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Launched 2021 · Verified Oct 16, 2026

Compose AI

Verified Oct 16, 2026 Active
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Free Chrome extension that autocompletes sentences and email replies as you type across the web

autocompleteemail writingbrowser extensionsentence completionwriting speedFreemium · from $9.99/mo

Listed on EffectHub ·

Screenshot of the Compose AI website
#1331
compose.ai as we captured it — our own screenshot, not the vendor’s press image.

Pricing

Pricing model
Freemium
Paid options from
$9.99/mo
Billing
Monthly

Free plan: 1,500 AI-written words, 10 email replies and 50 advanced autocompletes a month. Premium is $9.99/month billed annually ($119.88/year) or $14.99 month-to-month for 25,000 words; Ultimate is $29.99/month billed annually ($359.88) or $44.99 monthly with no caps. Plan cards render in the browser, so figures were read from the pricing page's own code.

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Overview

About Compose AI

Compose AI is a Chrome extension that autocompletes sentences as you type and drafts text on request in Gmail, Google Docs and most text fields on the web. Typing two slashes asks the AI to write something from a short instruction, and separate commands rephrase, shorten or expand a passage or draft a full email reply in one click. It learns a user's phrasing over time to personalise suggestions. The basic extension is free with monthly caps, and Premium and Ultimate subscriptions raise or remove those caps; the Chrome Web Store listing shows about 300,000 users and an update in October 2026.

API
Not confirmed
Last verified
Oct 16, 2026

Verified sources

  • Pricing page code: Basic free with 1,500 words a month; Premium $9.99/month billed $119.88/year or $14.99 billed monthly with 25,000 words; Ultimate $29.99/month billed $359.88/year or $44.99 monthly, unlimited; annual billing saves 33% (15 October 2026)compose.ai ↗
  • Home page FAQ: free Chrome plugin, free to use forever, with a premium version adding personalization; footer copyright 2024 Compose AI, Inc. (15 October 2026)compose.ai ↗
  • Chrome Web Store listing: about 300,000 users, rating 3.8, version 2.2.2 updated 9 October 2026 (15 October 2026)chromewebstore.google.com ↗
Fact check

Is Compose AI legit?

We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.

Domain registered
Sep 21, 2018 (8 years ago)Registry record (RDAP), registrar NameCheap, Inc., looked up Sep 6, 2026
TLS certificate
Issued by Let's Encrypt, valid until Dec 27, 2026Seen in our own connection to the site on Oct 16, 2026
Last checked
Oct 16, 2026The site answered
On the market since
2021The vendor's own material, read by us
Operated by
Compose AI, Inc., United StatesOur research, card verified Oct 15, 2026

How we collect these records

Editorial verdict

Pros & cons of Compose AI

medium confidence

A low-friction way to speed up routine email and doc writing: the free tier installs in a minute and completes sentences anywhere in Chrome. The extension is still being updated, but its free caps are small and browser-native AI features now cover much of the same ground at no cost, so the paid tiers have to earn their place.

Pros

  • Basic extension is free with no time limit
  • Autocomplete works across most web text fields, not one app
  • Learns personal writing style for suggestions
  • Annual billing cuts the Premium price by a third

Cons

  • Chrome-only, with no public API or desktop apps found
  • Free plan caps AI writing at 1,500 words a month
  • Marketing site copy and copyright are still dated 2024, which makes the product look less maintained than its store listing suggests

Best for

  • Heavy email writers who churn out routine replies in Gmail
  • Non-native English speakers who want inline phrasing help
  • Anyone testing writing autocomplete without paying

Not for

  • Long-form or brand-voice content work
  • Firefox, Safari or non-browser workflows

Watch out: The headline $9.99 is the annual rate; paying month to month costs $14.99, and Gmail, Docs and ChatGPT now bundle similar completion for free, so try the free tier before committing a year.

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