Generic ChatGPT replies sound like every other bot. Your customers can tell. Here's how to make AI sound like YOU. MoltFlow's AI writing style training uses Learn Mode to analyze YOUR actual conversations and replicate your unique voice — vocabulary, tone, emoji usage, personality. The result: WhatsApp AI auto-reply messages that feel authentic and human, not robotic templates.

What You'll Need

Before starting, make sure you have:

A connected WhatsApp session — Your account must be connected and showing "WORKING" status. See our connection guide if needed.
Business plan — AI writing style profiles (Business plan feature) are only available on the Business tier. Upgrade here if needed.
At least 20 sent messages in your chat history — The AI needs examples of how you write. If you've been using WhatsApp for business, you likely have hundreds of suitable messages already.

Important: Style profiles learn from YOUR outgoing messages, not incoming ones. The AI analyzes how you respond to customers, what words you use, how you structure sentences, and how you close conversations.

How Style Profiles Work

Most AI chatbots sound the same — overly formal, robotic, generic. They use phrases like "I apologize for the inconvenience" and "Please don't hesitate to reach out" that no real person would say in a WhatsApp conversation.

Unlike generic ChatGPT wrappers, MoltFlow's Learn Mode analyzes YOUR actual conversations to replicate your unique voice. The AI writing style engine extracts patterns from your sent messages — not generic templates — so WhatsApp AI auto-reply sounds like you, not a robot.

Here's what the AI analyzes when training on your messages:

Vocabulary choices — Do you say "Hey" or "Hi" or "Hello"? "Thanks" or "Thank you" or "Thx"? "Yeah" or "Yes"?
Sentence structure — Do you write long, detailed explanations or short, punchy replies? Do you use questions to engage ("What do you think?") or statements ("Here's what I recommend")?
Emoji usage — How often do you use emojis? Which ones? Do you put them at the end of sentences or sprinkle them throughout?
Formality level — Are you casual and friendly ("No worries!") or professional and polished ("I understand your concern")?
Greeting and closing patterns — How do you start conversations? How do you sign off? Do you use your name, or just end with "Talk soon!" or nothing?
Response length — Are your replies typically 1 sentence, 1 paragraph, or multiple paragraphs?

Once trained, the AI generates replies that match YOUR patterns, not a generic template. Recipients feel like they're talking to you, not a bot. This is AI writing style training — the secret to authentic WhatsApp AI auto-reply that drives engagement.

Let's walk through the training process.

Step 1: Navigate to AI Style Profiles

You'll see the Style Profiles page, which shows all your existing profiles (if any). Each row displays:

Profile name — The label you gave this style
Status — Training (yellow), Active (green), or Inactive (gray)
Sample count — How many messages the AI has learned from
Last trained — When the profile was last retrained with new samples

If this is your first time here, the page will be empty. Let's create your first profile.

Step 2: Create a New Style Profile

Click "Create Profile" in the top-right corner.

A creation form appears. Fill in these fields:

Profile name (required) — Enter a descriptive name for this writing style. Good examples:

"My Business Tone" — Your default professional voice
"Casual Support" — Friendly, informal customer service
"Sales Outreach" — Persuasive, energetic prospecting style
"Technical Support" — Detailed, precise, jargon-appropriate

Why multiple profiles? You might write differently when selling vs. supporting customers vs. chatting with partners. Separate profiles let you apply the right tone to the right conversations.

Session to learn from (required) — Select the WhatsApp session you want the AI to analyze.

MoltFlow will scan all outgoing messages from this session to extract your writing patterns. Only YOUR sent messages are analyzed — incoming messages from others are ignored.

If you have multiple WhatsApp accounts connected, choose the one with the most representative conversations. For example, if you want a professional support tone, choose your customer service number, not your personal account.

Minimum sample count — MoltFlow requires at least 20 messages to train a profile. If your selected session has fewer than 20 sent messages, you'll see an error. Send more messages first, then return to create the profile.

Click Create.

MoltFlow immediately starts scanning your chat history. This takes 10-30 seconds depending on how many messages you've sent.

Once complete, the profile appears in the list with status "Training" and a sample count (e.g., "45 samples collected").

Using the API to create a profile:

bash

curl -X POST https://apiv2.waiflow.app/api/v2/ai/style-profiles \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "My Business Tone",
    "session_id": "YOUR_SESSION_ID"
  }'

Now you need to refine the training samples by enabling Learn Mode.

Step 3: Enable Learn Mode to Collect Samples

Learn Mode is MoltFlow's continuous learning feature. When enabled, every message you send manually through WhatsApp is automatically added to the profile's training samples. This is the core of AI writing style training.

This serves two purposes:

Initial sample collection — If you just created the profile, Learn Mode helps you quickly gather 20-50 representative messages by chatting naturally for a day or two.
Ongoing improvement — As your AI writing style evolves, Learn Mode keeps the AI up to date. New vocabulary, new emoji preferences, new closing phrases — all automatically incorporated.

