According to AlphaMoat, as of 2026-09, the Chrome extension Proxima has 25 users (-13.8% MoM) — ranked #6,909 of 9,324 AI browser extensions, and #1,748 of 2,418 in General AI.
Adds an Optimize button on chatgpt.com that opens OpenAI’s GPT-5 Prompt Optimizer with your current prompt. ### Proxima ChatGPT Optimizer You can write a detailed prompt to get better results. But every AI model is trained differently and often responds best to specific phrasing. OpenAI provides a **GPT-5 Prompting Guide** and an **Optimizer** that rewrites your prompt into the style that works best with GPT-5.
**Optimizer link:** [https://platform.openai.com/chat/edit?models=gpt-5\&optimize=true](https://platform.openai.com/chat/edit?models=gpt-5&optimize=true)
**Proxima ChatGPT Optimizer** is a simple shortcut to that Optimizer. It adds a small **Optimize** button inside ChatGPT so you can send your current prompt to the Optimizer in one click—no copy-paste, no juggling tabs.
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### How It Works (Quick Steps)
1. **Sign in first:** Log in to your OpenAI account at [https://platform.openai.com/](https://platform.openai.com/) in the **same browser** where the extension is installed. 2. **Write your prompt:** Type as usual in ChatGPT. 3. **Click “Optimize”:** The extension redirects you to the official **ChatGPT Optimizer** page, **auto-attaches your prompt**, and starts optimizing. 4. **Use the result:** Copy the optimized prompt and run it in ChatGPT (or anywhere you like).
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### Why It Helps
* **Model-aware phrasing:** Uses OpenAI’s GPT-5-tuned guidance to reword prompts for clearer, more reliable outcomes. * **One-click workflow:** No copy-paste. No manual setup. * **Stays out of your way:** Only appears when you’re writing in ChatGPT.
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### Requirements
* Be signed in at **platform.openai.com** in the same browser. * Internet access to open the Optimizer page.
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### Privacy & Permissions
* Runs entirely in your browser. * Redirects your current prompt to OpenAI’s official Optimizer page when you click **Optimize**. * No extra setup, servers, or accounts beyond your OpenAI login.
> Not affiliated with or endorsed by OpenAI. “OpenAI,” “ChatGPT,” and “GPT-5” are trademarks of their respective owners.
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+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.