Chatty AI conversation caps explained: what the limits really cost

Why conversation limits matter on AI chatbot plans

If you run a growing Shopify store, you've probably looked at Chatty or another AI chatbot and noticed the plan includes "X conversations per month." What happens when you go over that number depends entirely on the billing model, and that difference can cost you hundreds of dollars in a single busy week.

Chatty uses a soft-cap model: when you exceed your plan's included conversations, the platform automatically charges overage fees at rates tied to your plan tier. Other tools (including kolton.ai) use a hard-cap or flat-rate model where the monthly bill never changes, no matter how many conversations the AI handles. This post walks through what Chatty's conversation caps really mean, what overages cost in practice, and how to compare that model against flat-rate alternatives.

Key takeaways

• Chatty's paid plans include a set number of "AI conversations" per month; going over triggers automatic overage charges at plan-specific rates.
• Overage billing can double or triple your monthly cost during high-traffic periods (product launches, Black Friday, viral posts).
• Flat-rate tools like kolton.ai cap replies instead of adding charges; the bill in a spike month is identical to a quiet month.
• For Shopify stores with unpredictable traffic, flat pricing is easier to budget and removes the incentive to ration AI responses.
• Chatty's model works if your conversation volume is stable and stays well under the cap; it becomes expensive fast if you grow or have seasonal spikes.

What Chatty counts as a "conversation"

Chatty's pricing revolves around AI conversations. A conversation typically starts when a customer opens the chat widget and the AI sends at least one reply. If the same customer returns hours or days later, that may count as a new conversation depending on the session window (often 24 hours). Multi-turn back-and-forth within one session usually counts as a single conversation, but check Chatty's help docs for the current definition because vendors change session rules.

The important point: you do not control when a conversation starts. A visitor who types "Hi" and immediately closes the window still consumes one conversation if the AI answered. A customer who asks three questions in a row, waits a day, then asks a fourth question may trigger two conversations.

How Chatty's overage charges work

According to Chatty's pricing documentation, paid-plan users are "automatically charged according to your plan's overage rates" when they exceed the included conversations. The exact per-conversation overage rate is tied to your plan tier (lower tiers often pay more per extra conversation than higher tiers).

Here's what that looks like in practice:

• Your plan includes 500 conversations per month at $79.
• You hit 650 conversations in November because you ran a sale.
• Chatty bills you the base $79 plus an overage fee for the extra 150 conversations.
• If the overage rate is $0.50 per conversation, that's an additional $75, bringing your November bill to $154.

The overage rate itself is not always published on the public pricing page, so stores often discover the actual cost only after the first spike month. Some vendors set overage rates high enough that you're better off upgrading to the next tier proactively.

When overage billing gets expensive fast

Overage models are predictable and affordable if your conversation volume is stable and sits comfortably under the cap. They become a problem in three scenarios:

1. Seasonal spikes. Black Friday, Cyber Monday, holiday gift shopping, or a product launch can triple your normal conversation count in a single week. If you budgeted $79/month and your November bill lands at $240 because of overages, that eats into the margin you expected from the sale.

2. Viral or influencer traffic. A TikTok video or Instagram reel featuring your product can send thousands of visitors to your store in 48 hours. Many will open the chat widget to ask questions. Even if only 10% engage, that's hundreds of conversations you didn't plan for.

3. Steady growth. If your store adds 20% more traffic every quarter, you'll blow past your conversation cap within a few months. You either accept rising overage charges or upgrade to a higher tier before you actually need the other features that come with it.

In all three cases, the final bill is unpredictable. You can't easily forecast what you'll owe until the month closes and you see the usage report.

Flat-rate pricing: how kolton.ai's model compares

kolton.ai uses a different approach. Every plan includes a set number of AI replies per month. If you go over that number, the AI keeps working and the bill does not change. There are no overage fees, no per-conversation charges, and no surprise line items on your Shopify invoice.

For example, the Growth plan at $99/month includes 1,600 AI replies (2,080 on the annual plan). If your store has a viral week and the agent sends 2,200 replies, the November bill is still $99. If December is quieter and the agent sends 900 replies, the bill is still $99. Billing runs through Shopify Billing, so you see one flat charge each month and you can cancel anytime from your Shopify admin.

