Facebook 聊天機器人建構器免費：8 個平台讓你在 2026 年無需付費即可建構

Search for a free Facebook chatbot builder in 2026 and you run into the same problem over and over: half the listicles are comparing real free plans, the other half are sneaking in trials, and a few are still recommending products that barely resemble their old Messenger tools anymore.

I went through the current public pricing pages, help docs, and plan notes for the eight names people still compare most often for Facebook Messenger automation: MessengerBot, ManyChat, Chatfuel, MobileMonkey, Botsify, Landbot, Tidio, and SendPulse. Then I ranked them by one standard that matters more than the marketing headline: how much useful Facebook bot setup you can actually do before the paywall changes your decisions.

That distinction matters. A platform can be excellent software and still be a weak answer to “free Facebook chatbot builder.” Another can offer a forever-free tier that looks generous until you realize Messenger itself is locked behind a paid plan. A third can be technically free, but so capped that it only works as a sandbox.

Pricing and free-plan details below reflect public vendor pages reviewed on April 10, 2026. I am using USD throughout because that is the clearest common pricing reference across the US and UK market.

What “Free” Actually Means in Chatbot Builders in 2026

這個詞 免費 hides at least four different offers in this market.

Free forever with real Messenger use 是最佳情況。這意味著您可以連接 Facebook 頁面，建立機器人，並在保持聯絡、消息或自動化限制內無限運行。在這個比較中，ManyChat 和 SendPulse 最接近這一定義。.

永遠免費，但對 Messenger 來說並不完全是 是第二類別。Landbot 和 Tidio 都提供真正的免費入門點，但免費體驗更適合用於沙盒測試、網站聊天或學習建構者，而不適合運行一個認真的 Facebook 頁面機器人。.

免費試用或起始配額 是第三類別。Chatfuel、MessengerBot 和 Botsify 都允許您在不提前付款的情況下測試平台，但這與永遠免費的運營層級並不相同。Chatfuel 當前的 Facebook 頁面推廣免費試用和小額免費對話配額。MessengerBot 公開宣傳免費試用註冊，但定價頁面本身是從付費計劃開始的。Botsify 也依賴於試用訪問，然後才是其付費建構者計劃。.

舊版免費計劃，當前產品不匹配 是第四類別。MobileMonkey 是最佳範例。舊的幫助文檔仍然提到免費計劃和消息發送限制，但當前的實時品牌是 Customers.ai，且其公開定價現在集中在身份解析上，而不是人們記得的經典低成本 Messenger 建構者。.

還有一件大多數總結忽略的事情：這裡沒有任何認真的選擇是真正的 無需註冊. That phrase works for consumer AI chat apps. It does not work for Facebook chatbot builders because the platform needs account-level permissions, your Page connection, saved flows, subscriber storage, and a place to manage handoff rules.

The practical takeaway is simple. Do not ask only, “Does it have a $0 plan?” Ask, “Can I connect my Facebook Page, build a useful conversation, and keep it live for more than a weekend without upgrading?” That question produces a much shorter shortlist.

The 8 Free Facebook Chatbot Builders Ranked

I ranked these platforms by blended value at $0: actual Messenger usefulness first, upgrade pressure second, and long-term sanity third. If a tool is technically free but forces you into a paid plan before you can do meaningful Facebook work, it drops. If a tool is not free forever but has a strong no-cost test path and a sensible Messenger upgrade, it stays in the conversation.

Important note: ManyChat is the messiest listing to compare because its public pricing pages and help docs are not perfectly aligned right now. The updated March 2026 help docs describe a new pricing model for accounts created on or after March 2, 2026, while some public pricing pages still show legacy 1,000-contact free messaging. If ManyChat is your top choice, check the actual pricing shown inside your account and region before you commit.

ManyChat Is Still the Best Real Free Starting Point for Messenger

ManyChat takes the top spot because it remains the easiest serious answer to the exact question people are asking: “I want a Facebook Messenger bot builder I can actually start using for free.” The current March 2026 help docs for new-model accounts describe a $0 plan with up to 25 Active Contacts per month, 1 user, 1 inbox seat, up to 2 channels, and up to 4 live automations. That is a much smaller free tier than the older 1,000-contact language still floating around on some public pricing pages, but it is still a real forever-free entry point.

