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GPT-Prompter

GPT-Prompter is a Chrome extension for custom prompts and webpage-based AI requests. It uses your own OpenAI API key, with API usage billed separately.

Updated October 26, 2026.

Name	GPT-Prompter
Overview	GPT-Prompter is a Google Chrome extension for sending custom prompts directly to OpenAI APIs from the browser. It requires your own OpenAI API key rather than relying on a separate chat website. Featuring customizable prompts and a playground-like interface, it allows users to interact with the chat models directly on the web pages they are browsing, with outputs to review for the intended task.
Key features & benefits	Customizable prompt conversations tailored to user needs. Interactive playground-like interface for intuitive usage. Direct integration with OpenAI APIs; available models depend on account access and extension support. Use on supported web pages; some browser pages restrict extension scripts. Set up with a personal API key and review API usage and billing.
Use cases and applications	Drafting content for social media platforms. Creation of personalized responses for emails. Drafting chatbot conversations for customer-service workflows.
Who uses?	Developers Writers Content creators Researchers Students
Pricing	The Chrome extension is free, but OpenAI API usage is billed separately. A personal OpenAI API key with the required API access is needed; installing the free extension does not include free API usage. Check the API provider’s current billing terms before sending requests.
Tags	AI, Chatbot, Automation, Content Creation, Productivity
App available?	Available as a Chrome browser extension.

Image note: The retained GPT-Prompter screenshot includes a cookie notice covering part of the page. Its original capture date is unverified; it does not demonstrate current homepage availability or included API usage.

Sources: developer FAQ on extension access and API billing; personal API key setup and prompt workflows; GPT-Prompter Chrome Web Store listing. Sources checked October 26, 2026.

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