# BigModel vs Chert

BigModel records 5,700,686 monthly visits with -17% month-over-month growth and Freemium pricing. Chert records 2,014 monthly visits with -51.8% growth and Contact for Pricing pricing.

| Metric | [BigModel](https://openaitools.app/tool/bigmodel) | [Chert](https://openaitools.app/tool/chert) |
| :--- | :--- | :--- |
| Website URL | https://bigmodel.cn | https://www.trychert.com |
| Categories | Large Language Models (LLMs), AI API, AI Models, AI Agent | AI API, AI Marketing, AI Sales Assistant |
| Pricing Model | Freemium | Contact for Pricing |
| Monthly Visits | 5,700,686 | 2,014 |
| MoM Growth Rate | -17% | -51.8% |
| Primary Market | China | United States |
| Direct Visits | 4,230,503 | 652 |
| Review Score | 4.6 | 4.3 |
| Saved Count | 0 | 0 |
| 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)

## Chert

Chert makes iMessage and FaceTime programmable at scale. Instead of routing messages through carrier A2P SMS pipes, it delivers conversations over Apple's iMessage protocol from verified numbers, so recipients see the familiar blue-bubble thread in the same inbox as their friends and family. When someone is not on iMessage, Chert falls back to SMS or RCS and reports which channel was used.

The platform is more than one-way blasts. Agents can answer FaceTime audio and video calls, run multi-recipient threads with named senders, keep typing indicators and reactions intact, and hand conversations between AI and human teammates. Attachments such as PDFs, decks, links and voice notes stay inside the native thread, and delivery plus read receipts are exposed as webhook-ready events.

Chert is developer-first: you connect your own agent through a REST API and webhook events, then wire conversations into CRM, sales or voice systems. Pricing starts with a free 24-hour trial on a shared line, moving to a $25 per month shared plan or a $250 per month dedicated line per project.

**Pricing & Plans:** Free 24-hour trial on a shared line with 50 FaceTime minutes and unlimited iMessage. Paid plans: Shared at $25 per month with up to 6 customers on a shared line, and Dedicated at $250 per month per line with unlimited users and full inbound plus outbound messaging. Your own LiveKit and model usage is billed separately.

- **iMessage, SMS and RCS delivery:** Send from a phone number into real blue-bubble threads, with automatic fallback to SMS or RCS when a recipient is off iMessage.
- **FaceTime audio and video:** Give your agent a voice and a face so users can talk things through or show the agent what they need help with.
- **Delivery and read receipts:** Track delivery and read status per message, with webhook-ready events so your systems know what happened.
- **Rich attachments in-thread:** Attach PDFs, menus, decks, links, voice notes and contact cards inside the same native conversation.
- **Multi-recipient threads:** Run group conversations with named senders and clean handoffs between AI and human teammates.

**Strengths:** Runs on real iMessage rather than carrier A2P SMS pipes; Agents can also handle FaceTime audio and video; Automatic SMS/RCS fallback for unreachable contacts; Clear published pricing with a free 24-hour trial

**Limitations:** Freemium-style trial is limited to 24 hours; Agent-initiated outbound is restricted on cheaper plans; FaceTime video requires a compatible agent and qualified line

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

## Frequently Asked Questions

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

BigModel has 5,700,686 monthly visits, while Chert has 2,014. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

BigModel has a month-over-month growth rate of -17%; Chert has -51.8%.

### 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. Chert: Contact for Pricing. Free 24-hour trial on a shared line with 50 FaceTime minutes and unlimited iMessage. Paid plans: Shared at $25 per month with up to 6 customers on a shared line, and Dedicated at $250 per month per line with unlimited users and full inbound plus outbound messaging. Your own LiveKit and model usage is billed separately.

## 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 | Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents. | [.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 | One API key for hundreds of AI models from every major provider | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 5 | [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) |
| 6 | [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) |
| 7 | [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) |
| 8 | [Atlas Cloud](https://openaitools.app/tool/atlas-cloud) | 777,031 | -16.4% | Paid | One OpenAI-compatible API for 500+ image, video, audio, and LLM models | [.md](https://openaitools.app/tool/atlas-cloud.md) |
| 9 | [Vapi](https://openaitools.app/tool/vapi) | 662,301 | -11.4% | Freemium | Build, test, and deploy production-grade voice AI agents over API | [.md](https://openaitools.app/tool/vapi.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-chert

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