Most prompt tools assume your AI outputs work fine if they sound good. PromptFix doesn't make that assumption.
You get a 0-100 reliability scale for every prompt. PromptFix checks for hallucination risk and constraint coverage before you send anything to ChatGPT or Claude. That number tells you if your prompt will actually produce what you need.
Reliability scoring separates PromptFix from everything else. You're not just tweaking wording or padding length. You see exactly where your instructions might fail. PromptFix flags vague language—the kind that lets AI drift off-brand. It spots missing constraints. Then it generates optimized versions with higher scores.
Say you're a content manager running dozens of AI briefs every week. You can save preference profiles with brand rules and tone requirements. PromptFix applies those standards to every analysis automatically. Version history tracks which prompt variants scored highest over time. A/B testing lets you compare outputs side-by-side (automatic scoring across GPT and Claude models).
The Chrome extension works directly inside ChatGPT, Claude, Gemini, and Perplexity. No copy-pasting between tabs. Mobile apps bring the same reliability checks to iPhone and Android. There's also a REST API for programmatic access.
Free plan gives you 15 analyses monthly with one preference profile. Starter plan costs $9/mo—100 analyses and five profiles. Pro runs $29/mo with reverse prompt image analysis and seven-model comparison. The free tier won't last long if you're testing prompts daily.