The important part is not the raw number. It is the fit. ManyChat still feels like a platform designed by people who understand what Messenger and social DMs are used for in the real world: comment triggers, simple lead magnets, welcome flows, FAQ replies, and lightweight sales qualification. If your business page gets modest traffic, 25 active contacts is enough to prove whether people will engage with your flow at all.

The catch is obvious. You will outgrow the free plan quickly if a post performs well, an ad starts converting, or you want more than a handful of automations live at once. Still, if you want the cleanest no-cost path into actual Messenger automation, ManyChat is where most people should start. And if the new caps feel too tight, this guide to ManyChat 替代品 is the next smart comparison.

SendPulse Gives You the Most Real Room Before the Paywall

SendPulse is the best value pick if you care more about raw free capacity than the smoothest Messenger-first interface. Its current chatbot pricing shows a real free plan with up to 500 subscribers, 10,000 messages per month, and up to 3 chatbots. That is a lot more breathing room than ManyChat’s new 25 Active Contacts model for a small business that wants to test FAQs, lead capture, order updates, or simple promo flows without hitting a wall immediately.

The tradeoff is that SendPulse feels broader and slightly more utilitarian. It is trying to be an automation platform with email, CRM, and multichannel messaging layers, not just the slickest Facebook DM growth tool. That can be a strength if you want everything in one stack, but it also means the product feels less Messenger-native than ManyChat when you are building fast social automations.

If you want the most useful forever-free tier for a budget-conscious business page, SendPulse deserves a serious look. It is especially strong when your goal is “let me run a bot on Facebook without paying this month,” not “let me optimize every comment-to-DM funnel.” For pure no-cost runway, it is hard to beat in this list.

Chatfuel Is Good for Fast Facebook Tests, Not for Staying Free

Chatfuel still belongs in this roundup because its current Facebook automation page advertises that you can automate the first 50 conversations for free and then move into a free trial. Its public pricing also starts relatively clearly, with business plans from $23.99 per month and 1,000 conversations included before overage pricing. That makes Chatfuel more transparent than a lot of builders that bury usage math.

For a short proof-of-concept, Chatfuel is solid. You can set up a Facebook Page FAQ bot, test lead capture, connect an offer flow, and see whether your audience even wants to interact with the bot before you spend real money. That is useful. What it is not is a forever-free business setup you can just leave running indefinitely.

In other words, Chatfuel is free enough to validate. It is not free enough to ignore budgeting. If your main goal is to test one campaign or one support use case, it stays near the top. If your main goal is to avoid paying for months, it drops behind ManyChat and SendPulse.

Landbot Has the Best Sandbox, but Messenger Starts on Paid

Landbot is one of the easiest products to like when you are actually inside the builder. Its free forever Sandbox plan includes 100 chats per month, 1 seat, basic flow operations, limited integrations, and enough tooling to learn how your bot should behave. For prototyping, it is excellent.

The problem is simple and important: the real Facebook Messenger tier starts on paid Starter. Landbot’s USD pricing page shows Starter at $45 per month, or $36 per month billed annually, for web and Messenger chats. So while Landbot absolutely lets you build without paying, it does not really let you run a Messenger bot live on a forever-free plan the way a searcher probably expects.

That makes Landbot a smart choice for two types of readers. First, people who want to map and test a conversation flow before choosing a production platform. Second, teams that care a lot about builder experience and are open to paying once the structure feels right. For strict free-Messenger use, it sits below the top three.

MessengerBot Is a Better Upgrade Path Than a Better Free Plan

MessengerBot belongs in this ranking because it is directly relevant to Facebook Messenger automation, not because it offers the most generous forever-free tier. The public site currently shows a free-trial sign-up flow, while the pricing page itself starts on paid plans, with promotional pricing from $19.99 per 30 days for Premium. That Premium tier includes 1 Facebook account, 5 pages, unlimited subscribers, unlimited bulk messages, unlimited sequence messaging, and 1 chat widget and ecommerce store.

That combination tells you what MessengerBot is really optimized for. It is not trying to win the forever-free headline. It is trying to convert you from a test into an actual Messenger operating setup with broadcast tools, flow building, and Facebook-specific growth features that matter once the bot stops being a hobby.

If you only care about not paying for as long as possible, MessengerBot is not your first stop. If you care about what happens after the first successful campaign, it becomes more interesting. That is why I would not rank it above ManyChat or SendPulse for free use, but I would rank it above several “free” tools that stop making sense the moment you want Messenger to drive real business outcomes.

