Using Publlish's AI Assistant

Learn how to use Publlish's built-in AI Assistant to write social media captions, repurpose content across platforms, generate hashtag suggestions, and speed up your content creation workflow.

Bhanu Prasad

— 4 min read
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Writing captions for six different platforms, multiple clients, and a consistent posting schedule is one of the most time-consuming parts of social media management. Publlish's AI Assistant is built into the composer and helps you write, rewrite, and repurpose content without leaving the dashboard.

This guide covers everything the AI Assistant can do and how to get the most out of it.

What the AI Assistant Can Do

  • Generate a caption from scratch based on a topic, product, or brief
  • Rewrite an existing caption to improve tone, clarity, or length
  • Repurpose a caption for a different platform (e.g. turn a LinkedIn post into a TikTok caption)
  • Suggest relevant hashtags for a post
  • Shorten or expand a caption to fit platform character limits
  • Adjust the tone — make it more professional, more casual, more urgent, or more conversational

How to Access the AI Assistant

The AI Assistant lives inside the Publlish composer. When you're creating or editing a post:

  1. Click New Post in your dashboard
  2. In the caption field, look for the AI Assistant button (usually a sparkle or magic wand icon)
  3. Click it to open the AI Assistant panel
  4. Type your prompt or choose from the suggested actions

The AI Assistant works within the context of whichever channel you've selected — so if you're composing for X, it knows to keep the output under 280 characters.

Generating a Caption from Scratch

The fastest way to use the AI Assistant is to give it a brief and let it write a first draft.

How to do it:

  1. Open the composer and select your channel(s)
  2. Click the AI Assistant
  3. Type a brief description of what the post is about — the more specific, the better
  4. Select the tone you want (casual, professional, witty, urgent)
  5. Click Generate

The AI Assistant will produce a draft caption. You can accept it, regenerate for a different version, or use it as a starting point and edit manually.

Example prompts that work well:

  • "Instagram caption for a behind-the-scenes video of our product packaging process. Conversational tone, end with a question."
  • "TikTok caption for a video about 3 LinkedIn mistakes most people make. Hook-first, under 150 characters."
  • "LinkedIn post announcing our new partnership with [Company]. Professional but warm, 300 words."
  • "Facebook post promoting a 20% off weekend sale for our skincare brand. Friendly, include a CTA to shop now."

The more context you give, the more on-brand the output will be.

Repurposing Content Across Platforms

One of the most useful AI Assistant features for agencies and marketing teams is platform repurposing. You write content once and the AI adapts it for each channel.

How to repurpose:

  1. Write or paste your original caption in the composer
  2. Click AI Assistant → Repurpose for [platform]
  3. The AI will rewrite the caption in the style and format appropriate for that platform

For example:

  • A 500-word LinkedIn thought leadership post → compressed into a punchy 280-character X post
  • A TikTok caption with trending hashtags → rewritten as a polished Instagram Reel caption
  • A Facebook promotional post → adapted for the professional context of LinkedIn

This is especially useful when cross-posting to TikTok and Instagram Reels, or LinkedIn and X at the same time. Cross-posting TikTok and Instagram Reels → | Cross-posting LinkedIn and X →

Improving an Existing Caption

If you've already written a draft but it's not quite right, use the AI Assistant to refine it:

  • Shorten — cuts the caption to fit within a platform's character limit or best-practice length
  • Expand — adds more context, detail, or storytelling to a short caption
  • Change tone — rewrite as more professional, more casual, more direct, or more enthusiastic
  • Improve hook — rewrites the first line to be more attention-grabbing
  • Fix grammar — cleans up spelling and grammar without changing the meaning

Select the text you want to improve, click AI Assistant, and choose the action.

Hashtag Suggestions

The AI Assistant can suggest relevant hashtags based on your caption content and the platform you're posting to.

To get hashtag suggestions:

  1. Write your caption
  2. Click AI Assistant → Suggest hashtags
  3. The AI will generate a list of relevant hashtags
  4. Select the ones you want to include and they'll be added to your caption

The suggestions are tailored per platform — it won't suggest 30 hashtags for a LinkedIn post or suggest LinkedIn industry hashtags for a TikTok caption.

How hashtags work in Publlish →

Tips for Getting Better AI Output

The AI Assistant produces better results when you give it more context. Here are the inputs that make the biggest difference:

Be specific about the topic — "skincare brand post" is less useful than "post about our new vitamin C serum that reduces dark spots, targeting women 25–40"

Specify the tone — "professional", "casual", "witty", "urgent", "empathetic" all produce very different outputs

Tell it the goal — "drive link clicks", "get comments", "announce a launch", "educate the audience" helps the AI write a caption with the right CTA

Mention the platform — even if you've selected the channel, explicitly mentioning "for TikTok" or "for LinkedIn" in your prompt improves results

Iterate — if the first output isn't right, don't just accept it. Hit regenerate or refine your prompt. The second or third version is often much stronger.

What the AI Assistant Doesn't Do

  • It doesn't access your brand guidelines automatically — you need to include brand voice cues in your prompt
  • It doesn't know your historical post performance — it can't tell you what worked before
  • It doesn't browse the internet or know about real-time trends — for trending sounds or topics, you'll still need to check the platforms themselves
  • It can't generate images or video — caption writing only

Frequently Asked Questions

Is the AI Assistant available on all Publlish plans? The AI Assistant is available on paid plans. Check your current plan to confirm access. Plans and pricing →

Will the AI Assistant write in my brand voice? It can approximate your brand voice if you include tone and style instructions in your prompt. For consistent brand voice, include specific guidance like "write in a friendly, direct tone — no corporate jargon, short sentences, always end with a question."

Can I use the AI Assistant for TikTok captions? Yes — the AI Assistant works for TikTok, Facebook, Instagram, YouTube, X, and LinkedIn captions. It adjusts output based on the platform selected in the composer.

Does the AI Assistant learn from my previous posts? Not automatically — it doesn't retain memory between sessions. Each prompt starts fresh. To maintain consistency, include brand voice instructions each time or build prompt templates your team uses.

Is AI-generated content detectable by social platforms? Social platforms do not currently penalise or flag AI-generated captions. The content is published the same way regardless of how it was written.

Can I edit AI-generated captions before scheduling? Yes — AI output is always editable. Treat it as a first draft, not a final copy.

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