Are you looking to add an AI chatbot to your HubSpot setup but not sure which tool is the best fit? In 2025, there are several options that integrate with HubSpot, each with its own strengths. This post will compare the 7 best AI chatbots for HubSpot, especially for small and mid-sized businesses (SMBs) seeking to enhance their customer support or lead generation. We’ll highlight what each chatbot is “best for” so you can pick the option that matches your needs.
Let’s dive into the list of top HubSpot-friendly AI chatbots:
1. Resolve247
Best for: any HubSpot plan and overall value
Resolve247 is an AI customer support chatbot designed to work on any HubSpot plan, including Free and Starter. It integrates directly into your existing HubSpot chat widget, to provide flexible and accurate conversational answers to visitors through the normal HubSpot chat widget and you can see the conversation in your normal HubSpot inbox. This means even if you’re not on HubSpot’s Enterprise tier, you can deploy a high quality AI assistant on your site without upgrading HubSpot. The bot can seamlessly hand off to a human agent when needed, providing a smooth experience for users.
Why Resolve247 is #1 for SMBs:
- Works on all HubSpot plans: Free, Starter, Pro, or Enterprise – no restrictions. Integration is as simple as clicking “Connect to HubSpot,” and you’re up and running. Small businesses don’t need to pay for HubSpot’s higher tiers just to get AI chat functionality.
- Cost-effective pricing: Plans start at $35/month for 2,000 AI responses (about 600-800 conversations, which is roughly $0.05 per conversation). This is 95% cheaper than HubSpot’s own AI chatbot.
- Custom instructions & AI control: You can fine-tune Resolve247’s AI with custom behavior instructions on every plan. For example, you can tell the bot to always ask certain qualifying questions, to promote certain offers/deals, or to promote a specific product to enterprise prospects. HubSpot’s built-in AI doesn’t allow any such customization.
- “Anti-hallucination” accuracy guarantee: Resolve247 is so confident in its AI answers that it offers an Anti-Hallucination Guarantee – if the bot ever makes up an answer not supported by your content, they will credit you (essentially guaranteeing accuracy). In practice, the bot uses a multi-step checking process to ensure it only responds with factual, relevant info from your knowledge base.
- Hands-on support and quick setup: Unlike other solutions, Resolve247 provides personal onboarding help. The team of AI experts is available to assist with setup (they even offer screen-share support) and optimization so you get the most out of the chatbot. Many SMBs appreciate this white-glove approach, especially if they don’t have in-house AI experts. That’s in stark contrast to the standard support you’d get for HubSpot’s native features.
Resolve247 essentially gives you an AI chatbot with enterprise-quality responses, without the enterprise price or limitations. It’s the all-around winner for SMB use cases where you want a trustworthy, cost-effective AI answering customer questions on your website. (For a detailed comparison of HubSpot’s native AI vs Resolve247, see our guide on comparing HubSpot Breeze to Resolve247.)
To learn more how to add AI to HubSpot, you can read our article on How to add AI to HubSpot chat widget (on any plan). But the bottom line is that Resolve247 is the top choice for an all-round HubSpot AI chatbot solution – especially for small and mid-sized teams. (They even offer a 30-day free trial, no credit card required, to try it out.)
2. HubSpot’s Breeze Customer Agent
Best for: HubSpot Enterprise users
HubSpot’s Breeze Customer Agent is the CRM’s native AI chatbot feature introduced in 2025. If you’re on HubSpot Service Hub Professional or Enterprise, you automatically have access to this AI support agent within HubSpot. The Breeze Customer Agent lives inside your HubSpot chatflows and Conversations Inbox, making it a convenient choice for those already on the higher-tier plans. Unlike HubSpot’s old chatflow builder, this can conversationally respond to questions that your customers ask in the chat widget.
Key points about HubSpot’s AI Customer Agent:
- Seamless HubSpot integration: Because it’s built by HubSpot, Breeze AI is tightly integrated. If you’re on the right HubSpot plan, you can add Breeze Customer Agent to your account from within the HubSpot dashboard (first configure settings, then assign it to a channel, full instructions here).
- Good for basic FAQs: The Breeze Customer Agent works well for answering frequently asked questions using your knowledge base. It can handle free-form questions in multiple languages and respond conversationally (unlike the old rule-based bots). HubSpot has also enabled some light “action” capabilities – with developer help, the AI bot can perform tasks like looking up an order status if configured via HubSpot’s Actions API.
- Only available on Pro & Enterprise: The biggest limitation is plan availability. HubSpot restricts the AI Customer Agent to Professional and Enterprise tiers. If you’re on Free or Starter plans, you cannot use this AI chatbot at all.
