Best AI tools for customer support chatbots

Three AI tools for website and in-app support bots, two with a free plan. Chatbase builds AI agents for customer experience across chat, email and voice. Brevo sends email and SMS campaigns and manages customer records, while Klaviyo combines customer data with email, SMS and other marketing channels.

The ranked list

  1. 1

    Chatbase

    Builds AI agents for customer care

    Customer support chatbotsAPI

    Free trial

    Builds and deploys AI agents for customer experience across chat, email and voice, plus WhatsApp and Slack. Voice agents and the helpdesk inbox need the Standard plan or higher. A free trial is offered.

  2. 2

    Brevoalso does this

    Runs email and sms marketing

    Email marketingAPI

    Free plan

    Mainly an email and SMS marketing platform, with customer support chatbots listed as a secondary use. Includes live chat and Aura AI agents that handle support among other tasks. A free plan is available.

  3. 3

    Klaviyoalso does this

    Automates email and sms marketing

    Email marketingAPIPlugin or MCP

    Free plan

    Primary job is email marketing, with a 24/7 customer service agent that answers questions on its own as a secondary use. Has a free plan and works with 350+ pre-built integrations.

List updated 17 Oct 2026