Tidio Works Better as a Support Stack Than a Free Facebook Builder

Tidio does have a real free forever baseline. Its help docs describe a free basic version, and its pricing page states that your first 50 Lyro AI Agent conversations are free for life and your first 100 visitors reached via Flows are free. That is useful if you are experimenting with support automation or AI-assisted responses.

Where people get confused is channel fit. Tidio is a strong support and live-chat platform. It is not the first product I would recommend to someone who specifically wants the best free Facebook Messenger bot builder for a business page. It makes more sense when your website inbox, help desk, and multichannel support view matter as much as Messenger itself.

So yes, Tidio deserves a place here because it can be part of a Messenger-adjacent setup and it does offer meaningful free access. But if Facebook is the main channel, its free plan is usually a detour rather than the cleanest route.

Botsify Gives You a Trial and a Broad Channel List, Not a Cheap Forever Plan

Botsify’s current pricing positions it more as an AI-agent builder than a classic Messenger-first no-code bot tool. The self-serve builder plan starts at $49 per month and includes 2 AI agents, 6,000 credits, documents and web-search integrations, scheduling, and deployment to channels such as Messenger, SMS, website, WhatsApp, Instagram, Telegram, and Slack. The free piece is the trial, not an ongoing forever-free usage tier.

That makes Botsify easy to categorize. It is useful if you are agency-minded, want omnichannel experimentation, or like the newer “agent” framing more than traditional flow builders. It is not the strongest answer for a small business owner who typed “facebook chatbot builder free” because they want to run a practical page bot without a monthly bill.

In other words, Botsify is not bad software. It is just a mismatch for the strictest version of this keyword. There is a difference between “lets me try it without paying” and “lets me operate it without paying,” and Botsify sits in the first bucket.

MobileMonkey Is a Legacy Search Term More Than a Fresh Recommendation

MobileMonkey is still searched heavily enough that ignoring it would make this roundup less useful. But readers deserve the blunt version: if you are expecting the old MobileMonkey free Messenger builder from years ago, that is not really the current story anymore.

Legacy help docs under the old MobileMonkey setup still mention a free plan with a 1,000-message send limit. But the current public Customers.ai pricing is centered on identity resolution, with a 7-day free trial and paid plans starting around $600 per month. That is a radically different buying decision from “free Facebook chatbot builder.”

If you already run an old MobileMonkey setup, those legacy docs may still matter. If you are starting fresh in 2026, I would not treat MobileMonkey as a serious free-plan recommendation. It belongs in the list because people still compare it. It ranks last because the current product-market reality no longer matches the old free-plan expectation.

Feature Comparison: What Each Free Tier Gives You

This is the table I wish more free-plan roundups would publish. It answers the three questions that usually matter first: do you get real Messenger access, how much can you do before paying, and what wall you hit first.

The biggest pattern in that table is not pricing. It is fit. Only a few platforms are truly trying to serve the “free Facebook Page bot” use case directly. Many others either let you test the builder without paying or give you a website-first free plan that becomes Messenger-capable only after you upgrade.

How to Build Your First Free Facebook Chatbot in 15 Minutes

If you want the fastest real-world path, use ManyChat or SendPulse for the first build. They give you actual no-pay Messenger runway instead of a pure sandbox. Keep the first version boring on purpose. Boring bots usually outperform clever ones because they get to the answer faster.

1. Choose one job for the bot. Pick FAQs, lead capture, booking requests, or after-hours replies. If you try to make the bot do support, sales, qualification, and promotions on day one, you will waste your free limit on a messy draft.
2. Connect your Facebook Page and grant full permissions. Most setup failures come from incomplete permissions, not bad copy. If the platform cannot see the page properly, nothing downstream will behave consistently.
3. Start from a template, not a blank canvas. Templates are not just for beginners. They prevent you from forgetting basics like fallback responses, welcome flows, or reply buttons.
4. Build one menu with three choices. A strong free-plan starter menu is usually “Get a quote,” “Ask a question,” and “Business hours.” That covers most business-page traffic without building ten branches you do not need yet.
5. Write a fallback that sounds human. Something like, “I can help with pricing, opening hours, and booking. If you need a person, leave your question and we will reply shortly.” That one message saves a lot of bad bot experiences.
6. Add one conversion step. Ask for an email, phone number, booking preference, or product interest. If the bot never captures intent, it is just decorative automation.
7. Test on mobile from a real Facebook user account. Messenger flows often look fine in a builder preview and awkward on an actual phone. Tap everything yourself.
8. Watch your limits for a week before rebuilding anything. The first version should teach you where users click and where the free tier pinches. That data matters more than adding extra branches immediately.

