AI Writing Assistant

The AI assistant is built directly into the editor — no switching tabs or copying text. You can use it to improve selected content, change its tone, translate it, or generate titles and subtitles for your post.

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Improving selected text

Select any text in the editor and a formatting toolbar will appear. Click the ✦ Improve button to open the AI actions menu. The AI menu offers the following actions:

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Improve

Refines the selected text — better word choice, clearer phrasing, smoother flow — without changing the meaning.

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Simplify

Reduces complexity. Good for making technical or dense writing easier to read.

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Extend

Expands the selected text with additional detail and supporting content. Useful when a section feels thin.

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Shorten

Condenses the text while keeping the key information. Use this when something is too wordy.

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Fix Grammar

Corrects grammar, spelling, and sentence structure without changing the voice or content.

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Change Tone

Rewrites the selected text in a different tone. Available tones:

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Translate

Translates the selected text into one of 15 languages: Arabic, Bengali, Chinese, English, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Turkish, Vietnamese.

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Custom prompt

Opens a text input where you can type any instruction — for example: “Rewrite this as a bullet list” or “Make this sound more urgent.” Press Enter or click the send button to apply.

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How the AI applies changes

After you trigger an action, the editor enters a read-only mode while the AI processes your request. The result streams in and replaces your selected text character by character. Once complete, you can keep the result or press Ctrl + Z (Undo) to go back to the original.

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Generating a title and subtitle

The AI can also suggest a title and subtitle for your post based on the content you’ve written. Next to the Title field at the top of the editor, click the ⚙ (settings) icon. In the dropdown, click Suggest under the Enhance title section. The AI will generate a title and stream it into the field. You’ll then see three options:

• Yes — accept the suggestion and keep it.
• No — reject it and go back to what you had before.
• ↻ (regenerate) — discard this suggestion and generate a new one.

The same flow applies to the Subtitle field.

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Using your own AI provider

By default, the AI assistant uses LetterBucket’s built-in AI (included in the Growth plan). If you’d prefer to use your own API key, you can connect OpenAI, DeepSeek, or OpenRouter under Settings → Profile → API Keys.