Helper

Helper is a desktop client that brings ChatGPT and other large language models to any application on macOS, Windows and Linux. A user selects text in any program, presses the Alt and X shortcut, and a small window opens where a prompt is applied to that text. Typing a slash in the input box opens more than 50 built in prompts. The app connects to OpenAI, Gemini, Azure and OpenRouter engines and supports more than 30 models, including GPT 4 and Gemini Pro. Results can be sent as a continuous chat, typed out character by character for plain text, or pasted in with formatting for code editors. The vendor lists use cases in drafting and rewriting text, replying to email, writing and fixing code, answering questions about websites, PDFs and videos, and replying on social media platforms. It is intended for entrepreneurs, developers, marketers and general knowledge workers who want a quick AI assistant that works across whichever software they already have open. The vendor also documents an API proxy service, and its changelog records regular releases adding models and Markdown rendering. The download is described as free. The site has no pricing page, but a comparison table on the home page lists Helper at 9.90 dollars against 20 dollars for ChatGPT Plus, 30 for Office Copilot, 10 for Notion AI and 12 for Grammarly. The home page also shows a promotion offering 50 percent off for buyers that day, which is not a regular price.