- Credit-based usage & extra costs: Even if you have access, the AI conversations are metered by HubSpot Credits. Each AI conversation uses 100 credits. Pro plans include 3,000 credits (30 conversations) per month, and Enterprise includes 5,000 (50 conversations) – after that, you pay for additional credits. This is enough to test that everything is ok, but not enough to use in reality. After this small test quantity, conversations cost about $1 each in credit purchases. For example, handling 100 chats in a month would consume all your included credits and then ~$50-70 in extra credit fees.
- No customization of AI behavior: HubSpot’s AI is essentially a black-box – you cannot customize its instructions beyond feeding it your content. There’s no way to tell the bot to follow specific business rules. It will simply try to answer based on your knowledge base. This is fine for basic Q&A, but if you need a tailored experience, it’s a drawback.
- Designed for enterprise orgs: Breeze Customer Agent works best if you’re already a larger company on HubSpot’s enterprise stack. Those users benefit from the one-stop convenience and don’t mind the higher cost. It’s less suitable for startups, SMBs or anyone who’s budget conscious.
In summary, HubSpot’s Breeze Customer Agent is “best for HubSpot Enterprise users” or those who are already paying for top-tier HubSpot and want an integrated (but relatively rigid) AI helper. It’s easy to deploy if you meet the requirements. However, the trade-offs are the high cost per conversation and the fact that it’s locked behind expensive plans. For companies that do qualify, Breeze can handle simple support queries and reduce live agent load. But many growing teams find they outgrow Breeze’s limits and seek more flexible or affordable alternatives (which is where third-party options like Resolve247 come in, as discussed above).
(For a deep review of HubSpot’s Breeze AI Customer Agent, including pricing examples and setup tips, see our full article: HubSpot Breeze Customer Agent: Review, Pricing & Setup Guide)
3. QuickBlox Medical AI Chatbot
Best for: Healthcare (HIPAA compliance)
QuickBlox offers a SmartChat AI Assistant that is specifically geared towards healthcare and medical use cases. This chatbot platform is all about HIPAA compliance – making it ideal for hospitals, clinics, telehealth providers, or any business that handles protected health information.
Key features that make QuickBlox “best for healthcare”:
- HIPAA-Compliant: QuickBlox provides a HIPAA-compliant chatbot setup. They offer a Business Associate Agreement (BAA) for medical clients. For enterprise clients, there is also the option for a dedicated server.
- Patient-Facing and Internal Use: Healthcare organizations can use QuickBlox’s AI chatbot on their website to answer patient inquiries (appointment scheduling, common symptoms, insurance info, etc.), reducing call volumes. Or it can be used internally to help with answering questions, looking up answers, summarising appointment notes etc.
- Integration Capabilities: While QuickBlox is a standalone platform, it can integrate into your HubSpot system via API. Even though it’s not a native HubSpot app, it can work alongside HubSpot by handling the chat on your site and then passing data into HubSpot, ensuring your patient inquiries are captured in your CRM.
In essence, QuickBlox’s Medical AI Chatbot is HIPAA compliant and tailored to suit the Healthcare sector. It’s the best choice for clinics, hospitals, or telehealth startups that need an AI chat assistant but cannot compromise on HIPAA compliance. By using QuickBlox, a clinic can confidently automate part of their patient communication – while being compliant. This is not a one-size-fits-all bot; it’s a specialized solution for a highly regulated industry.
(For more information, you can visit QuickBlox’s official page on AI-Powered Healthcare Chatbot solutions – they outline how their “HIPAA Compliant SmartChat Assistant” works with secure data handling.)
4. treble.ai
Best for: WhatsApp responses
Treble.ai focuses on bringing AI-powered chat automation to WhatsApp, and it integrates directly with HubSpot. It’s perfect for SMBs that rely on WhatsApp to communicate with leads and customers. HubSpot doesn’t natively support WhatsApp messaging in its chat widget, so treble.ai fills that gap. With treble.ai, you can run automated WhatsApp conversations (for marketing, sales, or support) and have all those interactions sync back into HubSpot for a unified view.
Why treble.ai is “best for WhatsApp responses”:
- WhatsApp + HubSpot Integration: Treble.ai is a verified WhatsApp Business API solution that connects with HubSpot. It allows you to answer WhatsApp messages from within HubSpot’s interface (through the Conversations inbox) and log those chats to contact records. New leads from WhatsApp can be captured into HubSpot automatically.
- AI Chatbots for WhatsApp: With treble.ai, you create your chatbot flows to handle how you want the AI to act when responding on WhatsApp. The platform provides a no-code chatbot builder where you can design conversation flows, including adding AI-generated responses in blocks.
