Last updated: 2026-07-01
JetWriter AI is a browser extension trusted by 600,000+ users for emails, grammar fixes, summaries, and tone changes on Gmail, LinkedIn, and beyond. Free plan.
JetWriter AI is a browser extension used by 600,000+ writers to improve emails, rewrite text, fix grammar, and change tone across Gmail, LinkedIn, and any website without leaving the active tab. The free plan covers 15 AI responses per month; the Pro plan at $12/month unlocks unlimited rewrites, 10+ writing modes, and multilingual support across 30+ languages.
JetWriter AI, formerly known as ChatGPT Writer, is a browser-based AI writing assistant launched in December 2022. It rebranded to JetWriter AI in September 2025 to reflect its expansion beyond GPT-only integration to include Claude, Gemini, and other models. As of 2025, the tool is trusted by over 600,000 users across its Chrome extension, web app, and mobile app. The core product is a lightweight Chrome extension (under 1MB) that integrates AI writing assistance directly into Gmail, LinkedIn, Outlook, and virtually any text field on the web. When triggered in Gmail or another messaging platform, it reads the conversation context automatically and suggests replies without requiring copy-pasting. Users can also fix grammar, change tone, summarize text, translate content, and ask AI questions about the current webpage. JetWriter AI differentiates itself through personalization: users build custom writing style profiles that shape outputs to match their voice, making generated replies less generic than those from a standard ChatGPT session. The tool also supports voice-to-prompt input in any language and allows users to supply their own API key as an alternative to the built-in credit system. Pricing is three-tier: Free (15 responses/month), Pro at $12/month ($9 billed annually) for unlimited responses, and Elite at $18/month ($14 billed annually) for the best-quality models and advanced reasoning tasks. The free plan is sufficient for testing but not daily professional use. JetWriter AI explicitly states in its privacy policy that user data is not used to train AI models and is not sold to third parties, which addresses a common concern with browser extension AI tools. The tool is best for professionals who write frequently in email and messaging contexts rather than long-form content creators — it produces 200-500 word outputs well but struggles with 2,000+ word articles.
Free: 15 AI responses/month. Pro: $12/month ($9/month billed annually) — unlimited responses, priority support. Elite: $18/month ($14/month billed annually) — unlimited responses, best-quality models, advanced reasoning. Users can also supply their own OpenAI/Anthropic/Google API key instead of using a plan.
| Feature | Pro | Free | Elite |
|---|---|---|---|
| Monthly AI responses | ~500/mo (unlimited regular) | 15/mo (regular) | ~1,000/mo (unlimited regular) |
| Advanced AI models (Opus, GPT-5.5, Sonnet 4.6) | ✓ | — | ✓ |
| Advanced model responses/month | ~500/mo | — | ~1,000/mo |
| Browser extensions | Chrome, Edge, Brave, Opera, Vivaldi | Chrome only | Chrome, Edge, Brave, Opera, Vivaldi |
| Web app + mobile apps | ✓ | ✓ | ✓ |
| Live web search access | ✓ | ✓ | ✓ |
| Voice input + file attachments | ✓ | ✓ | ✓ |
JetWriter AI is a browser extension and companion web app that drafts emails, replies, and rewrites text directly inside Gmail, LinkedIn, and other websites. It launched in December 2022 as ChatGPT Writer, a Chrome extension that connected ChatGPT to Gmail for drafting email replies, and rebranded to JetWriter AI in September 2025 once it expanded beyond a single AI model. The extension is under 1MB, far smaller than competing extensions that run 5 to 20MB, and is used by over 600,000 people as of 2026. As of version 2026.5.21, JetWriter AI runs on multiple models including GPT-5.2 Thinking, Claude Sonnet 4.6, and Gemini 3.1 Pro, letting users pick which model handles a given task. The company states user data is not used for model training and is not sold to third parties.
JetWriter AI has three tiers. The Free plan costs $0 and includes 15 AI responses per month, enough to try the core email and rewrite features. The Pro plan costs $12/month and unlocks unlimited rewrites, more than 10 writing modes, grammar fixes, tone changes, and support for over 30 languages. The Elite plan costs $18/month (or $14/month billed annually, $168/year) and adds unlimited access to advanced reasoning models like GPT-5.1 Thinking and Gemini 3 Pro Thinking, voice input, file attachments, and priority support. Users can also bring their own API key for advanced model access. The jump from Free to Pro is the main upgrade most users need; Elite is aimed at people who specifically want the highest-reasoning models for complex writing tasks.
