Table of Contents
- Key takeaways: AI chatbot pricing at a glance
- How this AI chatbot pricing comparison works
- How much does an AI chatbot cost per month?
- What the math shows
- What counts as a message, a credit, a conversation and an outcome
- AI chatbot pricing by platform
- 1. Botsonic pricing: best for the lowest entry price
- 2. SiteGPT pricing: best for a flat bill at 5,000 or more conversations
- 3. Chatbase pricing: best for a free plan to test with
- 4. Landbot pricing: best for scripted flows with published overage prices
- 5. CustomGPT pricing: best for large document libraries
- 6. Tidio pricing: best for live chat with an AI add-on
- 7. Botpress pricing: best for custom agents built by developers
- 8. Tars pricing: best for mid-size teams that want a managed setup
- 9. Fin pricing: best for paying only for resolved conversations
- 10. Zendesk pricing: best for teams that already run Zendesk
- 11. Voiceflow pricing: best for enterprise teams that negotiate a contract
- What is the cheapest AI chatbot?
- AI chatbot costs beyond the plan price
- How to choose an AI chatbot pricing model
- AI chatbot pricing cheat sheet
- AI chatbot pricing FAQ
- Cost basics
- How much does an AI chatbot cost?
- How much does a chatbot cost per month for a small business?
- Is there a setup or maintenance cost?
- Billing units
- What is the difference between per-message and per-outcome pricing?
- Why does the same chatbot plan cover fewer messages on a larger model?
- Does per-outcome pricing get more expensive over time?
- Cheap and free options
- What is the cheapest AI chatbot?
- Is there a free AI chatbot for a website?
- Enterprise and compliance
- How much does an enterprise AI chatbot cost?
- What does a HIPAA compliant AI chatbot cost?
- Sources

- Entry prices: Botsonic starts at $19 a month, Chatbase at $40, Landbot at $45, SiteGPT at $59 and CustomGPT at $99, all billed monthly.
- At 1,000 AI conversations a month: Botsonic costs $49 and SiteGPT costs $59. Fin costs up to $990 before seats.
- At 5,000 AI conversations a month: SiteGPT costs $188, Botsonic $349 and Chatbase $500. Fin costs up to $4,950 before seats.
- Billing units differ. Vendors charge per message, credit, query, conversation or outcome, so two list prices cannot be compared until both are converted to the same volume.
- Not published: Voiceflow shows no prices. Zendesk and Tidio do not publish what high AI volumes cost.
Key takeaways: AI chatbot pricing at a glance
Platform | Best for | Entry paid plan | Billing unit |
Botsonic | The lowest entry price | $19 a month, or $16 a month billed annually | Message |
A flat bill at 5,000 or more conversations | $59 a month, or $39 a month billed annually | Message | |
Chatbase | A free plan to test with | $40 a month | Message credit |
Landbot | Scripted flows with published overage prices | $45 a month, or $36 a month billed annually | Chat |
CustomGPT | Large document libraries | $99 a month, or $89 a month billed annually | Query |
Tidio | Live chat with an AI add-on | $24.17 a month billed annually | Billable conversation |
Botpress | Custom agents built by developers | $150 a month billed annually | Conversation |
Tars | Mid-size teams that want a managed setup | $499 a month | Conversation |
Fin | Paying only for resolved conversations | $0.99 per outcome, plus Intercom seats from $29 a month billed annually | Outcome |
Zendesk | Teams that already run Zendesk | $55 per agent a month paid yearly | Seat plus automated resolution |
Voiceflow | Enterprise teams that negotiate a contract | Not published | Not published |

How this AI chatbot pricing comparison works
- Source. Every price comes from the vendor's own pricing page. All prices are in US dollars.
- Billing period. Each price says whether it is billed monthly or annually. Cost tables use monthly billing where the vendor offers it.
- Fixed volumes. Costs are calculated at 1,000, 5,000 and 10,000 AI conversations a month.
- One conversation. A conversation is three customer questions and three AI replies. Vendors that bill per message, credit or query are charged three units per conversation.
How much does an AI chatbot cost per month?
Platform | 1,000 conversations | 5,000 conversations | 10,000 conversations | How the 5,000 figure is built |
Botsonic | $49 | $349 | $524 | Advanced at $299 plus two packs of 2,000 messages at $25 |
$59 | $188 | $365 | Growth at $129 plus one pack of 5,000 messages at $59 | |
Chatbase | $150 | $500 | $1,100 | Pro at $500 with 15,000 credits |
Landbot | $160 | $705 | $1,455 | Professional at $110, plus 2,500 extra chats at $0.05 and 4,700 extra AI chats at $0.10 |
CustomGPT | $499 | Not published | Not published | Premium stops at 5,000 queries. Higher volume is an Enterprise quote |
Botpress | $670 | $2,500 | $5,000 | Team at $750 billed annually, plus 35 packs of 100 conversations at $50 |
Fin | Up to $990 | Up to $4,950 | Up to $9,900 | 5,000 outcomes at $0.99. Intercom seats are extra |
Tars | Not published | Not published | Not published | The plan card shows $499 a month at 500 conversations |
Tidio | Not published | Not published | Not published | Lyro AI quotas above 50 conversations are priced in a plan builder |
Zendesk | Not published | Not published | Not published | No public price per automated resolution |
Voiceflow | Not published | Not published | Not published | No public prices |

