SparkGPT vs SiteSpeakAI: Which Pricing Model Actually Fits a Small Store?

What SiteSpeakAI does well

Credit where it is due. SiteSpeakAI has grown into more than a question answering widget. Its agents can capture leads mid conversation, book meetings, look up orders, and escalate to a human with full context. It supports more than 95 languages, connects to Shopify, WordPress, Webflow, Slack, Notion, and Zapier, and higher tiers let you bring your own API keys for OpenAI, Anthropic, or Google models. The $29 Starter plan is one of the cheaper paid entry points in this category, and every paid plan comes with a 7 day free trial.

If you run a documentation heavy SaaS or a service business that lives on booked meetings, those are genuinely useful capabilities.

Where the two products point in different directions

SiteSpeakAI describes itself as an agent that "answers and acts." The actions it lists are support and operations actions: answer the question, capture the lead, book the meeting, hand off to a human. Its analytics dashboard measures conversation volume, AI resolution rates, and response times. Those are support metrics. They tell you how many questions the bot closed, not how much money it made you.

SparkGPT is built on a different premise: the chat window is a sales channel, not a ticket deflector. The agent, powered by Anthropic Claude, learns your catalog from your URL in about 10 minutes, then guides visitors toward a purchase. It recommends products, answers pre sale objections, and nudges hesitant shoppers toward checkout. Its dashboard measures one thing above all: attributed revenue. When a visitor chats with the agent and places an order within 24 hours, that sale appears in your ROI dashboard with the conversation that produced it.

Neither framing is wrong. They are different jobs. The question is which job you are hiring for.

Pricing, verified as of September 2026

SiteSpeakAI pricing, from its official pricing page:

Extra message credits cost $25 per 1,000. Annual billing saves up to 17%.

SparkGPT pricing:

Two structural differences matter more than the sticker prices.

First, the metered unit. SiteSpeakAI meters messages. SparkGPT meters outcomes. On SiteSpeakAI, a long conversation with an undecided shopper burns credits whether or not that shopper buys anything. The 30 credit free tier is gone after a handful of conversations, and a busy month on the Starter plan can push you into $25 per 1,000 overage territory. On SparkGPT Growth, conversations are unlimited. Ten chats or ten thousand chats cost the same $49 base. The variable part of your bill is 5% of attributed sales, which means the bill only grows when revenue grows.

Second, what the meter encourages. When you pay per message, every extra question a shopper asks costs you money, so the incentive is to keep conversations short. Sales conversations do not work that way. The shopper who asks six questions about sizing, shipping, and returns is exactly the shopper who is about to buy. A pricing model that penalizes long conversations penalizes selling.

The math for a real store

Say your store does $10,000 a month in revenue and your AI agent has a hand in $2,000 of it.

On SparkGPT Growth, you pay $49 plus 5% of $2,000, which is $149 total. Every dollar of that $100 variable fee is tied to an order you can see in the ROI dashboard, placed within 24 hours of a conversation with the agent.

On SiteSpeakAI, your bill depends on message volume, not results. A quiet month and a great month cost the same $79 on Pro. That sounds like an advantage until the quiet month arrives: you paid $79 and can point to resolved tickets, but the dashboard cannot tell you what the bot sold, because it does not track attributed revenue at all.

This is the trade at the heart of the comparison. Fixed subscriptions feel predictable, and they are, in both directions. You pay the same when the tool performs and when it does not. Performance based pricing feels variable, and it is, but the variance only goes up when your revenue goes up. For a small store owner watching every fixed cost, that asymmetry is the whole point.

SparkGPT also bills through prepaid credits, where 1 credit equals $1. If your balance runs out, the agent pauses rather than charging you unexpectedly. There is no surprise overage invoice.

Feature comparison

Read the table honestly and the split is clear. SiteSpeakAI wins on support tooling breadth: more language features, sentiment analytics, meeting booking, more model options. SparkGPT wins on the sales side: unlimited conversations, revenue attribution, and a fee structure that shares risk with you.

Which one should you pick?

Pick SiteSpeakAI if your main pain is repetitive support questions, you want the bot to book meetings, or you need broad multilingual support across a large knowledge base. It is a solid support product at a fair entry price.

Pick SparkGPT if you run an ecommerce or Shopify store and the question you actually care about is "did this thing sell anything?" SparkGPT is the only option of the two that can answer it, order by order, in the ROI dashboard. And its pricing means a bad month costs you $49, not $249.

If you are unsure, the free tiers settle it cheaply. SiteSpeakAI gives you 30 messages a month to evaluate. SparkGPT's free tier lets you build your agent and test it without limits, with no credit card and no expiry, so you can see exactly how it handles your catalog before paying anything.

Try it on your own store

Enter your URL at SparkGPT and you will have a working sales agent to test in about 10 minutes. Build it free, watch it answer real questions about your products, and only go live when you have seen it sell. Pricing details are on the pricing page, and the Chatbase comparison covers the biggest name in the category.

Frequently asked questions

How much does SiteSpeakAI cost?

As of September 2026, SiteSpeakAI offers a free plan with 30 message credits per month, then paid plans at $29 (Starter, 1,000 credits), $79 (Pro, 3,000 credits), $249 (Growth, 10,000 credits), and $499 (Business, 20,000 credits) per month. Extra messages cost $25 per 1,000. Annual billing saves up to 17%.

What is the main difference between SparkGPT and SiteSpeakAI?

SiteSpeakAI is an AI support agent priced by message volume. SparkGPT is an AI sales agent priced by results: $49 per month plus 5% of attributed sales. SparkGPT tracks which orders came from agent conversations through a 24 hour attribution window and shows them in an ROI dashboard. SiteSpeakAI does not track attributed revenue.

How does SparkGPT's 5% fee work?

When a visitor chats with your SparkGPT agent, the session is marked. Any order that visitor places within 24 hours counts as an agent attributed sale, appears in your ROI dashboard, and is billed at 5%. If the agent generates no sales, you pay only the $49 base fee. Billing runs on prepaid credits (1 credit equals $1), and the agent pauses if your balance runs out, so there are no surprise charges.

Does SparkGPT limit conversations like SiteSpeakAI's message credits?

No. The Growth plan includes unlimited conversations. SiteSpeakAI meters usage in message credits on every plan, from 30 per month on the free tier to 20,000 on the $499 Business plan, with overage at $25 per 1,000 messages.

Can I try both for free?

Yes. SiteSpeakAI's free plan includes 30 message credits per month, and its paid plans have a 7 day free trial. SparkGPT's free tier lets you build and test one agent with unlimited testing, no credit card, and no expiry. Going live with SparkGPT requires the Growth plan.

Which is better for a Shopify store?

Both integrate with Shopify. SiteSpeakAI focuses on support: answering questions, looking up orders, booking meetings. SparkGPT focuses on selling: recommending products, handling pre sale objections, and reporting attributed revenue per order. For a store whose bottleneck is conversion rather than ticket volume, SparkGPT's model fits better, and you can verify the revenue claim in your own dashboard within a day of going live.