Botpress is the strongest free option for technical founders; Tidio wins for non-technical teams that need live-chat fallback; HubSpot is the only pick that's fully free with no meaningful monthly cap. The catch that trips most startups: "free" on four of these five tools means monthly conversation or message limits that a moderately busy landing page will blow through inside a week.
Quick Picks (TL;DR)
- Best overall free tier: Tidio (live chat + AI hybrid)
- Best for conversational AI depth: Chatbase (GPT-powered, trained on your own docs)
- Best for no-code lead capture: Landbot
- Best for developer teams: Botpress
- Best truly unlimited free tier: HubSpot Chatbot (bundled with free CRM)
Comparison at a Glance
| Tool | Primary use case | Free plan limit | Paid starts at | Key differentiator |
|---|---|---|---|---|
| Tidio | Live chat + AI hybrid | 1 Lyro AI conversation/mo | ~$29/mo | Lyro AI deflects ~60% of FAQ volume |
| Chatbase | GPT trained on your docs | 1 bot, 20 message credits/day | ~$19/mo | Custom knowledge base from PDFs/URLs |
| Landbot | Lead capture, onboarding flows | 100 chats/mo | ~$45/mo | Visual drag-and-drop flow builder |
| Botpress | Developer-first, multi-turn bots | Generous (covers most small deployments) | ~$89/mo | Code extensibility + NLU intent engine |
| HubSpot Chatbot | CRM-integrated sales/support routing | Fully free (CRM bundle) | Free | Every chat logs to CRM automatically |
Tidio
Best for: Early-stage startups that want AI deflection but aren't ready to remove the human fallback
Tidio's free plan includes one Lyro AI conversation per month — genuinely low, but the platform's strength is the hybrid model: Lyro handles routine FAQs and hands off to a live agent when it can't resolve the query. Reported deflection rates for typical FAQ traffic run around 60%, meaning a well-configured bot can resolve the majority of incoming chats before a human ever touches them.
Setup takes under 10 minutes. Native plugins exist for Shopify and WordPress, and the visual flow editor requires no technical background.
Free tier ceiling: At one Lyro AI conversation per month, the free plan is effectively a trial. If your site generates more than a handful of support chats weekly, you'll hit the wall fast.
Pros: Fast setup, native Shopify/WordPress plugins, clean UI, hybrid AI + live chat routing.
Cons: Free Lyro limit is among the tightest on this list. No path to scaling on free — upgrading to paid is essentially required for any live deployment.
Skip Tidio if: You're fielding more than 50 chats per day and can't commit to a paid plan. Botpress's free tier covers that volume better.
Chatbase
Best for: Startups with existing documentation — help centers, onboarding guides, product FAQs
Chatbase ingests PDFs, URLs, or sitemaps and builds a GPT-powered assistant that answers questions specifically from your content. A bot seeded with a product help center will outperform a generic assistant on product-specific queries because it isn't guessing — it's retrieving from your actual documentation.
The free plan caps at one chatbot and 20 message credits per day. That rules out live deployment on any meaningful traffic, but it's enough for internal QA, a low-traffic support widget, or validating whether the knowledge base approach suits your use case before paying.
Pros: Strong knowledge grounding, clean conversation logs, multiple file format support, easy widget embedding.
Cons: 20 message credits per day makes live deployment on the free plan impractical. No live handoff to human agents — Chatbase is support-only, not a hybrid chat tool.
Skip Chatbase if: Your primary goal is lead generation or sales qualification rather than support. Its flow-based logic for converting visitors is weaker than Landbot's.
Landbot
Best for: Marketing-focused startups running lead capture, qualification flows, or product onboarding
Landbot's differentiator is the visual conversation flow editor — branching logic that looks like a flowchart but renders as a chat widget. A lead qualification sequence with conditional routing (budget, company size, use case) can be built in roughly 20 minutes without writing a line of code.
The free plan allows 100 chats per month and covers basic flows. For a startup testing a landing page or a new acquisition angle, 100 conversations is a usable sample.
Integrations on paid tiers extend to WhatsApp, Mailchimp, HubSpot, and Zapier. The free tier covers core web chat.
Pros: Strong visual editor, clean mobile-responsive widget, solid integration surface on paid tiers, fast to deploy.
Cons: Landbot is rule-based, not intelligently conversational. Users asking open-ended or unexpected questions will hit dead ends in the flow. Monthly chat cap applies to the free plan.
