How much does Jetwriter AI cost?

Jetwriter offers a freemium model. Paid plans include Elite at $18 per month and Ultra at $39 per month. The free tier allows you to try the tool, while paid tiers unlock heavier models and Gmail learning features.

Which AI models does Jetwriter use?

It routes between GPT-5, Claude (Opus and Sonnet), and Gemini Pro. This multi-model approach lets you pick a specific model per task rather than being locked into a single AI provider.

Does Jetwriter work outside of Gmail?

Yes, it operates inside WhatsApp Web, LinkedIn, Outlook, Slack, and Zendesk. However, the deepest integration is in Gmail, where it ingests past threads to mimic your tone. It is designed for the Chrome/Chromium ecosystem.

Is there an API for developers?

No, there is no public API or open-source component. Jetwriter is an end-user productivity layer, not a platform for building applications. It is best for individuals and small teams using it directly in their browser.

What features are included in the free tier?

The free tier allows you to try the tool. Paid tiers specifically unlock the heavier models and the Gmail learning features that mimic your tone. The extension itself is small, under 1MB, and includes voice input and custom writing styles.

Jetwriter AI

Browser-based AI writing assistant that lives in Gmail, WhatsApp, LinkedIn, and Outlook and learns your past replies.

Freemium· Elite: $18 /month · Ultra: $39 /monthWritingMulti-model (GPT-5, Claude Opus/Sonnet, Gemini Pro)7.0 / 10

Visit website →

In short

Jetwriter is a Chrome extension that adds multi-model AI writing to Gmail, WhatsApp, and LinkedIn. It learns your tone and switches between GPT-5, Claude, and Gemini without leaving your browser.

Best for

Pick Jetwriter if you live in Gmail and want a single in-page assistant that can switch between Claude, GPT-5, and Gemini without leaving the tab.

Skip if

Skip it if you need an API, on-prem deployment, or a writing tool that works equally well outside the Chrome/Chromium ecosystem.

Jetwriter is a Chrome extension and companion web app that drops a multi-model writing assistant on top of whatever site you're on. It will draft emails, rewrite messages, fix grammar, summarize pages, translate text, and let you chat with the document or webpage in front of you. The deepest hooks are in Gmail, where it ingests your past threads to mimic your tone, but it also operates inside WhatsApp Web, LinkedIn, Outlook, Slack, and Zendesk.

Under the hood it routes between GPT-5, Claude (Opus and Sonnet), and Gemini Pro, so you're picking a model per task rather than being locked into one lab. It's pitched at individual professionals and small teams who spend a meaningful chunk of their day in an inbox or a CRM and want a single shortcut instead of bouncing into ChatGPT. The extension itself is small (<1MB), there is a free tier to try it, and paid tiers unlock the heavier models and the Gmail learning features.

There's no public API and no open-source component, so this is firmly an end-user productivity layer rather than something you'd build on. Voice input, custom writing styles, and live web search round it out into a fairly complete "AI everywhere I type" tool.

Editor's take

A solid, unflashy entry in the in-browser AI writing tier. The multi-model routing and Gmail tone-learning are the real selling points over Grammarly-style fixers. It won't replace a dedicated long-form writing tool, but for inbox triage and quick rewrites it earns its keyboard shortcut.

— The AI Tool Bible editorial team

Pros

✅ Multi-model routing across GPT-5, Claude, and Gemini
✅ Deep Gmail integration that learns your past writing style
✅ Works inside WhatsApp, LinkedIn, Outlook, Slack, Zendesk
✅ Tiny <1MB extension footprint
✅ Free tier to try before paying

Cons

⚠️ No public API for developers
⚠️ Closed source with limited transparency on data handling
⚠️ Chrome-extension-first, so non-Chromium browsers are second-class
⚠️ Crowded category competing with Grammarly and ChatGPT extensions

Use cases

email-draftinggrammar-fixingtranslationpage-chatsummarization

Frequently asked

How much does Jetwriter AI cost?: Jetwriter offers a freemium model. Paid plans include Elite at $18 per month and Ultra at $39 per month. The free tier allows you to try the tool, while paid tiers unlock heavier models and Gmail learning features.
Which AI models does Jetwriter use?: It routes between GPT-5, Claude (Opus and Sonnet), and Gemini Pro. This multi-model approach lets you pick a specific model per task rather than being locked into a single AI provider.
Does Jetwriter work outside of Gmail?: Yes, it operates inside WhatsApp Web, LinkedIn, Outlook, Slack, and Zendesk. However, the deepest integration is in Gmail, where it ingests past threads to mimic your tone. It is designed for the Chrome/Chromium ecosystem.
Is there an API for developers?: No, there is no public API or open-source component. Jetwriter is an end-user productivity layer, not a platform for building applications. It is best for individuals and small teams using it directly in their browser.
What features are included in the free tier?: The free tier allows you to try the tool. Paid tiers specifically unlock the heavier models and the Gmail learning features that mimic your tone. The extension itself is small, under 1MB, and includes voice input and custom writing styles.