According to AlphaMoat, as of 2026-09, the Chrome extension GPT-Prompter has 8,000 users (+0% MoM), rated 4.3 (23 reviews) — ranked #612 of 9,324 AI browser extensions, and #144 of 2,418 in General AI.
What is GPT-Prompter
Fast custom prompts to GPT-3.5, GPT-4 and ChatGPT API An extension to have fast and custom prompts sent to OpenAI's GPT-4 and ChatGPT from every webpage.
Ensure the lowest cost for using GPT querying directly OpenAI`s API.
The extension works using your API Key from OpenAI. Get one at: https://openai.com/ (we never have access to it).
This is an open source project available at GitHub: https://github.com/giosilvi/GPT-Prompter
***How to use it*** (On first install you need to reload the open webpages to have it working) 1. Click on the extension icon and insert your API KEY. 2. (optional) Select text on a web page. 3. Right-click, from the context menu select GPT-Prompter and choose a prompt!
Complete Guide: https://www.gptprompter.com/how-to-use-it
Show the rest of the store description▾
***Custom prompt*** You can customize the prompt as you like,with a placeholder #TEXT# that gets replaced with the text you select from the webpage.
***Models***
- gpt-4/gpt-4-turbo/gpt-4o/ gpt-4o-mini
- gpt-3.5-turbo
***History and costs*** You can access and search through the history of your prompts and save them as JSON file.
***Latest*** v4.6: Added gpt-4o-mini v4.5: Added gpt-4-turbo and gpt-4o, and images/screenshot support!
Extension profile
User Growth Trend
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+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.