# CompanionGPT

According to OpenAITools.app telemetry verified on 2026-11-11, CompanionGPT (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 Freemium, Paid pricing model. Top competing alternatives by monthly volume include Merlin AI (1.38M visits/mo), Monica (4.51M visits/mo), HARPA AI (537.46K visits/mo).

Highlight text and let AI reply, rewrite, or summarize it on the spot

## Key Telemetry & Specifications

| Metric | Value |
| :--- | :--- |
| Tool Name | CompanionGPT |
| Handle | companiongpt |
| Status | active |
| Origin | wrapper |
| Maintenance | active |
| Official Domain | chromewebstore.google.com |
| Website URL | https://chromewebstore.google.com/detail/companiongpt/kkplgofmfcjdcdglgmanofklneemfpcl |
| Categories | AI Assistant, AI Reply, AI Rewriter, AI Summarizer |
| Pricing Model | Freemium, Paid |
| 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 | 2.2 |
| Saved Count | 0 |
| Supported Platforms | Browser Extension |
| Billing Platforms |  |
| Attributes | Features: Browser Extension; Pricing: Freemium; Pricing: Paid |
| Tags | AI marketing, Content creation, Social media management, AI writer, AI designer, Social media scheduler, AI image generator |

## Overview

CompanionGPT is a small Chrome extension built around one simple habit: highlight something on a web page, then let an AI act on it. Instead of copying text into a separate chatbot window, the extension intercepts your selection and offers reply, rewrite, and summarize actions as a compact popup, so the workflow stays inside the page where the original conversation or article lives.

The reply mode is aimed at communication — it tries to produce a response that matches the tone and context of the thread you are reading, which makes it handy for inbox and chat work. Rewrite mode paraphrases or rephrases a block of text, and summarize mode compresses longer passages into shorter takeaways. There is also a persuasive tone option for shaping more convincing marketing or sales copy.

The extension is deliberately minimal: it is only a few dozen kilobytes, ships in English, and hands model access off to your own key. Two credentials are required before it will work — an active Companion-GPT license key, an email address, and a ChatGPT OpenAI API key. That means the extension itself is a thin client and your actual AI spend is billed by OpenAI. The listing has no user ratings and its last update was in July 2023, so treat it as a small, stable utility rather than a heavily maintained product.

## Pricing & Plans

Freemium with a paid component: the extension requires a Companion-GPT license key as well as your own ChatGPT OpenAI API key, so model usage is billed by OpenAI on top of any license cost. Exact prices are not published on the extension listing.

## Key Features & Capabilities

- **Contextual reply drafting:** Generates a reply that fits the tone and context of the highlighted conversation, useful for email threads and chat messages.
- **One-click rewriting:** Paraphrases or rephrases the selected passage so you can reuse or reframe content quickly.
- **Summarize with key insights:** Condenses longer text into a shorter summary and surfaces the main points rather than a raw extract.
- **Persuasive tone option:** Shapes wording toward more convincing, influential phrasing for marketing and sales copy.
- **Bring-your-own OpenAI key:** Model calls run through your own ChatGPT API key, with an additional Companion-GPT license key required to activate the tool.

## Primary Use Cases

- **Fast outbound replies (Sales and marketing teams):** Highlight an email or message and generate a fitting response without switching tabs, keeping outreach moving during busy blocks.
- **Rephrasing campaign copy (Content creators):** Rewrite product blurbs, ad lines, and social captions to get variation without rewriting from scratch.
- **Skimming long articles (Researchers and analysts):** Summarize dense articles and reports into key insights so you can decide what deserves a closer read.
- **Keeping a consistent tone (Support and community staff):** Draft replies that match the surrounding thread so canned answers do not feel disconnected.

## Strengths

- Very small footprint, so it does not slow the browser noticeably
- Works directly on highlighted text in the page, avoiding copy-paste into another tool
- Covers the three most common writing chores — reply, rewrite, summarize — in one popup
- Persuasive tone option adds flexibility for marketing and sales copy

## Limitations

- Requires both a license key and your own OpenAI API key, which is friction for new users
- No user ratings and no update since July 2023, so long-term maintenance is unclear
- Interface and docs are English-only, with no built-in free tier of model credits

## Frequently Asked Questions

### Do I need my own OpenAI API key?
Yes. The extension listing states that you need an active Companion-GPT license key, an email address, and an OpenAI API key for ChatGPT before the features will work. Model usage is therefore charged by OpenAI according to your own account.

### How much does CompanionGPT cost?
It is listed as freemium with a paid tier. The extension itself is free to install, but the license key is a paid component and your OpenAI usage adds a separate cost. The listing does not publish specific prices.

### Can it summarize rather than just rewrite?
Yes. Summarize mode compresses a highlighted passage into a shorter version that pulls out the key insights, which is helpful for scrolling through long articles or reports.

### Does it store my data?
The developer's disclosure on the Chrome Web Store says data is not collected or used, not sold to third parties, and not used for creditworthiness or lending decisions.

### What is CompanionGPT's monthly traffic and growth trend?
CompanionGPT 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 CompanionGPT free? What is its pricing model?
CompanionGPT operates on a Freemium, Paid pricing model. Freemium with a paid component: the extension requires a Companion-GPT license key as well as your own ChatGPT OpenAI API key, so model usage is billed by OpenAI on top of any license cost. Exact prices are not published on the extension listing. Supported billing and checkout platforms include: not listed.

### What are the best CompanionGPT alternatives in 2026?
Based on OpenAITools.app category traffic and feature fit, the top five alternatives to CompanionGPT are: 1. Merlin AI (1.38M visits/mo); 2. Monica (4.51M visits/mo); 3. HARPA AI (537.46K visits/mo); 4. Kome AI (174.91K visits/mo); 5. Walles.ai - Your AI Browser Sidekick (8.31K visits/mo).

### Which platforms and core AI capabilities does CompanionGPT support?
CompanionGPT is classified under AI Assistant, AI Reply, AI Rewriter, AI Summarizer, supports the following platforms: Browser Extension, and its core capability tags include: AI marketing, Content creation, Social media management, AI writer, AI designer, Social media scheduler.

## Alternatives

| Tool Name | Monthly Visits | Pricing Model | Compare |
| :--- | :--- | :--- | :--- |
| [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-merlin-ai) |
| [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-monica-ai) |
| [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-harpa-ai) |
| [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-kome-ai) |
| [Walles.ai - Your AI Browser Sidekick](https://openaitools.app/tool/walles-ai-your-ai-browser-sidekick) | 8,309 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-walles-ai-your-ai-browser-sidekick) |
| [HyperWrite](https://openaitools.app/tool/hyperwrite-ai) | 255,429 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-hyperwrite-ai) |
| [Sider](https://openaitools.app/tool/sider) | 2,644,740 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-sider) |
| [Glasp](https://openaitools.app/tool/glasp) | 889,564 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-glasp) |
| [Chippy](https://openaitools.app/tool/chippy) | 2,987 | Freemium | [Compare](https://openaitools.app/compare/chippy-vs-companiongpt) |
| [Tactiq](https://openaitools.app/tool/tactiq) | 6,521,542 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-tactiq) |
| [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | Freemium | [Compare](https://openaitools.app/compare/companiongpt-vs-glarity-summarize-google-and-youtube) |
| [RewriteBar](https://openaitools.app/tool/rewritebar) | 26,294 | Freemium, Free Trial, Paid | [Compare](https://openaitools.app/compare/companiongpt-vs-rewritebar) |

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Source: https://openaitools.app/tool/companiongpt