Cypher — AI Prompt Optimizer

Instantly optimize your AI prompts for better results on ChatGPT, Claude, and Gemini.

Cypher is a simple Chrome extension that helps you turn rough ideas into clearer, more effective prompts for AI tools — so you can get better responses without the usual frustration. We have all been there: you type something quick, and the AI gives you an okay but not an optimal answer. Cypher makes it easier. It looks at your prompt and offers a few improved versions using solid prompt techniques that actually work. How it works: 1. Type your prompt the way you normally would on ChatGPT, Claude, or Gemini. 2. Click the Optimize button that Cypher adds on the bottom right of the page. 3. Look over the suggestions and apply the one you like best with one click on the "Use this" button. No extra tabs or copying and pasting. Free plan includes: -Three optimized suggestions for each prompt -Works directly inside ChatGPT, Claude, and Gemini -Uses different helpful approaches such as role framing, structured output, and constrained prompting -Five daily optimizations Cypher Pro Upgrade For $5 per month you can upgrade and get: -Unlimited daily optimizations -Five suggestions per prompt, including more advanced options (Expert Reframe + Power Prompt) -Platform-specific optimization for prompt suggestions on every AI service we are compatible with -New features added over time at no extra cost Supported platforms: ChatGPT Claude Gemini We are actively working on adding support for other popular AI services such as Grok and Perplexity in the coming weeks. Privacy Your prompts are sent securely to our servers on Railway where we use the Groq API to generate suggestions. They are deleted immediately after processing. We do not store your prompts, use them to train any models, or sell any personal data. No account is required for the free plan. For full details please see our Privacy Policy. Cypher helps you spend less time struggling with wording and more time getting real value from the AI tools you already use.