# GPT-ChatDIY

According to OpenAITools.app telemetry verified on 2026-11-11, GPT-ChatDIY (chromewebstore.google.com) is an AI platform indexed under AI Assistant generating 0 monthly visits with a month-over-month traffic delta of +0 (0.0%). Its primary geographic market is Global (— traffic share), and it operates on a Free pricing model. Top competing alternatives by monthly volume include Chatbox (567.17K visits/mo), Typing Mind (533.1K visits/mo), Monica (4.51M visits/mo).

A bring-your-own-API-key ChatGPT extension with local history and privacy guards

## Key Telemetry & Specifications

| Metric | Value |
| :--- | :--- |
| Tool Name | GPT-ChatDIY |
| Handle | gpt-chatdiy |
| Status | active |
| Origin | independent |
| Maintenance | active |
| Official Domain | chromewebstore.google.com |
| Website URL | https://chromewebstore.google.com/detail/gpt-chatdiy/mcmjgbljfnglbjpfiljmhobnnpohdjcb |
| Categories | AI Assistant, AI Chatbot, AI API, AI Detector, Open Source AI Models |
| Pricing Model | Free |
| Monthly Visits | 0 |
| MoM Traffic Change | 0 |
| MoM Growth Rate | — |
| Primary Market | Global |
| Market Share | — |
| Direct Visits | 0 |
| Organic Search Visits | 0 |
| Social Visits | 0 |
| Referral Visits | 0 |
| Email Visits | 0 |
| Review Score | 4 |
| Saved Count | 0 |
| Supported Platforms | Browser Extension |
| Billing Platforms |  |
| Attributes | Features: Browser Extension; Pricing: Free |
| Tags | ChatGPT, API, Extension, History, Cost Estimation, Personal Information Check, Privacy, OpenAI |

## Overview

GPT-ChatDIY is a browser extension for people who prefer to talk to ChatGPT through their own API key instead of the standard web interface. You install it in Chrome, add the API key you generated from your OpenAI account, and get a compact chat panel with a persistent local history. Version 1.4 added a dictionary-based privacy check on top of the earlier regex-based detection, so you can register your own sensitive words and be alerted whenever a prompt contains one.

The extension keeps history in local browser storage only. According to the developer, no personal data is transmitted back to them, and the project's source code is published on GitHub for inspection. It ships with English and Japanese interface languages, a history download option, and a simple cost estimation view so you can keep an eye on how much your API usage is roughly costing.

The roadmap published on the store page mentions token-accurate cost calculation, masking of detected personal information, prompt suggestions for common scenarios, direct CSV download, more interface languages, and multi-turn conversation memory. Until those land, the tool is deliberately minimal: a personal, private client for the OpenAI API rather than a full ChatGPT replacement.

## Pricing & Plans

Free to install. The extension itself is free; you pay OpenAI directly for API usage on your own account, and the built-in estimator gives a rough idea of those costs.

## Key Features & Capabilities

- **Bring your own API key:** Connect the extension to ChatGPT using an OpenAI API key that you generate and control yourself.
- **Local conversation history:** Chat history is saved to browser local storage and can be exported as a download, so your conversations stay on your machine.
- **Personal information alerts:** Regex checks for phone numbers, email addresses, and postal codes, plus a custom dictionary of words that trigger a warning before sending.
- **Cost estimation:** A simple estimator shows an approximate cost for your API usage so spending does not creep up unnoticed.
- **Bilingual interface and open source:** Switch between Japanese and English from the settings, and review the full source code, which the developer publishes on GitHub.

## Primary Use Cases

- **Chat without leaking personal details (Privacy-conscious ChatGPT user):** Use the built-in alerts to catch phone numbers, emails, and other sensitive strings before they leave your browser.
- **Track API spending (Developer on a budget):** Watch the rough cost estimate as you work so your OpenAI API bill stays predictable.
- **Keep an auditable local history (Self-hosting enthusiast):** Store and download your chat history locally, and inspect the GitHub source before trusting the extension with prompts.

## Strengths

- Runs on your own OpenAI API key, so there is no separate subscription
- History stays in local browser storage and can be downloaded
- Privacy checks cover both regex patterns and a user-defined dictionary
- Source code is publicly available on GitHub for review

## Limitations

- Last updated in September 2023, so newer models and features may be unsupported
- Very small user base and only a handful of ratings
- Cost estimation is approximate rather than token-accurate, as the developer notes

## Frequently Asked Questions

### Is GPT-ChatDIY made by OpenAI?
No. It is an independent third-party extension built by a community developer. The store listing explicitly states there is no direct relationship with OpenAI, and you supply your own API key.

