# ChatGPTCustomizer vs Sider ChatGPTCustomizer records 0 monthly visits with — month-over-month growth and Free pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing. | Metric | [ChatGPTCustomizer](https://openaitools.app/tool/chatgptcustomizer) | [Sider](https://openaitools.app/tool/sider) | | :--- | :--- | :--- | | Website URL | https://chromewebstore.google.com/detail/chatgptcustomizer/ciceinlnjocpopoccfhekjebkpapogoc | https://sider.ai | | Categories | AI API, AI Chatbot, AI Translate, AI Proofreading | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader | | Pricing Model | Free | Freemium | | Monthly Visits | 0 | 2,644,740 | | MoM Growth Rate | — | -10.6% | | Primary Market | Global | United States | | Direct Visits | 0 | 1,699,535 | | Review Score | 1.8 | 4.5 | | Saved Count | 0 | 31 | | 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) ## Sider Sider's premise is that you should not have to leave the page you are reading to use an AI assistant. Its sidebar overlays the browser, detects the content in view, and responds with chat, summaries, translations or explanations using frontier models from multiple providers. The result is a lightweight research and reading workflow: highlight a paragraph, ask for a simpler explanation, translate a PDF and keep the original in sight. Recent versions push Sider beyond chat. Sider Hand is a browser agent that works across real websites and uses your logged-in sessions to carry out multi-step jobs such as comparing prices while shopping, filling forms, doing cross-site research or triaging a Gmail inbox. Sider Code goes the other way, letting you instruct changes to a website's appearance or behaviour in plain language and preserving the customisation for next time. A Create module generates images, videos, slides and documents from the same panel. Pricing moves from a limited free tier to credit-based paid plans aimed at heavier users. Lower plans suit occasional chat, summarisation and translation, while higher tiers add a dedicated cloud computer that keeps the browser agent running around the clock and a larger monthly credit allowance. Sider ships as browser extensions for Chrome and Edge plus desktop and mobile apps for macOS, Windows, iOS and Android, and is used by a very large installed base. **Pricing & Plans:** Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans. - **AI sidebar on any page:** A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab. - **Summarise and chat with documents:** Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material. - **Translation and read-aloud:** Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move. - **Sider Hand browser agent:** Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions. - **Sider Code page customisation:** Describe a change in plain words and have Sider restyle or simplify any website, remembering the modification for future visits. **Strengths:** Works inside the browser you already use, with no context switching; Access to multiple frontier models from one subscription; Strong reading toolkit: PDF chat, YouTube summaries, translation and read-aloud; Increasingly capable agent features for multi-step browser tasks **Limitations:** Useful credits run out quickly on the free and lower tiers; Model availability and quota rules change over time, so expectations must be checked per plan; Some agent and code features depend on a cloud machine and heavier plans [Profile (Markdown)](https://openaitools.app/tool/sider.md) ## Frequently Asked Questions ### How do ChatGPTCustomizer and Sider compare in monthly traffic? ChatGPTCustomizer has 0 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? ChatGPTCustomizer has a month-over-month growth rate of —; Sider has -10.6%. ### 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. Sider: Freemium. Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans. ## 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 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) | | 3 | [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) | | 4 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools. | [.md](https://openaitools.app/tool/monica-ai.md) | | 5 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features. | [.md](https://openaitools.app/tool/merlin-ai.md) | | 6 | [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) | | 7 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider. | [.md](https://openaitools.app/tool/harpa-ai.md) | | 8 | [ChatHub](https://openaitools.app/tool/chathub) | 322,618 | -13.9% | Freemium | Compare GPT, Claude, and Gemini answers side by side in one chat | [.md](https://openaitools.app/tool/chathub.md) | | 9 | [AI Toolbox](https://openaitools.app/tool/chatgpt-toolbox) | 290,140 | +16.9% | Freemium | Organize, search and export your AI chats across ChatGPT, Gemini, Claude and Grok | [.md](https://openaitools.app/tool/chatgpt-toolbox.md) | | 10 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) | --- Source: https://openaitools.app/compare/chatgptcustomizer-vs-sider More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)