On the Style Profiles page, click on your newly created profile to open the detail view.

You'll see a toggle switch labeled "Learn Mode". Click it to turn Learn Mode ON.

The toggle turns green, and you'll see a message: "Learn Mode active. All new outgoing messages will be added as training samples."

Now chat naturally on WhatsApp for the next day or two. Don't change how you write — the AI needs to learn YOUR authentic voice, not an artificial style you think sounds good.

How many samples do you need?

Minimum: 20 messages — Enough to train a basic profile, but results will be generic
Good: 50 messages — AI starts capturing your personality and tone
Ideal: 100+ messages — AI closely mimics your style with high accuracy

More samples = better results. But even 50 samples produce noticeably better replies than generic AI.

Pro tip: Have upcoming customer conversations? Perfect time to enable Learn Mode. Your natural support responses will train the AI to handle future inquiries automatically.

Step 4: Review and Curate Training Samples

After a day or two of Learn Mode, you'll have collected 50-100+ samples. Now it's time to review them and remove any that don't represent your desired style.

On the profile detail page, click the "Samples" tab.

You'll see a list of all messages the AI collected, with these columns:

Message text — The actual content you sent
Sent at — When you sent this message
Chat — Which conversation it came from (contact name or phone)
Actions — Remove from training set

Why Curate?

Not every message you send represents how you want the AI to reply. Examples of messages you should REMOVE:

Angry or frustrated messages — "This is ridiculous, I've told you three times already!" You don't want the AI learning to sound annoyed.
Copied templates — Generic copy-paste responses like "Thank you for your inquiry. We will respond within 24 hours." These aren't YOUR voice.
Personal/off-topic messages — "Can you pick up milk on the way home?" if this snuck in from a personal contact. Not relevant to business auto-replies.
Errors or typos you regret — "Thnak you" or messages that autocorrected wrong. Don't teach the AI bad spelling.
Highly context-specific messages — "The file you requested is attached" when there's no attachment. The AI can't attach files, so this sample isn't useful.

What to Keep

Keep messages that show:

Your natural greeting style
How you answer common questions
Your typical response length
Your emoji usage patterns
How you close conversations
Your vocabulary choices
Your tone (friendly, professional, casual, etc.)

The more consistent your kept samples are with your desired auto-reply voice, the better the AI will perform.

Removing Samples

Click the "Remove" button next to any message you want to exclude.

The message is removed from the training set immediately. It won't affect future AI generations, but you'll need to retrain the profile (next step) for the removal to take effect.

You can remove as many or as few as you want. Some users remove 20-30% of samples to polish the training set. Others keep 100% if their messaging is already consistent.

Step 5: Activate the Style Profile for Auto-Replies

Once you've curated your samples and have at least 20 high-quality messages, it's time to activate the profile.

On the profile detail page, click "Activate".

MoltFlow starts training the AI model. This process takes 1-2 minutes. You'll see a progress spinner and a message: "Training model... This may take a moment."

What happens during training:

MoltFlow sends all your curated samples to the AI engine
The AI identifies patterns in vocabulary, structure, tone, and style
A custom language model is created specifically for your writing style
The model is saved and linked to your profile

Once training completes, the profile status changes from "Training" to "Active" (green).

Now, when you enable WhatsApp AI auto-reply on a chat, MoltFlow uses this profile to generate responses.

How to Use the Activated Profile

Navigate to Dashboard > AI > Auto-Reply (or the Messages page if you're setting per-chat auto-reply).

When configuring auto-reply for a chat or session, you'll see a "Style Profile" dropdown. Select your newly activated profile.

Now, when a message arrives in that chat and WhatsApp AI auto-reply is enabled, MoltFlow:

Reads the incoming message
Checks your knowledge base (if configured) for factual information
Generates a reply using your AI writing style profile's patterns
Sends the reply automatically

The recipient sees a response that sounds like YOU, not a generic bot. This is the difference between MoltFlow's AI writing style training and generic ChatGPT wrappers.

Using the API to activate a profile:

bash

curl -X POST https://apiv2.waiflow.app/api/v2/ai/style-profiles/{profile_id}/activate \
  -H "Authorization: Bearer YOUR_API_TOKEN"

Retraining a Profile

As you collect more samples or remove outdated ones, you'll want to retrain the profile to incorporate changes.

Click "Retrain" on the profile detail page.

MoltFlow rebuilds the AI model with the current sample set. This takes 1-2 minutes. The profile stays active during retraining — auto-replies continue using the old model until the new one is ready.

It's a good idea to retrain:

Every 2-4 weeks if Learn Mode is on (to incorporate new samples)
After removing many samples during curation
When your writing style changes (e.g., you rebrand, change tone, target a new audience)

Tips for Better Style Training

Follow these five tips to maximize the quality of your AI-generated replies:

1. Include Different Message Types

Don't just train on questions and answers. Include:

Greetings — How you start conversations
Closings — How you sign off
Short replies — "Thanks!", "Got it.", "Perfect."
Long explanations — Multi-paragraph answers to complex questions
Follow-ups — "Hey, just checking in on this..."

