AI chatbot pricing in 2026: what 9 tools really cost
Every vendor counts differently: credits, messages, queries, conversations or resolutions. This guide puts nine popular tools on one page so a small business can see the real cost of answering customers with AI.
For a small business, AI support chatbots cost from $0 to about $150 a month at entry level. List prices per 1,000 answers range from about $10 (Fini.ai) and $14 (Chatling) to $57 (Chatbase Hobby) and $99 (CustomGPT.ai), while per-resolution agents charge $0.99 per resolution (Intercom Fin).
The comparison
| Tool | Unit it charges for | Free tier | Entry paid plan | ≈ cost per 1,000 units at entry |
|---|---|---|---|---|
| Fini.ai | AI reply | 250 replies/mo | $19 · 2,000 replies | $9.50 |
| Chatling | Credit | 200 credits/mo | $25 · 1,750 credits | $14.30 |
| SiteGPT | Message (varies by model) | None | $59 · 4,000 light-model messages | $14.75 (or $147.50 on GPT-4.1) |
| Wonderchat | Credit (~5 per resolution) | 20 credits | ~$149 · 5,000 credits | ~$30 per 1,000 credits (~$0.15 per resolution) |
| Chatbase | Message credit | 50 credits/mo | $40 · 700 credits | $57 |
| CustomGPT.ai | Query | 7-day trial | $99 · 1,000 queries | $99 |
| Botpress | Conversation | Small allowance | ~$187.50 · 250 conversations | $750 per 1,000 conversations |
| Intercom Fin | Outcome / resolution | Trial | $0.99 each + seats | $990 per 1,000 resolutions |
| Voiceflow | Credits (sales-led) | Trial | Not published | — |
Units are not identical: a credit, a message and a reply are close, while a conversation or resolution usually covers several messages. Monthly list prices; yearly billing is cheaper for most tools. Checked 24 Sep 2026 on each vendor's pricing page.
The four hidden costs to check
- Model multipliers. Some tools charge more credits for better AI models, so the same plan answers fewer questions.
- Seats. Several tools cap teammates by plan; Intercom charges per helpdesk seat on top of Fin.
- Gated actions. Order lookups, refunds and bookings are often limited on cheap plans, which is exactly what makes an agent useful.
- Branding removal. Chatbase sells it as a $99/mo add-on; others include it only on top plans.
Which pricing model is best for a small business?
Flat plans with a clear message count are the easiest to budget for when volume is modest. Per-resolution pricing makes sense at higher volume, when you want the vendor to share the risk of the AI not helping. Many teams start flat and add per-resolution automation inside their helpdesk later, which is how Fini's Resolve add-on ($0.39 per resolved ticket) is designed.
How to estimate your monthly volume
Take your monthly support conversations and multiply by 3 to 4 AI replies per conversation. A shop with 400 chats a month needs roughly 1,200–1,600 replies, which fits a $19 Fini Starter plan.
Questions
How much does an AI chatbot cost for a small business?
Typically $0–$150 a month to start. Free plans range from 20 credits (Wonderchat) to 250 AI replies (Fini.ai); popular entry plans cost $19–$59 a month.
What is the cheapest AI chatbot for customer support?
On list price per answer at the entry level, Fini.ai ($19 for 2,000 replies) and Chatling ($25 for 1,750 credits) are among the lowest, as of September 2026.
Is per-resolution pricing better?
It aligns cost with results but costs more per conversation, for example $0.99 per resolution on Intercom Fin. It suits higher-volume helpdesk teams more than small websites.
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