### Does it send my chats anywhere?
Prompts go to the OpenAI API because that is how the model is reached. The extension's history and dictionary data are kept in local browser storage, and the developer states that no personal information is sent to them.

### What does the privacy check detect?
By default it uses regular expressions to catch phone numbers, email addresses, and postal codes. You can also register a dictionary file so that any matching word raises an alert before you send the prompt.

### How much does it cost?
The extension is free. You only pay OpenAI for the API tokens your conversations consume.

### What is GPT-ChatDIY's monthly traffic and growth trend?
GPT-ChatDIY currently receives 0 monthly visits, with a month-over-month traffic change of +0 (0.0% growth rate). Its primary source market is Global (— share), including 0 direct visits/mo and 0 organic search visits/mo.

### Is GPT-ChatDIY free? What is its pricing model?
GPT-ChatDIY operates on a Free pricing model. Free to install. The extension itself is free; you pay OpenAI directly for API usage on your own account, and the built-in estimator gives a rough idea of those costs. Supported billing and checkout platforms include: not listed.

### What are the best GPT-ChatDIY alternatives in 2026?
Based on OpenAITools.app category traffic and feature fit, the top five alternatives to GPT-ChatDIY are: 1. Chatbox (567.17K visits/mo); 2. Typing Mind (533.1K visits/mo); 3. Monica (4.51M visits/mo); 4. Sider (2.64M visits/mo); 5. ChatHub (322.62K visits/mo).

### Which platforms and core AI capabilities does GPT-ChatDIY support?
GPT-ChatDIY is classified under AI Assistant, AI Chatbot, AI API, AI Detector, supports the following platforms: Browser Extension, and its core capability tags include: ChatGPT, API, Extension, History, Cost Estimation, Personal Information Check.

## Alternatives

| Tool Name | Monthly Visits | Pricing Model | Compare |
| :--- | :--- | :--- | :--- |
| [Chatbox](https://openaitools.app/tool/chatbox) | 567,170 | Freemium | [Compare](https://openaitools.app/compare/chatbox-vs-gpt-chatdiy) |
| [Typing Mind](https://openaitools.app/tool/typing-mind) | 533,103 | Paid | [Compare](https://openaitools.app/compare/gpt-chatdiy-vs-typing-mind) |
| [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | Freemium | [Compare](https://openaitools.app/compare/gpt-chatdiy-vs-monica-ai) |
| [Sider](https://openaitools.app/tool/sider-ai-extension) | 2,644,740 | Freemium | [Compare](https://openaitools.app/compare/gpt-chatdiy-vs-sider-ai-extension) |
| [ChatHub](https://openaitools.app/tool/chathub) | 322,618 | Freemium | [Compare](https://openaitools.app/compare/chathub-vs-gpt-chatdiy) |
| [Clawdbot (OpenClaw)](https://openaitools.app/tool/clawdbot) | 1,903,068 | Paid, Free | [Compare](https://openaitools.app/compare/clawdbot-vs-gpt-chatdiy) |
| [ChatKit](https://openaitools.app/tool/chatkit) | 3,846 | Paid | [Compare](https://openaitools.app/compare/chatkit-vs-gpt-chatdiy) |
| [Open WebUI](https://openaitools.app/tool/open-webui) | 804,534 | Freemium | [Compare](https://openaitools.app/compare/gpt-chatdiy-vs-open-webui) |
| [Jan](https://openaitools.app/tool/jan) | 291,894 | Free | [Compare](https://openaitools.app/compare/gpt-chatdiy-vs-jan) |
| [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | Freemium | [Compare](https://openaitools.app/compare/gpt-chatdiy-vs-merlin-ai) |
| [Mochii](https://openaitools.app/tool/mochii) | 26,988 | Freemium | [Compare](https://openaitools.app/compare/gpt-chatdiy-vs-mochii) |
| [OpenAssistantGPT](https://openaitools.app/tool/openassistantgpt) | 13,468 | Freemium, Paid, Contact for Pricing | [Compare](https://openaitools.app/compare/gpt-chatdiy-vs-openassistantgpt) |

---
Source: https://openaitools.app/tool/gpt-chatdiy