Best Free AI Chatbot Tools in 2026

7 Best Free AI Chatbot Builders (No Coding & Free Plans) Compare 7 options including Google Dialogflow, Chatbase, Botsonic.

Top Free AI Chatbot Tool Picks

#1. Google Dialogflow - Best for enterprise developers building complex, multi-platform conversational agents.

Pay-as-you-go (Free Starting Credits) No Credit Card Required 1,000 Text Requests / Month

What Is It?

Google Dialogflow is an advanced natural language understanding platform. It designs conversational user interfaces integrated into websites, apps, and IoT devices.

Free Tier Breakdown

What you get: Dialogflow ES (Standard Edition) offers a free tier allowing up to 1,000 text requests per month without requiring a credit card.

The catch: It is highly technical and requires development knowledge. It is not an 'out-of-the-box' AI bot you can train on a PDF in 5 minutes.
Pros
- Incredible natural language processing
- Integrates with Google Cloud ecosystem
- Omnichannel deployment
Cons
- Not user-friendly for non-coders
- CX version is expensive
Start Building with Dialogflow
#2. Chatbase - Best for small business owners wanting a custom GPT trained on their website data.

Freemium (Forever Free Plan) No Credit Card Required 30 Messages / Month

What Is It?

Chatbase allows you to build a custom ChatGPT bot by simply uploading a PDF or pasting a website link. You can then embed this bot directly onto your site.

Free Tier Breakdown

What you get: The free tier lets you create 1 chatbot trained on up to 400,000 characters and allows for 30 message credits per month.

The catch: 30 messages per month is incredibly low and only suitable for testing. The free bot also displays 'Powered by Chatbase' branding.
Pros
- Takes 2 minutes to set up
- Trains effortlessly on website URLs
- Great UI and easy embedding
Cons
- Free message limit is tiny
- Bot customization is locked behind paywall
Build a Bot on Chatbase
#3. Botsonic - Best for ecommerce sites and customer support teams needing a no-code AI widget.

Freemium (Forever Free Plan) No Credit Card Required 100 Messages / Month

What Is It?

Botsonic (by Writesonic) is a no-code AI chatbot builder that creates hyper-intelligent customer support bots capable of resolving user queries autonomously.

Free Tier Breakdown

What you get: The free plan includes 1 chatbot, training up to 1 million characters, and 100 messages per month, making it a solid testing ground.

The catch: The widget contains Writesonic branding, and advanced analytics or API access require upgrading to a paid plan.
Pros
- Generous 1 million character training limit
- Seamless integration with WhatsApp and websites
- Uses advanced GPT-4 models
Cons
- Widget customization is limited on free tier
- Can occasionally hallucinate answers
Create Your Botsonic Chatbot
#4. Dante AI - Best for creating voice-enabled chatbots and multimedia interactions.

Freemium (Forever Free Plan) No Credit Card Required 100 Messages / Month

What Is It?

Dante AI enables anyone to build custom AI chatbots trained on their data in minutes. Uniquely, Dante supports voice inputs and multimedia responses.

Free Tier Breakdown

What you get: The free plan grants 1 knowledge base, 1 chatbot, and 100 credits a month using GPT-3.5 models.

The catch: Advanced AI models (like GPT-4) and features like Zapier integration are completely restricted on the free tier.
Pros
- Supports voice-to-text chatting
- Can analyze videos and images
- Very clean, modern user interface
Cons
- Free plan locked to older AI models
- Strict file upload limits
Try Dante AI for Free
#5. CustomGPT - Best for B2B companies demanding highly secure, zero-hallucination bot deployments.

7-Day Trial (Credit Card Required) Credit Card Required Unlimited Usage (Trial)

What Is It?

CustomGPT is a premium enterprise-grade AI builder focusing on 'anti-hallucination' technology. It ensures the AI only answers strictly based on your uploaded documents.

Free Tier Breakdown

What you get: They offer a 7-day trial of their Standard plan which allows you to ingest millions of words and test the bot's accuracy.

The catch: You must supply payment details upfront, and there is no forever free plan. It is aimed at businesses with budgets.
Pros
- Class-leading anti-hallucination limits
- Massive data ingestion limits
- Highly secure and privacy-focused
Cons
- No forever free tier available
- Premium pricing compared to competitors
Start Your CustomGPT Trial
#6. Tidio - Best for Shopify merchants combining AI bots with human live chat capabilities.

Freemium (Forever Free Plan) No Credit Card Required 50 AI Conversations / Month

What Is It?

Tidio bridges the gap between AI chatbots and human live chat. Their AI, Lyro, handles basic FAQs, and seamlessly routes complex tickets to human agents.

Free Tier Breakdown

What you get: The free plan gives you access to basic live chat for 50 users and 50 Lyro AI automated conversations every month.

The catch: To fully unlock the AI support capabilities and handle higher traffic volumes, a paid plan is strictly necessary.
Pros
- Perfect handover from AI to human
- Deep integrations with Shopify and WordPress
- Excellent built-in ticketing system
Cons
- AI limits are very low on the free plan
- Dashboard can feel busy with multiple features
Add Tidio to Your Website
#7. LiveChat - Best for large sales teams wanting structured live chat with automated routing.

14-Day Trial (Credit Card Required) No Credit Card Required Full Platform Access for 14 Days

What Is It?

LiveChat is a robust customer service platform. While primarily human-agent focused, it features deep bot integrations and AI assistance for typing and summaries.

Free Tier Breakdown

What you get: You get a fully unlocked 14-day free trial to test out ticketing, chatbot integrations, and omnichannel messaging.

The catch: There is no forever free plan. Once the trial is up, you must pay per agent seat, which scales quickly.
Pros
- Industry-standard reliability and speed
- Hundreds of CRM integrations
- Great analytics and reporting dashboards
Cons
- No free tier
- AI features require third-party bot connections
Start Your LiveChat Trial