# ChatGPTCustomizer vs ChatKit ChatGPTCustomizer records 0 monthly visits with — month-over-month growth and Free pricing. ChatKit records 3,846 monthly visits with -12.2% growth and Paid pricing. | Metric | [ChatGPTCustomizer](https://openaitools.app/tool/chatgptcustomizer) | [ChatKit](https://openaitools.app/tool/chatkit) | | :--- | :--- | :--- | | Website URL | https://chromewebstore.google.com/detail/chatgptcustomizer/ciceinlnjocpopoccfhekjebkpapogoc | https://chatkit.app | | Categories | AI API, AI Chatbot, AI Translate, AI Proofreading | AI Chatbot, AI API, Large Language Models (LLMs), AI Text-to-Speech | | Pricing Model | Free | Paid | | Monthly Visits | 0 | 3,846 | | MoM Growth Rate | — | -12.2% | | Primary Market | Global | Global | | Direct Visits | 0 | 1,513 | | Review Score | 1.8 | 4.3 | | Saved Count | 0 | 1 | | Supported Platforms | Browser Extension | Website | ## ChatGPTCustomizer ChatGPTCustomizer is a browser extension designed for people who use the ChatGPT API for repeatable tasks. Instead of rewriting the same instructions every time, you define multiple profiles, each tuned to a specific job such as translating between languages, proofreading, summarizing, or teaching a language. Switching profiles tells the assistant exactly which role and behavior to adopt. Profiles can be saved and loaded from CSV or JSON files, which makes them easy to share, back up, or move between machines. The extension also lets you import and export your conversation history as JSON, submit a single thread or all of them at once, and change the role of each response between system, assistant, and user. You can adjust the underlying ChatGPT API variables to fine-tune how answers are produced. For speed, a quick-request shortcut works in any text input: typing //gpt followed by an instruction replaces the text with the model's reply. The extension supports the GPT-3.5-Turbo API and is offered as a free tool, though you supply your own API key, so usage costs come from OpenAI rather than the extension itself. **Pricing & Plans:** The extension is free. You bring your own OpenAI API key, so any usage cost is billed by OpenAI according to your API consumption. - **Multiple reusable profiles:** Save several predefined setups for translation, proofreading, summarization, language teaching, and other recurring tasks. - **Import and export profiles:** Create, save, and load profiles from CSV or JSON files so you can share or back them up easily. - **Conversation history control:** Import and export chat history as JSON, choose a single thread or submit all of them, and change each response's role. - **Inline quick requests:** Type //gpt plus an instruction in any text field to replace it with the model's answer instantly. - **API variable tuning:** Adjust the underlying ChatGPT API variables and use the GPT-3.5-Turbo API for your preferred balance. **Strengths:** Free to install; you only pay OpenAI for API usage; Profiles are portable via CSV and JSON export; Works from any page through the inline //gpt shortcut; Simple, focused feature set that is easy to learn **Limitations:** Requires your own OpenAI API key and basic API knowledge; Built on GPT-3.5-Turbo and last updated in 2023, so it may feel dated; No ratings yet, so community feedback is limited [Profile (Markdown)](https://openaitools.app/tool/chatgptcustomizer.md) ## ChatKit ChatKit is a browser-based interface for talking to large language models using your own API credentials. Rather than a subscription to a hosted assistant, you bring an API key and ChatKit handles the interface layer: streaming responses, conversation history, and a set of productivity features layered on top of the raw chat. The feature set focuses on practical everyday use. Prompt templates let you save and reuse frequently used instructions, bookmarks keep important exchanges close at hand, and real-time streaming keeps replies feeling immediate. Voice input supports dictation, while optional web search and URL fetching let the assistant pull in information from a link you paste. Because you supply the API key, usage costs are billed by your model provider rather than bundled into the tool. ChatKit is an independent product and is not affiliated with or endorsed by OpenAI. **Pricing & Plans:** ChatKit is positioned as a paid client, with model usage billed separately by your own API provider under a bring-your-own-key model. - **Bring-your-own API key:** Connect your own OpenAI API key so you control model choice, spend and data flow rather than paying a bundled subscription. - **Real-time streaming chat:** Responses stream token by token, keeping long conversations responsive and easy to follow. - **Prompt templates:** Save reusable prompts so repetitive tasks take one click instead of retyping the same instructions. - **Voice input and bookmarks:** Dictate prompts by voice and bookmark the conversations or answers you want to return to. - **Web search and URL fetching:** Let replies draw on live web results or the contents of a specific page you link to. **Strengths:** You control model access and spend through your own API key; Prompt templates and bookmarks speed up repeated workflows; Voice input plus web search and URL fetching in one interface; Independent client, so no vendor lock-in on model choice **Limitations:** Requires an API key and comfort with API billing; You pay your model provider separately from the client; A thinner feature surface than full hosted assistant platforms [Profile (Markdown)](https://openaitools.app/tool/chatkit.md) ## Frequently Asked Questions ### How do ChatGPTCustomizer and ChatKit compare in monthly traffic? ChatGPTCustomizer has 0 monthly visits, while ChatKit has 3,846. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? ChatGPTCustomizer has a month-over-month growth rate of —; ChatKit has -12.2%. ### How does pricing compare? ChatGPTCustomizer: Free. The extension is free. You bring your own OpenAI API key, so any usage cost is billed by OpenAI according to your API consumption. ChatKit: Paid. ChatKit is positioned as a paid client, with model usage billed separately by your own API provider under a bring-your-own-key model. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) | | 2 | [DeepSeek](https://openaitools.app/tool/deepseek) | 372,761,591 | +4.3% | Freemium | High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs. | [.md](https://openaitools.app/tool/deepseek.md) | | 3 | [Poe](https://openaitools.app/tool/poe) | 5,894,702 | +9.1% | Freemium | One app to chat with GPT, Claude, Gemini and hundreds of other AI models | [.md](https://openaitools.app/tool/poe.md) | | 4 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | [.md](https://openaitools.app/tool/languagetool.md) | | 5 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | [.md](https://openaitools.app/tool/sider.md) | | 6 | [Chatbot App](https://openaitools.app/tool/chatbot-app) | 2,170,883 | -9.7% | Freemium | Chat with 30+ leading AI models in one clean, fast workspace | [.md](https://openaitools.app/tool/chatbot-app.md) | | 7 | [Open WebUI](https://openaitools.app/tool/open-webui) | 804,534 | -2.8% | Freemium | Self-hosted AI workspace for local and cloud models | [.md](https://openaitools.app/tool/open-webui.md) | | 8 | [AIPRM](https://openaitools.app/tool/aiprm) | 708,870 | -6.9% | Freemium, Paid | A prompt library and management layer for ChatGPT and other AI models | [.md](https://openaitools.app/tool/aiprm.md) | | 9 | [Chatbox](https://openaitools.app/tool/chatbox) | 567,170 | -16.1% | Freemium | One privacy-first AI client for GPT, Claude, Gemini and more | [.md](https://openaitools.app/tool/chatbox.md) | | 10 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | One browser agent that combines every major AI model with web automation | [.md](https://openaitools.app/tool/harpa-ai.md) | --- Source: https://openaitools.app/compare/chatgptcustomizer-vs-chatkit More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)