-premise installations are arranged through contact-for-pricing enterprise agreements. Always confirm current rates on the official pricing page.

- **GLM text and multimodal APIs:** Unified access to GLM large language models plus vision, OCR, speech, image, and video endpoints through one account.
- **Agent and MCP support:** Build tool-using agents and expose or consume MCP services to connect models to external systems.
- **Knowledge base and RAG tooling:** Create managed knowledge bases and retrieval pipelines so models can answer with your own documents.
- **Fine-tuning and playground:** Tune models on your data and prototype prompts interactively in the browser before shipping.
- **Private and on-premise deployment:** Run models in a private instance or on your own hardware for data-residency and compliance needs.

**Strengths:** Broad model coverage, from LLMs to vision, speech, and video, under one platform; Officially backs the GLM family, so model documentation and updates are first-party; Supports private and on-premise deployment for strict data requirements; Includes agent, knowledge-base, and fine-tuning tooling beyond raw API access

**Limitations:** Pricing and documentation are primarily Chinese-first, which can slow English-only teams; Some enterprise capabilities require sales contact rather than transparent self-serve pricing; Token costs can grow quickly for high-volume multimodal workloads

[Profile (Markdown)](https://openaitools.app/tool/bigmodel.md)

## OpnForm

OpnForm is a form-building platform aimed at teams that want modern form UX without the response caps and lock-in typical of commercial survey tools. The editor is drag-and-drop and supports both single-page and multi-step layouts, so a long intake questionnaire can be broken into a conversational flow. Fields can be governed by conditional logic, calculations and answer piping, and forms can be styled with custom themes, brand colours and fonts. AI assistance is available when you want it for drafting questions or fields, but it stays opt-in rather than being forced into the workflow.

What differentiates OpnForm most is its open-source posture. The full codebase is public and auditable, and organisations can choose between the vendor's hosted cloud, an EU-based cloud deployment, or running the software on their own infrastructure. That matters for companies with data-residency rules or internal security reviews. The product also ships team-oriented controls such as shared workspaces, roles and audit history for form and submission activity, along with SSO and SAML for enterprise accounts and 2FA support.

On the automation side, OpnForm connects to the tools teams already use. Submissions can flow to Slack, Discord or Telegram, sync to Google Sheets or Zapier, trigger notifications and routing rules, or be pulled through a documented REST API and webhooks. Payments are handled natively through Stripe, which makes it usable for registration fees and simple product orders. Forms can be distributed by link, embedded on a website or inside Notion, published on a custom domain, or exported as a QR code for offline collection.

**Pricing & Plans:** Freemium. A generous free tier includes unlimited form submissions with no per-response charges, and paid plans add more control, branding removal, team and enterprise features. EU hosting and self-hosting options are available; check the site's pricing page for current tiers.

- **Open-source, self-hostable form builder:** 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.
- **AI assistance when you want it:** Optional AI help for building forms and fields, designed to stay out of the way when you would rather write everything yourself.
- **Smart logic and calculations:** Conditional logic, computed fields, answer piping, hidden fields and redirect-on-submit rules let one form adapt to many different respondents.
- **Unlimited submissions without per-response fees:** Collect as many responses as you need even on the free plan, with no hidden quotas or surprise overage charges.
- **Integrations, payments and API access:** Send data to Slack, Discord, Telegram, Google Sheets or Zapier, take payments via Stripe, and automate anything else with webhooks and a REST API.

**Strengths:** Genuinely open-source with a public codebase and self-hosting path; Unlimited submissions on the free tier with no per-response billing; Strong automation coverage through native integrations, webhooks and a REST API; Enterprise-ready controls including SSO, SAML, roles, audit history and EU hosting

**Limitations:** Self-hosting shifts update, backup and security responsibilities onto your own team; The deep feature set, especially logic and integrations, takes time to learn; Some enterprise compliance capabilities are still described as in progress rather than fully certified

[Profile (Markdown)](https://openaitools.app/tool/opnform.md)

## Frequently Asked Questions

### How do BigModel and OpnForm compare in monthly traffic?

BigModel has 5,700,686 monthly visits, while OpnForm has 76,221. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

BigModel has a month-over-month growth rate of -17%; OpnForm has +169%.

### How does pricing compare?

BigModel: Freemium. BigModel follows a freemium, token-based model: new users typically receive free trial credits, then pay-as-you-go for API usage by tokens consumed. Larger volumes, private instance deployment, and on-premise installations are arranged through contact-for-pricing enterprise agreements. Always confirm current rates on the official pricing page. OpnForm: Freemium, Free Trial. Freemium. A generous free tier includes unlimited form submissions with no per-response charges, and paid plans add more control, branding removal, team and enterprise features. EU hosting and self-hosting options are available; check the site's pricing page for current tiers.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [DeepSeek](https://openaitools.app/tool/deepseek) | 372,761,591 | +4.3% | Freemium | Delivers exceptional open-weight reasoning performance at very low cost, but lacks BigModel's broad enterprise multi-modal agent building suite. | [.md](https://openaitools.app/tool/deepseek.md) |
| 2 | [OpenAI Platform](https://openaitools.app/tool/openai) | 234,678,639 | -9.6% | Paid | Provides industry-leading frontier intelligence and developer ecosystems, but lacks BigModel's specialized GLM architecture and native Chinese language optimizations. | [.md](https://openaitools.app/tool/openai.md) |
| 3 | [Google AI Studio](https://openaitools.app/tool/google-ai-studio) | 112,620,020 | +2% | Freemium | Offers massive context windows and robust multimodal Gemini APIs, but differs in model architecture and regional enterprise tooling. | [.md](https://openaitools.app/tool/google-ai-studio.md) |
| 4 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | Aggregates hundreds of global models under one API endpoint, whereas BigModel provides direct native infrastructure for Zhipu's GLM models. | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 5 | [Fillout](https://openaitools.app/tool/fillout-com) | 3,923,917 | -9.7% | Freemium | Build powerful forms, surveys and quizzes with AI in minutes | [.md](https://openaitools.app/tool/fillout-com.md) |
| 6 | [fal.ai](https://openaitools.app/tool/fal-ai) | 3,093,684 | -3.7% | Paid, pay-as-you-go usage-based pricing | One API for 1,500+ production-ready generative media models | [.md](https://openaitools.app/tool/fal-ai.md) |
| 7 | [Together AI](https://openaitools.app/tool/together-ai) | 1,645,930 | +64.9% | Freemium, Paid | Specializes in serverless open-source model hosting and dedicated GPU clusters, but provides less native proprietary GLM model integration. | [.md](https://openaitools.app/tool/together-ai.md) |
| 8 | [forms.app](https://openaitools.app/tool/forms-app) | 987,157 | -11.2% | Freemium, Paid | Build forms, surveys and quizzes in seconds — with unlimited free responses | [.md](https://openaitools.app/tool/forms-app.md) |
| 9 | [Replicate AI](https://openaitools.app/tool/replicate-ai) | 904,038 | -8.4% | Paid | Run, fine-tune, and deploy machine learning models with one line of code | [.md](https://openaitools.app/tool/replicate-ai.md) |
| 10 | [Fireworks](https://openaitools.app/tool/fireworks-ai) | 659,687 | +6% | Contact for Pricing | Delivers ultra-fast inference speeds for open-weight models, but focuses less on proprietary enterprise agent building toolkits than BigModel. | [.md](https://openaitools.app/tool/fireworks-ai.md) |

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Source: https://openaitools.app/compare/bigmodel-vs-opnform

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