Skip Landbot if: You need a bot that handles unscripted, open-ended questions. For that, Chatbase or Botpress are the right tools.
Botpress
Best for: Technical founders who need multi-turn conversations, context memory, and code-level control
Botpress is the most capable free option on this list for complex startup deployments. The free cloud plan covers most small deployments without hitting a hard monthly cap. The platform combines a visual flow editor with the option to drop into JavaScript when you need custom logic — useful for pulling live data from your database, calling external APIs mid-conversation, or building dynamic response logic that a no-code tool can't replicate.
The NLU engine handles intent recognition reliably across multiple turns without requiring constant retraining. It's the only tool here that maintains genuine conversation context across a session rather than treating each message as isolated.
Setup time: Expect 2–3 hours before a first production bot is live — Botpress has a steeper onboarding curve than Tidio or HubSpot.
Pros: Generous free tier, code-extensible, multi-channel deployment (web, WhatsApp, Slack, and others), strong community documentation.
Cons: Not beginner-friendly. The learning curve is real, and the initial configuration overhead is higher than any other tool here.
Skip Botpress if: You're a non-technical founder who needs something running in 15 minutes. Tidio or HubSpot will get you there with less friction.
HubSpot Chatbot
Best for: Startups already running or planning to run HubSpot CRM for sales pipeline management
HubSpot's chatbot builder is completely free and the only option on this list with no meaningful monthly conversation cap. Every chat automatically creates or updates a contact record in the CRM, logs the conversation, and can trigger automated follow-up sequences. For a B2B SaaS team doing manual data entry between chat and CRM, the elimination of that step alone justifies picking HubSpot over a standalone chatbot.
The builder also supports meeting booking flows — a visitor can go from first message to booked demo call without leaving the chat widget.
Limitations to know: The chatbot logic is routing-based, not AI-driven. It directs users to the right resource or team member rather than generating intelligent responses. HubSpot branding appears on the free tier.
Pros: No conversation limits, full CRM integration, meeting booking, lead scoring, email follow-up automation — all free.
Cons: Chatbot logic is basic compared to Botpress or Landbot. Not the right tool if you need the bot to answer open-ended questions rather than route them.
Skip HubSpot if: You need sophisticated AI responses or you're not running a sales/CRM workflow. The tool's strengths are wasted outside that context.
How to Choose: A Decision Checklist
Work through these in order:
- What's the primary job? Support/FAQ resolution → Chatbase or Botpress. Lead capture → Landbot. CRM-integrated sales routing → HubSpot. Hybrid AI + human → Tidio.
- How technical is your team? Non-technical → Tidio, HubSpot, or Landbot. Comfortable with code → Botpress.
- What's your monthly chat volume? Under 100 chats/month → any free plan works. 100–500 → Botpress free tier or HubSpot. Over 500 → budget for a paid plan on whichever tool fits your use case.
- Do you need a human fallback? Yes → Tidio is the only hybrid option here. No → any of the others.
- Are you already in HubSpot? If yes, there's almost no reason not to start with HubSpot's free chatbot before evaluating others.
Common Mistakes
- Deploying Chatbase's free plan on a live product page. Twenty message credits per day runs out before noon on a moderately trafficked site. Use it for internal testing first.
- Choosing Botpress without a technical resource available. The 2–3 hour setup estimate assumes someone comfortable reading documentation and configuring integrations.
- Treating Landbot as a support tool. Its scripted logic breaks down fast when users go off-script. It's a lead capture and onboarding tool, not a support bot.
- Ignoring HubSpot because it "sounds enterprise." The free tier is genuinely free, with no conversation cap, and works for two-person teams as well as it works for larger ones.
FAQ
Do free AI chatbots actually handle customer support? For FAQs and predictable queries, yes. For complex, context-heavy issues — billing disputes, multi-step troubleshooting, anything requiring account data — they fall short. Build an escalation path to a human agent for anything the bot can't definitively resolve.
Can I run multiple chatbots on a free plan? Most free plans limit you to one bot. Botpress is more generous here; Chatbase's free tier also allows one. Check each tool's current plan page before committing — limits change.
Which tool integrates best with Slack or Notion? Botpress has the widest integration surface. For simpler Slack routing without custom logic, Tidio or HubSpot handle it adequately.
When should I upgrade from free? When you're hitting your monthly chat or message limit more than twice a week, or when the volume ceiling is causing the bot to go silent on users mid-session. Either signal means the free tier is actively costing you leads or support quality — at that point, the upgrade pays for itself.