- SiteGPT figures use GPT-4.1-mini messages. The same plans cover one tenth as many GPT-4.1 messages. The 10,000 figure is Growth at $129 plus four message packs at $59. Scale at $429 a month covers the same volume with 40,000 messages and more features.
- Fin bills per outcome. A conversation with no outcome is free. The figures assume every conversation ends in an outcome, so they are a ceiling. At a 50% outcome rate the cost is $495, $2,475 and $4,950.
- Botpress prices are billed annually. The page shows no monthly rate.

What the math shows
- At 1,000 conversations, Botsonic at $49 is $10 a month cheaper than SiteGPT at $59. That is a 17% saving, or $120 a year.
- At 5,000 conversations, SiteGPT at $188 is $161 a month cheaper than Botsonic at $349. That is a 46% saving, or $1,932 a year.
- At 10,000 conversations, SiteGPT at $365 is $159 a month cheaper than Botsonic at $524 and $735 cheaper than Chatbase at $1,100.
- Fin at full outcome volume costs $4,950 at 5,000 conversations. That is 26 times the SiteGPT figure, before Intercom seats.
What counts as a message, a credit, a conversation and an outcome
Platform | Billing unit | Included on the entry plan | Entry price per 1,000 units |
Message: the customer's question and the AI's reply | 4,000 GPT-4.1-mini messages, or 400 GPT-4.1 messages | $14.75 | |
Botsonic | Message | 1,000 messages | $19.00 |
Chatbase | Message credit | 700 credits | $57.14 |
Landbot | Chat, with a separate AI chat allowance | 500 chats and 100 AI chats | $90.00 |
CustomGPT | Query | 1,000 queries | $99.00 |
Botpress | Conversation with at least two messages from the end user | 250 conversations | $600.00 |
Fin | Outcome | None | $990.00 |
Tars | Conversation | 500 conversations | $998.00 |
AI chatbot pricing by platform
1. Botsonic pricing: best for the lowest entry price

Plan | Billed monthly | Billed annually (per month) | Messages a month | Chatbots | Team members |
Starter | $19 | $16 | 1,000 | 1 | 1 |
Professional | $49 | $41 | 3,000 | 2 | 2 |
Advanced | $299 | $249 | 12,000 | 2 | 5 |
Enterprise | Custom | Custom | Custom | Custom | Custom |
- Add-ons: 2,000 extra messages for $25 a month. Branding removal is $49 a month. Zendesk handoff is $199 a month. API access is $49 a month below Advanced.
- Trial: 7 days on every paid plan.
- Cost at 1,000, 5,000 and 10,000 conversations: $49, $349 and $524 a month.
- Watch for: the jump from Professional at $49 to Advanced at $299.
2. SiteGPT pricing: best for a flat bill at 5,000 or more conversations

Plan | Billed monthly | Billed annually (per month) | Messages a month | Pages | Chatbots | Team members |
Starter | $59 | $39 | Up to 4,000 | 1,000 | 1 | 1 |
Growth | $129 | $79 | Up to 10,000 | 10,000 | 2 | 4 |
Scale | $429 | $259 | Up to 40,000 | 50,000 | 3 | 10 |
Enterprise | Custom | Custom | Custom | Custom | Custom | Custom |
- Add-ons: 5,000 extra messages, branding removal and WhatsApp each cost $39 a month billed annually. The message pack is $59 a month on monthly billing.
- Trial: 7 days. A credit card is required. There is no free plan.
- Cost at 1,000, 5,000 and 10,000 conversations: $59, $188 and $365 a month.
- Watch for: message allowances are for GPT-4.1-mini. Each plan covers one tenth as many GPT-4.1 messages.
- Limits: Starter has no chat integrations and refreshes content manually. The Zendesk integration starts on Scale. SiteGPT has no Intercom or HubSpot integration.
- Compliance: a signed DPA and a HIPAA BAA are available on Enterprise only.
3. Chatbase pricing: best for a free plan to test with