- Campaigns via WhatsApp: Treble.ai shines for businesses that do a lot of engagement on WhatsApp. You can set up campaigns and chatbot interactions that nurture leads via WhatsApp and update HubSpot with the results.
In summary, treble.ai is the go-to choice if WhatsApp is an important channel for your business. It essentially lets you extend HubSpot’s reach into WhatsApp, complete with AI automation. SMBs that want to capture leads from WhatsApp or provide support there will find treble.ai extremely valuable. It saves your team from juggling separate WhatsApp apps and CRM – everything funnels into one place. Given WhatsApp’s massive user base, having an AI chatbot respond instantly on WhatsApp (and then log data to HubSpot) can significantly boost your responsiveness and conversion rates. Treble.ai stands out by catering specifically to this use case.
(You can start using treble.ai from the treble.ai homepage)
5. Aimdoc
Best for: booking sales calls with visitors
If your main goal is converting website visitors into sales meetings, Aimdoc is a tool worth considering. Aimdoc is essentially an AI SDR that chats with visitors, qualifies them as leads, and schedules calls or demos automatically. It integrates with CRMs like HubSpot to record those interactions and create contacts or deals. For B2B startups and SaaS companies looking to maximize conversion of inbound website traffic or save time of your sales team, Aimdoc can help.
What makes Aimdoc “best for booking sales calls”:
- 24/7 Lead Qualification: Aimdoc’s AI agent proactively engages visitors on your website (via a chat widget). It can ask questions to identify if the visitor is a potential customer – for example, “What are you looking for today?” or more specific product qualification questions. Based on the answers, it determines the lead’s quality or business needs.
- Automated Meeting Scheduling: The standout feature is that Aimdoc can book meetings for your sales team in real-time. It integrates with calendar systems (Google Calendar or Calendly). If the AI chat determines someone is a hot lead ready for a demo, it will offer available time slots and schedule a call for them – without any human intervention.
- Focus on Sales Use-Case: Aimdoc is specialized for sales engagement, unlike support chatbots. It’s designed to ask the right qualifying questions (almost like a live SDR would), handle objections or common queries, and collect key info before booking a meeting.
Overall, Aimdoc is the best choice if your priority is turning website traffic into qualified sales appointments. It essentially gives you a virtual SDR working 24/7 on your site. For SMBs with small sales teams, Aimdoc can capture and nurture leads that you might otherwise miss, and fill up your calendar with interested prospects. By the time your human sales rep talks to the lead, much of the initial qualification is already done by the AI.
(Aimdoc is a newer tool on the market; you can read user reviews or case studies on their site. One case study mentioned by Aimdoc is a company that saw a 1200% ROI after deploying the AI Sales Agent)
6. HubSpot Chatflow Builder (Rule-Based Chatbot)
Best for: manually defined chatflows
HubSpot provides its own Chatflow Builder – a tool to create chatbots using pre-defined rules and flows. This is not an AI solution, but rather a do-it-yourself chatbot builder included in HubSpot (even on the free tier). It’s essentially a logic tree where you script the bot’s behavior: you write the questions or options, and predetermine how the bot responds based on user input. If you prefer fully scripted responses for full control, the HubSpot chatflow builder is “best for manually defined chatflows.”
When to use HubSpot’s built-in chatbot builder:
- Partially available on Free/Starter: Anyone with a HubSpot account can use chatflows to make a basic chatbot. But it’s important to note that most rule-based functionality is restricted to higher tiers, such as if/then branching/routing etc. On HubSpot’s free or starter plans the rule-based chatbot is restricted to data-collection then passing on to live human chat (e.g. collecting name/email before talking to a human).
- Full scripting: The Chatflow tool lets you design exactly how the conversation should go. You use a visual editor to set up a tree of questions and responses. It’s like a flowchart you create using if/then logic and predefined options. This guarantees the bot says exactly what you want it to say, but means you do need to write out every question and answer you want it to be able to handle.
- Useful for simple FAQs & routing: If your needs are straightforward (such as a few common questions or you just want to collect contact info and then hand off to a human) the rule-based chatflow works well. Many small businesses use HubSpot’s free chatbot to, for instance, ask “What’s your email and question? We’ll get back to you” and create a ticket, or to guide users to knowledge base articles.
- Time and effort required: The downside is that building and maintaining these flows can be time-intensive. You have to anticipate what users might ask and craft the flows accordingly. If questions fall outside the scripted options, the bot might just say it can’t help or divert to a human. This approach doesn’t scale well for complex queries, because you’d have to manually add every possible Q&A. As your business grows or FAQs change, you’ll need to keep updating the flows. It’s essentially like writing an interactive decision tree. So, it’s best for very common or simple scenarios.