If you want the wider walkthrough on building a chatbot without coding, read that next. It is the better companion piece once you have chosen a platform and need the practical setup flow, not just the pricing comparison.

Free Tier Limits You’ll Hit First

Most people assume message volume is the first thing that breaks a free chatbot plan. Sometimes it is, but more often the first limit is something less obvious.

Contact caps usually hurt before message caps. ManyChat’s newer free-plan model is the clearest example. You might not send many messages, but if a small burst of people interact with the bot during the billing cycle, the active-contact ceiling can show up fast.

Automation count is the next invisible wall. A free plan that allows only a few live automations can feel fine while you are building, then suddenly cramped once you add welcome flows, FAQ replies, comment triggers, and a lead magnet.

AI allowances are usually tiny. Tidio’s first 50 AI conversations free for life sounds nice until you realize a few real customer sessions can burn through that quickly. Trial-driven AI builders have the same problem. They are generous enough to impress you, not generous enough to replace budgeting.

Team access becomes a problem sooner than most businesses expect. One user and one inbox seat sounds fine when you are setting up alone. It becomes annoying the moment a colleague wants to monitor or jump into live conversations.

Branding and channel restrictions matter more than they look on the pricing page. A “Powered by” label or missing SMS, WhatsApp, or email support might not matter for testing. It matters once the bot becomes customer-facing and part of a real campaign.

Legacy pricing pages can waste your time. ManyChat and MobileMonkey both show why. If you read an old comparison or a cached pricing page without checking the newest help docs, you can design your whole build around a limit that no longer exists.

When to Upgrade From Free to Paid

The right time to upgrade is not “when the vendor annoys you.” It is when the free plan starts changing how you run the business.

Upgrade when your bot starts generating leads every week and you are actively avoiding extra contacts because you do not want to trip the cap. Upgrade when more than one person needs inbox access. Upgrade when you want sequences, better analytics, AI replies at meaningful volume, or cleaner integrations into your CRM or sheets.

For most small businesses, the free plan is best used as a validation layer. Prove that customers will message you. Prove that your FAQ flow reduces repetitive replies. Prove that at least one conversion path works. Once that happens, the smartest move is often to stop optimizing around a $0 constraint and choose the platform you can live with for the next year.

Completely Free Forever vs Free Trial Only

This is the cleanest way to think about the eight platforms after all the pricing-page noise.

If your non-negotiable requirement is free forever on actual Facebook Messenger, the list gets much shorter very quickly. ManyChat and SendPulse are the two strongest answers. Everything else requires more compromise, more nuance, or a faster jump to paid.

Common Free Chatbot Builder Mistakes

The easiest way to waste a free plan is to build like you already have a paid one. These are the mistakes I see most often.

• Choosing by headline instead of channel access: “Free forever” sounds great until you notice the free tier is website-only and Messenger starts on paid.
• Building too many branches in week one: On a capped plan, every extra automation should earn its place. Start with one menu, one fallback, and one conversion path.
• Ignoring how contacts are counted: Contact-based billing and contact-based limits are not the same as follower counts, and that mistake creates surprise paywalls.
• Skipping human handoff: A free bot that cannot gracefully hand off or collect a follow-up question creates a worse customer experience than no bot at all.
• Trusting old tutorials without checking current pricing: MobileMonkey is the classic trap here, and ManyChat’s 2026 pricing shift makes this even more important.
• Using the wrong tool for the real job: Tidio is great when the job is support inbox management. ManyChat is better when the job is Messenger growth automation. Free comparisons fail when those jobs get mixed together.

If you are still deciding between a Messenger-first builder and a broader support or website chatbot tool, go back to the use case, not the feature count. That sounds obvious, but it is the one habit that keeps free plans useful instead of frustrating.

If your main problem is setup rather than pricing, go back to building a chatbot without coding before you switch platforms. A surprising number of “free plan” complaints are really first-build mistakes.