Compose AI

What is Compose AI?

Compose AI is an AI writing assistant that operates as a Chrome extension. It integrates features such as auto-completion, suggestion generation, email drafting, and text rewriting directly into the web form fields that users are already using, thereby reducing the need to switch back and forth between writing tools and browser tabs.

The main website at present belongs to Compose AI, Inc., and its products are focused on everyday web content creation, rather than managing long documents, maintaining team knowledge bases, or providing developer platforms. Before using it, it is necessary to install extensions and log in with an account based on the required functions.

A one-sentence summary

Compose AI, through a Chrome extension, offers intelligent text completion, the ability to generate any type of text, assistance with drafting email replies, and options for adjusting tone – making it suitable for users who frequently write English emails, documents, and marketing content.

Product composition and output format

Main functions

Intelligent cross-page completion

Auto-completion is a core feature of Compose AI. When users type in the input fields on compatible web pages, the system suggests subsequent text based on what has already been entered; once the suggested text seems appropriate, the user can accept it by pressing Tab.

• It is suitable for completing emails, chat messages, sentences in documents, and repetitive business phrases.
• The suggestions depend on the current context; short sentences, technical terms, and factual data still require manual verification.
• The official website emphasizes the use of multiple tools, but the editor structure of different websites may affect compatibility and the way recommendations are displayed.

Double slashes generate any text.

Type two slashes at a supported input location to access the generation tool, after which you can describe the desired content in natural language. The official examples include blog paragraphs, marketing copy, titles, research topics, and general descriptions.

This capability is better suited for quickly creating a first draft; it cannot replace the retrieval of factual information. Data such as product specifications, regulations, news articles, or citations must be verified again.

Email drafting and quick replies

Compose Email allows a complete email to be created based on a few keywords, while Easy Email Reply generates replies by taking into account the context of the original email. It is suitable for handling frequent tasks such as follow-ups, confirmations, invitations, customer communications, and internal collaboration.

• The email writing assistant can be opened using Alt plus G on Windows and most non-Mac keyboards.
• On Mac, you can use Option plus G to open the same entry.
• Before generating a reply, check the recipient, the commitments made, the date, the amount, and the tone.

Select the text to rewrite.

Users can select existing text and modify it to make it more friendly, more formal, shorter, or longer. This feature allows for adjusting the tone while preserving the original meaning, without the need to rewrite the entire passage.

Personalized writing style

The official website states that the platform learns a user’s writing style and provides personalized phrases; the premium version offers additional personalized features. Since the public information available does not specify the training time required, the adjustable parameters, or ways to delete data, sensitive business content should not rely solely on this function.

Assistive writing on common web pages

The official welcome page lists Gmail, Google Docs, and WhatsApp clearly, while specifying recruitment, copywriting, blogging, social media, and resumes as possible use cases. Whether a particular website can support full functionality depends on actual testing after the extension is installed.

The workflow from input to final draft

1. Install the Compose AI extension in Chrome on your desktop, fix the position of the extension icon, and log in to your account.
2. Open the webpage on which you want to write, enter the existing content in the input field, or use double slashes to specify the text that needs to be generated.
3. View the auto-completion or draft generated, use Tab to accept the suggested options, or continue to modify the suggestions.
4. Select the sentences that are not accurate enough, and use rewriting techniques such as shortening, expanding, or adjusting the tone to make it more friendly or formal.
5. Each element – facts, names, dates, attachments, tone, and copyright – is checked individually, after which the final sending or publication is carried out manually.

Usage tutorial

Install and complete the initial setup.

1. Use the desktop version of Chrome to open the Compose AI page in the extension store.
2. Confirm the publisher information, additional permissions, version, and privacy settings before proceeding with the installation.
3. Fix Compose AI in the extension menu of the browser toolbar to make it easy to check its status and make settings.
4. Follow the instructions to register or log in, and enter two slashes on the official welcome page to generate a test.
5. Open the frequently used websites to conduct tests on auto-completion, rewriting, and email drafting in order to verify compatibility.

Write emails using Compose AI

1. Open Gmail or another compatible web-based email service, and create a new message.
2. Enter the recipient, background, items that must be included, and the desired tone.
3. Content can be generated by using double slashes, or the Mail Assistant can be opened by pressing Alt+G or Option+G.
4. Adjust the length and level of formality according to the context, and remove any unconfirmed commitments.
5. After verifying the recipient, attachments, time, and sensitive information, the user manually sends it.