JetWriter AI's main differentiator is model flexibility: as of 2026 it is one of the only extensions offering GPT-5.1 Thinking, Claude Sonnet 4.5, Gemini 3 Pro, and DeepSeek in a single interface, so users can pick the model best suited to a task without switching tools. Its extension footprint is under 1MB, compared to 5 to 20MB for many competing AI writing extensions, which keeps the browser fast. Unlike Grammarly, which focuses on checking and refining text you have already written, JetWriter AI produces first drafts directly inside the platform you are using, whether that is Gmail, LinkedIn, or a support ticket in Freshdesk. It understands the full conversation thread before generating a reply, not just the most recent message, and supports over 30 languages, while Grammarly is built primarily for English.
Grammarly is built to check and improve text you have already written, focusing on grammar, spelling, and style across English-language content. JetWriter AI instead produces first drafts directly inside email and messaging platforms, reading the full conversation context before generating a reply, rewrite, or summary. JetWriter AI supports over 30 languages, while Grammarly's core checking is built around English. On price, JetWriter AI's Pro plan at $12/month sits below many Grammarly Business plans, and JetWriter's free tier (15 responses/month) lets users try AI-generated drafts before paying, whereas Grammarly's free tier focuses on basic grammar suggestions rather than draft generation. Choose Grammarly if your main need is polishing English writing you already produced; choose JetWriter AI if you want an AI to draft replies and rewrites for you across many languages and platforms.
Yes, JetWriter AI has a free plan that includes 15 AI responses per month across its supported features, such as email replies, grammar fixes, tone changes, and summaries. This is enough to test the extension on Gmail, LinkedIn, or any website before deciding whether to upgrade. The free tier does not require a credit card to install and start using. Once a user needs more than 15 responses per month, or wants unlimited rewrites and access to 10+ writing modes plus 30+ language support, the Pro plan at $12/month removes those caps. There is no separate time-limited trial of Pro or Elite; the free tier itself serves as the ongoing no-cost option, and users typically upgrade once they exceed the monthly response limit.
JetWriter AI is best for people who write a high volume of emails and messages across platforms like Gmail, LinkedIn, and support tools such as Freshdesk, and want AI-drafted replies that understand the full conversation context rather than just the last message. Its multilingual support (30+ languages) makes it useful for teams communicating across regions, and its lightweight extension (under 1MB) appeals to users who want minimal browser slowdown. JetWriter AI is a weaker fit for users who need a full marketing content suite with long-form blog generation, SEO tools, and campaign planning, since some 2026 reviews note its functionality is simpler than all-in-one platforms like Jasper. Users who only need grammar checking on text they already wrote, without draft generation, may find Grammarly's narrower focus sufficient and possibly cheaper.
JetWriter AI works as a browser extension that activates on Gmail, LinkedIn, and effectively any website where you can type text, including support platforms like Freshdesk. It also has a companion web app available on desktop and mobile, giving users a full AI chat experience outside the browser extension. The extension reads the surrounding context of the page, such as an email thread or a LinkedIn message, so its replies are relevant to the conversation rather than generic. Recent extension updates have specifically fixed compatibility issues on Notion and Google Docs, which previously had bugs affecting how the tool behaved on those sites. Because it works across any site rather than being locked to one inbox or platform, it is positioned as a general writing layer for the browser rather than a single-app plugin.
No, JetWriter AI states that user data is not used for model training and is not sold to third parties, which is part of its proprietary data licensing terms as listed in 2026. On the practical side, some users have reported the extension's popup being overly persistent when selecting text on a page. JetWriter AI addressed this by adding customization options: users can set a custom trigger key, such as holding ctrl or alt while selecting text, so the popup only appears when intentionally requested, and can disable the popup entirely on specific websites. An earlier bug where the extension confused the sender's name with the recipient's name in drafted replies has also been fixed in recent updates. For any remaining issues, JetWriter AI offers one-click human support directly through the extension and a knowledge base at help.jetwriter.ai.
AI writing assistant browser extension used by 600,000+ users for emails, grammar fixes, summarization, and tone changes across Gmail, LinkedIn, and any website. Free plan (15 responses/mo); Pro at $12/mo.
JetWriter AI (formerly ChatGPT Writer) · Free tier available