Plan | Billed monthly | Message credits a month | Members | Training size |
Free | $0 | 50 | 1 | 1 MB |
Hobby | $40 | 700 | 2 | 10 MB |
Standard | $150 | 4,000 | 3 | 20 MB |
Pro | $500 | 15,000 | 5 | 40 MB |
Enterprise | Custom | Custom | Custom | Custom |
- Add-ons: extra credits cost $40 per 1,000. Extra agents cost $25 each a month. Branding removal is $99 a month.
- Annual billing: 20% off.
- Trial: 7 days on paid plans. Agents on the free plan are deleted after 14 days of inactivity.
- Cost at 1,000, 5,000 and 10,000 conversations: $150, $500 and $1,100 a month, at one credit per AI reply.
- Watch for: Helpdesk, voice and API access start on Standard at $150.
4. Landbot pricing: best for scripted flows with published overage prices

Plan | Billed monthly | Billed annually (per month) | Chats a month | AI chats a month | Seats |
Free | $0 | $0 | 100 | 0 | 1 |
Starter | $45 | $36 | 500 | 100 | 2 |
Professional | $110 | $88 | 2,500 | 300 | 3 |
Business | Custom | Custom | Custom | Custom | From 5 |
- Overage: $0.05 per extra chat and $0.10 per extra AI chat.
- Trial: 14 days with no credit card, then the Free plan.
- Cost at 1,000, 5,000 and 10,000 conversations: $160, $705 and $1,455 a month, counting each AI conversation as one chat and one AI chat.
- Watch for: the AI chat allowance is small. Professional includes 300 AI chats.
5. CustomGPT pricing: best for large document libraries

Plan | Billed monthly | Billed annually (per month) | Queries a month | Agents | Documents per agent |
Standard | $99 | $89 | 1,000 | 10 | 5,000 |
Premium | $499 | $449 | 5,000 | 25 | 20,000 |
Enterprise | Custom | Custom | Custom | Custom | Custom |
- Trial: 7 days.
- Cost at 1,000 conversations: $499 a month, because 3,000 queries need Premium.
- Cost at 5,000 and 10,000 conversations: not published. Both volumes exceed Premium's 5,000 queries.
- Watch for: branding removal and website auto-sync start on Premium.
6. Tidio pricing: best for live chat with an AI add-on

Plan | Price billed annually (per month) | Billable conversations a month | Lyro AI conversations |
Free | $0 | 50 | 50, one time |
Starter | $24.17 | 100 | 50, one time |
Growth | From $49.17 | From 250 | 50, one time |
Plus | From $300 plus usage | Custom | Custom |
Premium | Custom | Custom | From 3,000 |
- Lyro AI agent: from $32.50 a month billed annually for 50 AI conversations. Self-serve quotas run from 50 to 1,000.
- Trial: 7 days.
- Cost at 1,000, 5,000 and 10,000 AI conversations: not published. The plan builder sets the price of each Lyro quota.
- Watch for: billable conversations cover chats and tickets your team handles. AI conversations are a second meter.
7. Botpress pricing: best for custom agents built by developers

Plan | Price | Conversations included | Extra conversations | Seats |
Free | $0 | 25 | None | 3 |
Plus | $150 a month billed annually | 250 a month | $65 per 100 | 3 |
Team | $750 a month billed annually | 1,500 a month | $50 per 100 | Unlimited |
Enterprise | Custom | Custom | Custom | Unlimited |
- AI usage: $25 a month is included on Plus and $150 on Team. Extra AI spend is added in $10 grants.
- Overage: a pack of 100 conversations is added automatically at 95% of the quota. Auto-recharge cannot be turned off.
- Cost at 1,000, 5,000 and 10,000 conversations: $670, $2,500 and $5,000 a month.
- Watch for: a conversation counts once the end user sends two messages.
8. Tars pricing: best for mid-size teams that want a managed setup

Plan | Billed monthly | Conversations a month | Knowledge bases |
Freemium | $0 | 50 | 5 |
Premium | $499 | 500 on the plan card | 20 |
Enterprise | Custom | Custom | Unlimited |
- Annual billing: 17% off.
- Add-ons: live chat handoff is $600 a year per seat. Professional support services are $5,000 a year per agent.
- Cost at 1,000, 5,000 and 10,000 conversations: not published. A volume selector on the Premium card offers up to 10,000 conversations.
- Watch for: HIPAA is listed on Enterprise only.
9. Fin pricing: best for paying only for resolved conversations

