PenPerfect

Elevate Your <Writing>, One Edit at a Time

Instructions:

  1. Enter or paste your text in the input box above (maximum 5000 words).
  2. Provide a prompt or instruction in the input field below the text box.
  3. Enter your Anthropic API key in the input field below the instructions.
  4. Click the submit button to generate the AI-powered response.
  5. The AI-generated response will appear in the text box on the right.
  6. The differences between your original text and the AI response will be highlighted in the boxes below.

Note: We prioritize your security. Your API key is securely stored in your browser and is not accessible to or saved by our application.

The differences between your original text and the AI-generated response will be displayed here. Removed sentences will be highlighted in red, while added sentences will be highlighted in green.
The word-level differences between your original text and the AI-generated response will be displayed here. Added words will be highlighted in green, while removed words will be highlighted in red.