Variety helps the AI handle diverse conversation contexts.

2. Be Consistent in Tone

If your training samples mix casual and formal tones, the AI won't know which to use. Pick one tone and stick to it across all samples.

Example of inconsistent tone (bad):

Sample 1: "Hey! Yeah, that works for me 😊"
Sample 2: "Good afternoon. I confirm that the proposed time is acceptable."

These samples teach conflicting styles. The AI might blend them awkwardly.

Example of consistent tone (good):

Sample 1: "Hey! Yeah, that works for me 😊"
Sample 2: "Perfect! Let's do 2 PM then. See you there 👍"

Both samples are casual, friendly, emoji-positive. The AI learns a clear style.

3. Include at Least 5 Different Conversations

Don't train solely on messages from a single chat. Include samples from 5-10 different contacts so the AI sees how you adapt to different people while maintaining your core voice.

This prevents overfitting to one conversation's specific context.

4. Remove Outlier Messages

If 90% of your messages are friendly and casual, but you have 3 angry rants, remove the rants. Outliers skew the AI's understanding of your "normal" voice.

Aim for a training set where every message is a good example of how you want the AI to sound.

5. Retrain Periodically as Your Style Evolves

Your writing style isn't static. Maybe you:

Start using a new emoji (💪 instead of 👍)
Adopt new vocabulary ("No worries" becomes "All good")
Shift from formal to casual (or vice versa)
Change how you close messages

Keep Learn Mode on and retrain every few weeks to keep the AI aligned with your current voice.

Testing Your Style Profile

Before deploying auto-reply to all your chats, test the profile on a low-stakes conversation.

Option 1: Test Chat with Yourself

Send a message to your WhatsApp account from another phone (or ask a friend to text you).

Enable AI auto-reply on that chat with your new style profile.

The AI will generate a response. Compare it to how you'd actually reply. Does it sound like you? Is the tone right? Are the word choices natural?

If the response feels off, go back to your samples, remove problematic messages, and retrain.

Option 2: Manual Review Before Enabling Auto-Send

Some users prefer to have the AI suggest replies without auto-sending them. This way, you can review, edit, and manually send.

To enable this:

Configure auto-reply with "Review before sending" enabled (if your plan supports this feature)
When a message arrives, MoltFlow generates a suggested reply using your style profile
You see the suggestion in the dashboard, edit if needed, then click Send

This is a great middle ground while you're still fine-tuning the style profile.

Troubleshooting

AI Replies Don't Sound Like Me

Problem: The activated profile generates responses that feel generic or don't match your voice.

Solution: You likely don't have enough samples, or the samples aren't representative. Go back to the Samples tab. Make sure you have 50+ messages. Remove any that are outliers. Retrain the profile. Test again.

Profile Stuck in "Training" Status

Problem: You clicked Activate, but the status never changed to "Active". Still shows "Training" after 5+ minutes.

Solution: The training job failed. Refresh the page. If status is still "Training", click "Cancel Training" then "Activate" again. If it fails again, check your sample count — you need at least 20 samples. Contact support if the issue persists.

Can't Enable Learn Mode

Problem: Learn Mode toggle is grayed out or doesn't save when clicked.

Solution: Verify your session is connected (status = "WORKING"). Learn Mode requires an active session to watch for new outgoing messages. If your session is STOPPED or FAILED, restart it by scanning the QR code, then enable Learn Mode.

Not Enough Samples to Train

Problem: You created a profile, but it shows "Only 8 samples collected. Minimum 20 required."

Solution: Your selected WhatsApp session doesn't have enough sent messages yet. Either:

Send 12+ more messages manually through WhatsApp, then refresh the profile page
Enable Learn Mode, chat naturally for a day, then come back and activate once you hit 20+ samples

Samples Include Messages I Didn't Send

Problem: The Samples tab shows messages you don't recognize or didn't send.

Solution: If multiple people use the same WhatsApp number (e.g., a shared customer service account), all outgoing messages are collected. Review the Samples tab and remove any messages sent by others. Only keep YOUR messages to train YOUR style.

What's Next?

Now that you've trained an AI writing style profile, explore these related AI features:

Build a Knowledge Base for AI — Upload documents so the AI has factual information to include in replies
Build a Support Bot with OpenClaw — Combine your AI writing style with n8n workflows for advanced automation
REST API Quick Start — Programmatically manage style profiles and trigger auto-replies from your apps

All of these features work together to create fully automated, human-sounding WhatsApp AI auto-reply systems.

Ready to stop sounding like every other generic ChatGPT bot? Start your Business trial and see how MoltFlow's AI writing style training makes automation feel personal, not robotic.

Need help? Contact support via the dashboard chat or email us at [email protected]. We typically respond within 2-4 hours.

Train AI Writing Style (Stop Sounding Like a Bot)