Rewrite an existing piece of text

1. In the web editor, select the sentence or paragraph that needs to be adjusted.
2. Choose options such as shortening, expanding, rewriting, in a friendly tone, or in a formal tone.
3. Compare the rewritten version with the original text to ensure that facts, terms, and meanings remain unchanged.
4. Edit further as needed, and retain the version that is most appropriate for the audience and the channel of distribution.

Which users are it suitable for

• Workplace users: Quickly draft daily emails, confirm information, follow up on tasks, and send internal notifications.
• Sales and Customer Success staff: Prepare initial drafts for outreach, responses, and follow-up communications, but human verification is required to confirm commitments.
• Recruiter: Prepare job descriptions, contact information for candidates, and follow-up emails after interviews.
• Content and marketers: Create titles, product descriptions, calls to action, and social media drafts.
• Students and non-native writers: Adjusting English expressions, tone, and sentence length, and learning different ways of writing.
• Those who use Gmail or Google Docs frequently: can get suggestions directly on the page where they are working.

Typical use cases

• Generate a well-structured email for confirming a meeting or following up on a project, based on several key points.
• Provide more concise, formal, or friendly versions of existing replies.
• In Google Docs, use it to complete paragraphs, expand on ideas, or create subheadings.
• Prepare draft copy that can be further edited for product pages, campaigns, and social media.
• Quickly complete the reusable business expressions, and then make manual adjustments based on the customer’s background.
• Formulate polite replies in web chat tools, but do not send them automatically on behalf of the user.

Product advantages

• Lightweight work interface: The core functions are available directly in the input fields of the browser page.
• It covers multiple writing tasks: completion, generation, email replies, and rewriting – all within the same extension.
• The learning cost for using it is low: double slashes, Tab, and shortcut keys are all easy to remember.
• Manual control is retained: Users can accept, ignore, or continue editing each suggestion.
• There is a long-term free version available: regular users can first test compatibility and output quality.
• The official site provides a welcome page and a brief help center; the options for subscription management and refunds are clearly indicated.

Usage restrictions and precautions

• The Chrome Web Store currently lists only English as an option for the language of the extension interface; there are no detailed guarantees provided regarding the quality of Chinese input and output.
• Browser extensions need to access the context of the current page in order to provide suggestions, and they are not suitable for handling passwords, medical records, identification documents, or confidential business information.
• AI may alter numbers, negations, tone, and facts; manual verification is required before sending emails or publishing content.
• Different web page editors may have compatibility issues; the descriptions provided on the official website do not guarantee that all input fields on every website will function properly.
• The public pricing page does not show the amount for the premium version, which can be verified accurately; before making a purchase, it is necessary to check the local currency amount, taxes, and renewal period on the account upgrade page.
• The terms of service still stipulate restrictions on personal, internal, and non-commercial use; prior approval from the authorities must be obtained regarding the scope of authorization before any commercial use or use on behalf of clients.
• The product does not offer public APIs, SDKs, or self-hosted versions, making it unsuitable for development projects that require batch generation on the server side and automated workflows.
• The figures on the official website and those shown in the Chrome Store for the number of users are not consistent; therefore, the promotional figures should not be regarded as data on the current active users.

Price and version

As of August 22, 2026, the official website confirms that Compose AI offers a free version available on a long-term basis, as well as a paid version with advanced features. The pricing information is displayed dynamically; however, the current page does not provide any fixed amounts that can be verified, so prices from third parties in the past are not cited.

The specific prices, trial offers, taxes, and currency options are subject to the settlement page on the account. Paid services may be automatically renewed; once cancellation is requested, they can generally still be used until the end of the currently paid period.

Rules for refunds and cancellations

The help center offers a 7-day refund policy; users must contact support within 7 days of starting their subscription. Cancellation of the subscription does not result in an automatic refund. Requests made after the deadline, beyond the standard usage limits, or for extensive use of the service may not be eligible for a refund.

Refunds are usually applied only to the most recent bill and do not cover earlier charges. Users can select “Update Plan” at the bottom of the Chrome extension interface to manage their bills, upgrade, downgrade, or cancel their subscription.

Version and platform support

Current expansion information

The Chrome Web Store shows version 2.1.1 for this extension; the most recent public update was on January 2, 2025. Its size is approximately 24.73 MiB, and the interface language is listed as English. The store indicates that there are around 300,000 users of this extension, with a rating of 4.1 points, though these figures can change over time.

Privacy, permissions, and data processing

Browser extensions must be able to access the text and webpage context that the user is working on in order to provide suggestions and responses. The Chrome Store states that such extensions can process personal identification information, private communications, location data, webpage history, user activities, and website content.

