Jetwriter AI

Multi-model AI writing assistant that lives inside Gmail, LinkedIn, WhatsApp Web, and any other tab.

Freemium· Free to try; paid plans on pricing pageWritingMulti-model (GPT-5, Claude Opus/Sonnet, Gemini Pro)

Best for

Pick Jetwriter AI if you live in Gmail or LinkedIn and want one overlay that can draft, translate, and chat-with-page using whichever frontier model fits the task.

Skip if

Skip it if you need an API, programmatic automation, or a standalone long-form writing studio rather than an inline browser overlay.

Jetwriter AI (formerly ChatGPT Writer, now redirected to jetwriter.ai) is a browser-resident writing assistant delivered as a sub-1MB Chrome extension with a companion web app for mobile and unsupported browsers. It drafts emails, replies, and messages in-context across Gmail, Outlook, WhatsApp Web, LinkedIn, Slack, Zendesk, and effectively any text field, and it can also chat with the current page or attached documents, fix grammar, translate, summarize, and rewrite via a popup overlay.

The pitch differentiating it from generic ChatGPT tabs is tighter inbox integration: it learns from your past Gmail threads, supports personalized writing profiles, retains a memory of prior chats, and lets you switch between GPT-5, Claude Opus/Sonnet, and Gemini Pro mid-session. It is aimed at knowledge workers, sales/support staff, and anyone who lives in their inbox and would rather not context-switch into a separate chatbot. Pricing is freemium with a free tier to try and paid plans on the pricing page.

Privacy claims include TLS 1.2+ in transit, no data sharing with third parties, and no use of customer text for model training. There is no public API; this is strictly a productivity overlay, not an automation backend, and the value largely lives or dies on how well its Gmail and chat-with-page surfaces fit your workflow.

Editor's take

A pragmatic descendant of the original ChatGPT Writer extension, now multi-model and squarely aimed at inbox-bound workers. The Gmail learning and per-task model switching are genuinely useful, but the lack of an API and the opaque pricing keep it firmly in the consumer productivity lane rather than the serious tooling tier.

— The AI Tool Bible editorial team

Pros

✅ Works inline across Gmail, Outlook, LinkedIn, WhatsApp Web, Slack, and Zendesk without switching tabs
✅ Lets you swap between GPT-5, Claude Opus/Sonnet, and Gemini Pro per task
✅ Learns from past Gmail threads and supports personalized writing profiles
✅ Tiny extension footprint (under 1MB) with chat-with-page and document analysis