The tradeoff: if you consistently need more volume than your plan includes, you move up to the next tier. The Pro plan at $299/month includes 5,000 replies per month (6,500 on the annual plan). That jump in capacity handles most Shopify stores that have outgrown the Growth tier, and it's still cheaper than many competitors' overage bills during a single busy month.

You can compare all the plan details at kolton.ai/pricing.

Conversation caps vs. reply caps: what's the difference?

Chatty and similar tools count conversations (each new session or customer interaction). kolton.ai counts replies (each individual message the AI sends). The two metrics are not directly comparable, so here's a rough translation:

• One conversation often includes 3 to 5 AI replies if the customer asks follow-up questions.
• A Chatty plan with 500 conversations might translate to roughly 1,500 to 2,500 kolton.ai replies, depending on how chatty your customers are.
• If your customers mostly ask single questions ("What's your return policy?"), one conversation is closer to one reply. If they browse products, ask for recommendations, and negotiate discounts in the same session, one conversation could easily generate 8+ replies.

The key difference is not the unit of measurement, it's what happens when you exceed the limit. Chatty adds charges. kolton.ai does not.

Should you choose overage billing or flat-rate pricing?

The right model depends on your traffic pattern and how much billing volatility you can tolerate.

Overage billing (Chatty-style) makes sense if:

• Your conversation volume is stable month to month.
• You're confident you'll stay well under the cap (at least 20 to 30% headroom).
• You prefer to pay only for what you use, even if that means variable bills.
• You can absorb surprise charges during a spike month without scrambling to adjust your budget.

Flat-rate pricing (kolton.ai-style) makes sense if:

• Your traffic is seasonal or unpredictable.
• You've had viral posts, influencer mentions, or product launches that spiked traffic before.
• You want a predictable bill every month, no matter what happens.
• You'd rather know the exact cost upfront than risk overage fees.
• You run a multi-channel operation (email, Instagram, Facebook, WhatsApp) and need one tool to handle all of it without per-channel add-ons.

For most Shopify stores, flat pricing removes one variable from the budget and one source of stress during high-traffic periods. You're not rationing AI replies or worrying whether a successful campaign will cost you an extra $200 in chatbot fees.

Other pricing models in the market

Chatty is not the only vendor using conversation caps and overages. According to industry research on AI chatbot pricing in 2025, outcome-based or per-resolution billing is also common, especially among enterprise-focused platforms. These models charge around $2 per resolved conversation, which can add up to $600 to $2,000 per month for a store handling 300 to 1,000 support tickets.

Other vendors offer tiered pricing with hard caps (the chatbot stops working when you hit the limit unless you upgrade). A few still sell custom enterprise plans with annual contracts and hidden fees. The flat monthly subscription model (with or without reply caps) is less common but growing, particularly among tools built specifically for Shopify and small to mid-sized ecommerce.

According to a 2025 pricing survey, mid-tier AI chatbot plans for ecommerce typically land between $30 and $150 per month, though that range does not account for overage fees or per-resolution charges that can significantly raise the effective cost.

How to estimate your own conversation or reply volume

If you're comparing Chatty's conversation caps to kolton.ai's reply caps, start by tracking your current support and sales volume:

1. Check your email ticket count. How many customer emails do you answer per month? Each email thread is roughly one conversation.
2. Add Instagram and Facebook DMs. Count the number of DM threads you handle. Each thread is one conversation, but customers who ask multiple questions in the same thread generate multiple replies.
3. Estimate web chat sessions. If you already have a chat widget, pull the session count from your current tool's analytics. If you don't have chat yet, assume 2 to 5% of your monthly site visitors will open the widget.
4. Factor in comments (if you want the AI to reply publicly). kolton.ai's Growth and Pro plans include AI replies to public Instagram and Facebook comments. If you get 50 comments per post and publish twice a week, that's roughly 400 comments per month. Not every comment needs a reply, but many do.

Once you have a rough monthly count, add 30 to 50% headroom for growth or spikes. That gives you the volume to compare against each vendor's caps.

What happens when you outgrow your plan?