Item | Price | Notes |
Fin outcome | $0.99 | Charged per outcome |
Essential seat | $29 per seat a month | Billed annually |
Advanced seat | $85 per seat a month | Billed annually |
Expert seat | $132 per seat a month | Billed annually. Lists HIPAA support |
Fin on another helpdesk | $0.99 per outcome | 50 outcomes a month minimum. No seats required |
Pro add-on | From $99 a month | Analysis and quality tools |
- Trial: 14 days.
- Cost at 1,000, 5,000 and 10,000 conversations: up to $990, $4,950 and $9,900 a month, before seats.
- Watch for: the bill rises as Fin resolves a larger share of conversations.
10. Zendesk pricing: best for teams that already run Zendesk

Plan | Price per agent a month, paid yearly |
Support Team | $19 |
Suite Team | $55 |
Suite Professional | $115 |
- AI agents: Zendesk bills AI agent usage in automated resolutions. Plans include an allowance, and resolutions above it cost extra.
- Price per automated resolution: not published on the pricing page.
- Trial: 14 days with no credit card.
- Cost at 1,000, 5,000 and 10,000 conversations: not published.
11. Voiceflow pricing: best for enterprise teams that negotiate a contract

Track | Price | How to start |
Agencies and partners | Not published. Usage-based billing | Free trial with no credit card |
Businesses | Not published | Book a demo |
- Cost at 1,000, 5,000 and 10,000 conversations: not published.
- Watch for: budgeting needs a sales call.
What is the cheapest AI chatbot?
Platform | Free allowance | Limit to know |
Chatbase | 50 message credits a month | Agents are deleted after 14 days of inactivity |
Botpress | 100 conversations | No top-ups or overages |
Landbot | 100 chats a month | No AI chats included |
Tidio | 50 billable conversations a month | 50 Lyro AI conversations, one time |
Tars | 50 conversations a month | Basic models only |
AI chatbot costs beyond the plan price
Extra cost | Published examples |
Branding removal | SiteGPT $39 a month billed annually. Botsonic $49 a month. Chatbase $99 a month. CustomGPT includes it from Premium at $499 |
Overage | Chatbase $40 per 1,000 credits. Botpress $65 per 100 conversations on Plus. Landbot $0.10 per AI chat |
Seats | Intercom $29 to $132 per seat a month billed annually. Zendesk $19 to $115 per agent a month paid yearly |
Human handoff | Botsonic Zendesk handoff $199 a month. Tars live chat $600 a year per seat. Chatbase Helpdesk starts on Standard at $150 |
Setup and services | Fin lists no setup, integration or platform fees. Tars professional services cost $5,000 a year per agent |
How to choose an AI chatbot pricing model
If you need | Pick | Why |
The lowest bill under 1,000 conversations a month | Botsonic | Professional is $49 a month for 3,000 messages |
The lowest bill at 5,000 to 10,000 conversations a month | $188 to $365 a month on Growth with message packs | |
A free plan to test before buying | Chatbase | 50 credits a month at no cost |
Scripted lead flows with a little AI | Landbot | Chats cost $0.05 each above the plan |
To pay only for resolved conversations | Fin | $0.99 per outcome, nothing for unresolved chats |
AI inside a helpdesk your agents already use | Zendesk or Fin | The AI and the inbox share one record |
Custom agent logic built by developers | Botpress | Unlimited agents from $150 a month billed annually |
A large document library and few questions | CustomGPT | 5,000 documents per agent on Standard |
A signed HIPAA BAA | An Enterprise plan | SiteGPT, Chatbase and Tars list HIPAA on Enterprise only. Intercom lists it on Expert |

AI chatbot pricing cheat sheet
Scenario | Pick | Reason |
Solo founder with 300 conversations a month | Botsonic Starter | $19 a month covers 1,000 messages |
Online store with 1,000 conversations a month | Botsonic Professional or SiteGPT Starter | $49 and $59 a month |
SaaS company with 5,000 conversations a month | SiteGPT Growth plus one message pack | $188 a month |
Team with 10,000 conversations a month | SiteGPT Growth plus four packs, or Scale | $365 or $429 a month |
Team with 150 conversations a month and one agent | Fin with one Essential seat | About $178 a month at most |
Team that already pays for Zendesk | Zendesk AI agents | No second vendor |
Agency that builds voice and chat agents | Voiceflow | Usage-based partner billing |
Lead capture flows on WhatsApp | Landbot Professional | WhatsApp is an add-on from Professional |




