Copalat (Upwork GPT)

Copalat, previously published under the name Upwork GPT, is a Chrome extension aimed at freelancers who send a high volume of Upwork proposals. The premise is simple: clients only see the first couple of lines of each bid, so spending those lines on the client's own problem matters more than any template. Copalat scrapes the job title, description, skills and screening questions from the page you are viewing and uses that context to draft a cover letter written for that specific client.

The workflow stays inside Upwork. You open a job, click Apply, and a panel appears in the corner of the proposal form. You choose a saved profile, a tone (professional, friendly, confident or concise) and a length (short, medium or detailed), then generate. Each draft draws only on the experience you stored in your profile, so it does not invent clients, numbers or links, and it follows any hidden instruction in the post such as starting with a particular word. You press Insert to place the cover letter and each screening answer into the form, edit if needed, and submit yourself.

The extension is deliberately non-autonomous: it drafts and fills fields only when you click Insert, never spends Connects and never acts on your account. It runs only on Upwork proposal pages, saves several profiles (one per kind of work, with a default), and keeps recent proposals for reuse. Paid plans are metered by proposal count and billed monthly through Stripe.