On Chatty, outgrowing your plan means either accepting rising overage charges each month or upgrading to the next tier (and paying for features you may not need yet). On kolton.ai, outgrowing your plan means moving to the next tier when you consistently exceed the included replies. The difference is that kolton.ai's overage behavior (the AI keeps working, the bill stays flat) buys you time to decide when to upgrade instead of forcing your hand mid-month.

Both platforms let you upgrade anytime. kolton.ai's billing runs through Shopify, so upgrades and downgrades are instant and prorated.

FAQ

Does Chatty charge overage fees on all plans?

Chatty's paid plans include a set number of AI conversations per month, and additional conversations beyond that limit are "automatically charged according to your plan's overage rates," according to their pricing documentation. The exact overage rate per conversation depends on your plan tier and is not always listed on the public pricing page. Check with Chatty support or review your billing agreement for the specific rate.

Can I turn off the AI temporarily to avoid hitting my conversation cap?

Most AI chatbot platforms, including Chatty, let you disable the AI through the admin dashboard. If you turn off the AI, incoming chats either go unanswered or route to your human team (if you've set up that fallback). Disabling the AI prevents new conversations from counting against your cap, but it also means customers don't get immediate answers, which can hurt conversion and satisfaction. On kolton.ai, going over your included replies does not add charges, so there's no reason to disable the agent during a spike.

How does kolton.ai count replies across multiple channels?

kolton.ai counts every message the AI sends, regardless of channel (web chat, email, Instagram DM, Facebook Messenger, WhatsApp, or public comment reply). One customer conversation that spans email and Instagram would generate multiple replies, and each reply counts toward your monthly total. The key difference is that exceeding your plan's included replies never triggers an additional charge. The bill is flat every month, and the AI keeps working.

What if I need more volume than the Pro plan includes?

kolton.ai's Pro plan includes 5,000 AI replies per month (6,500 on the annual plan) and supports multiple Shopify stores. If you consistently exceed that volume, reach out to the kolton.ai team to discuss custom capacity. For most Shopify stores, even high-volume ones, 5,000 to 6,500 replies per month is enough to handle sales, support, and comment moderation across all channels.

Does Chatty integrate with Shopify the same way kolton.ai does?

Chatty offers a Shopify integration, but it does not pull live product, stock, and order data from Shopify in the same way kolton.ai does. kolton.ai's agent answers product questions, makes recommendations, and resolves support issues (WISMO, returns, refunds) using your store's real-time catalog and order history. That tight Shopify integration is a core part of kolton.ai's positioning. Chatty's integration focuses more on lead capture and general chat automation.

Can I switch from Chatty to kolton.ai without losing conversation history?

Most AI chatbot platforms do not export full conversation transcripts in a format that another platform can import directly. If you switch from Chatty to kolton.ai, you'll lose access to old Chatty conversations unless you export them manually as a backup. kolton.ai starts fresh with your Shopify store data and begins handling new conversations immediately. For ongoing customer threads (like a return in progress), your team can brief the AI using kolton.ai's Copilot feature or handle the conversation manually until it's resolved.

One more thing to consider: per-channel pricing

Some AI chatbot platforms charge separately for each channel you add (web chat is included, but email costs extra, Instagram costs extra, WhatsApp costs extra). kolton.ai's Growth and Pro plans include all channels at no additional charge: web chat, email, Instagram DMs and comments, Facebook Messenger and comments, WhatsApp, Telegram, and Shopify storefront chat. If you're comparing Chatty's base price to kolton.ai's, make sure you're accounting for any per-channel add-ons Chatty charges. The effective price difference can be wider than it looks at first glance.

Which model fits your store?

If your Shopify store has stable, predictable traffic and you're confident you'll stay under Chatty's conversation cap every month, overage billing may work fine. If your store is growing, seasonal, or prone to traffic spikes from campaigns and influencer posts, flat-rate pricing removes the risk of surprise charges and makes budgeting straightforward.

kolton.ai's flat monthly price covers both sales and support across every channel, pulls live data from your Shopify catalog and orders, and never adds overage fees or per-resolution charges. Compare the plans and see what fits your volume at kolton.ai/pricing.