In conclusion, HubSpot’s rule-based Chatflow Builder is the best choice if you don’t want to use AI, and you have the time to set up a custom chatflow yourself. It leverages the standard HubSpot chat widget and can do things like lead capture, simple support answers, and triage. Just temper your expectations: it can’t understand free-form questions. Think of it as a clickable menu or form in chat format. For many very small businesses, that’s actually enough to improve response times and handle basic inquiries. And since it’s free, it’s a good starting point – you can always graduate to an AI chatbot later as your needs get more sophisticated.
(HubSpot provides templates in the Chatflow builder to help, and their knowledge base has a guide on creating a rule-based chatbot. You can start with this, and add in AI from HubSpot or a third-party specialist at a later date.)
7. Retell AI
Best for: automating phone calls
Finally, shifting from text chat to voice: Retell AI is an AI platform that focuses on voice agents – AI that can handle phone calls. Retell AI stands out as the best option for automating phone calls in a HubSpot context. If your business has a lot of phone inquiries or you want to do outbound call campaigns, Retell’s AI voice agent can save you time by taking care of those calls, while logging everything in HubSpot.
Here’s what Retell AI offers:
- AI Voice Agents for calls: Retell enables you to create an AI that talks to people over the phone (or any voice interface). This can be used for inbound calls (e.g. an AI receptionist that answers common questions or directs the caller) and outbound calls (e.g. an AI can call leads to follow up or gather information). The voice is natural-sounding and can engage in dialogue, much like a chatbot but with spoken words.
- HubSpot CRM Integration: Retell AI integrates with HubSpot via API to sync data from calls into your CRM. It can update contact records, create new leads from phone calls, log call transcripts or outcomes, and even trigger HubSpot workflows based on the call results.
- Customizable workflows and actions: Retell AI is a developer-friendly platform. You can program the voice agent with specific prompts and integrate it with various systems. The HubSpot developer community have published a tutorial on implementing a voice AI agent on a HubSpot website using Retell AI.
If you’re using phone calls in your business, Retell AI is the top pick for you. Retell can automate outbound call campaigns and handle inbound calls to free up your agents for complex cases. And with the HubSpot integration, all the data flows into your CRM.
(You can check out Retell’s website for examples, or the HubSpot Developers Blog which features an article on building a voice AI agent with Retell.)
Conclusion: Which HubSpot AI Chatbot is Best for You?
Choosing the “best AI chatbot for HubSpot” ultimately comes down to your business’s specific needs and which trade-offs you’re willing to make. We’ve seen that each of these 7 options has a niche where it excels:
- Native HubSpot AI (Breeze Customer Agent) is convenient for those already on Enterprise plans, but it’s costly and inflexible for others.
- Specialized tools like QuickBlox or Retell AI serve unique industries (healthcare, voice calls) with features that general solutions lack, though they may be overkill if you don’t need those compliance or voice capabilities.
- Channel-specific solutions like treble.ai shine if your audience lives on WhatsApp, but are less relevant if you don’t use that channel.
- Lead-focused AI like Aimdoc can supercharge sales conversions but might not handle support queries – so it’s important to match the tool to the primary use-case.
- And if budget is zero or you want manually define the conversation, HubSpot’s built-in rule-based chatbot is always an option, albeit a manual one.
For most small and mid-sized businesses, the priority is a chatbot that can reliably answer customer questions, work with their existing HubSpot setup, and be cost effective. This is exactly where Resolve247 stands out as the top choice for SMBs using HubSpot. Resolve247 combines the broad availability and ease-of-use of a HubSpot integration (works on any plan, one-click connect) with the sophistication of a dedicated AI chatbot service (custom instructions, advanced AI checks, human handoff). Crucially, it does so at a fraction of the cost of other solutions – delivering answers for pennies rather than dollars. SMBs have reported that switching to an alternative like Resolve247 saved them over 90% of their chatbot costs while actually improving answer quality and control.
Each tool on this list can add AI superpowers to your HubSpot in one way or another. But if you’re looking for the best overall HubSpot AI chatbot for 2025, especially to serve your customers around the clock without huge expense, Resolve247 is highly recommended. It’s a balanced solution that covers all the bases (support accuracy, customization, cost, multi-plan support, and hands-on help).
Ready to bring an AI chatbot into your HubSpot workflow? You can find out more or get started with Resolve247 – with a free 30-day trial (no credit card required) you can see the results for yourself. Whichever AI tool suits your needs, investing in the right AI chatbot can elevate your customer experience and free up your team, all while keeping everything integrated in HubSpot!