The authorities state that user data will not be sold, and the expanded store also claims that such data will not be used for purposes unrelated to its core functions or for credit assessment. The privacy policy permits the use of aggregated, anonymized, or de-identified data analysis in order to improve services and promote the business.

The effective date of the currently published privacy policy remains May 5, 2021; therefore, it is not possible to determine all the details related to the current sub-processors and technologies. Enterprise users should request updated information regarding data processing, security measures, and data retention prior to deployment.

APIs, SDKs, and open-source status

• Public API: No official API documentation or key management interface was found.
• Official SDK: No JavaScript, Python, or SDKs in other languages were found.
• Official GitHub: No official organization or repository containing the source code for the product corresponding to the official website domain has been identified.
• Open source status of the product: The Compose AI extensions and backend services are not recognized as open source projects.
• Private deployment: No information available regarding local models, self-hosted solutions, or enterprise-level private deployments.

The search results include several unrelated repositories whose names contain “Compose AI”; these cannot be considered the official code for this product. The Chrome extension can be installed and used, but this does not mean that users obtain the source code or the rights to deploy it on servers.

Basic information

Recommendation score

The recommendation score is 3.8 out of 5. Compose AI integrates functions such as completion, generation, email replies, and rewriting into the web input field, making it suitable for users who need to write continuously in Gmail or Google Docs.

The main shortcomings are the lack of transparency in pricing, a wide range of permissions available, an interface primarily in English, as well as the absence of API options and self-hosting solutions. Business users must first clarify the boundaries of authorization outlined in the current terms.

Frequently Asked Questions

Is Compose AI free?

There is a free version available for a long period of time; the official website clearly states that the basic plugins can be used without cost. The premium version offers additional features such as personalization, and the actual subscription cost can be found on the account upgrade page.

How to use Compose AI?

After installing an extension in Chrome on the desktop and logging in, you can type in the compatible web page’s input field to get autocompletion, and use Tab to accept the suggestions. You can also enter text by using double slashes, or select content to rewrite it.

Can it write a complete email?

Yes, Compose Email allows for the creation of email drafts from brief prompts, and quick replies can take into account the context of the original email. Users still need to check the recipient, the details, the date, any attachments, and the contents of any commitments.

Is Chinese supported?

The Chrome Store currently lists the language of the extension interface as English only; the official website does not provide a complete description in Chinese. It is possible to test Chinese input by oneself, but Chinese output, as well as the tone and technical terms used, may not be consistent.

Which websites are supported?

The official site shows Gmail, Google Docs, and the web version of WhatsApp, emphasizing that they can be used across different websites. Actual compatibility depends on the website editor; internal corporate systems and complex rich-text pages require separate testing.

Does Compose AI provide an API?

No official public API, API Key console, or developer documentation was found. It is currently designed primarily for interactive writing in Chrome extensions, and it is not suitable for batch calls on the server side.

Is Compose AI open source?

It is not an open-source product that has been verified, nor is there any official source code repository or open-source license available. There is no confirmed official connection between the Compose project, which has a similar name on the internet, and this extension.

Is a refund issued automatically when canceling the subscription?

No. The help center requires users to contact support within 7 days of the subscription start date to request a refund; whether a refund will be granted depends on the amount of usage and specific eligibility criteria.

What data will be read during expansion?

The categories of data disclosed by the Chrome Store include personal identification information, private communications, location data, web browsing history, user activities, and website content. It is necessary to read the permission details before installation, and work accounts must also comply with the organization’s policies regarding extension management.

Can it be used in commercial copy?

The official website lists content creation, recruitment, and marketing as use cases, but the published terms of service still include restrictions on personal, internal, and non-commercial use. Before publishing content on behalf of a company or client, it is necessary to verify the current commercial licensing from the official sources, and one must also handle matters related to third-party copyrights and fact-checking.

Is there a mobile app?

No official iOS or Android native applications have been identified. The product is primarily a Chrome extension for desktop use; mobile browsers generally do not allow the installation of desktop extensions directly.

Summary

Compose AI is suitable for users who wish to get AI-powered completion, email drafting, and text rewriting features within their existing web workflows. Its advantages include a simple interface, clear shortcut keys, and a free version available for testing.

Before making a choice, it is essential to verify the actual subscription cost, compatibility with the target website, additional permissions, and any commercial licenses. When dealing with sensitive information or commitments to third parties, it is necessary to limit the amount of data entered and to always retain manual review.