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Amazon Lex alternatives

Amazon Lex creates voice and chat interfaces for applications, with speech recognition, language understanding, visual bot design, and tools for generating and testing conversations. It can answer FAQs through authorized knowledge sources and Amazon Bedrock foundation models, and connect with AWS Lambda, Cognito, Polly, and Amazon Connect. Its deployment options span Android, iOS, web, APIs, and multiple channels. Common uses include self-service assistants, informational and transactional bots, and device-control bots.

  1. 1

    ChatbotX

    by ChatbotX
    Free plan Open source Self-hosted

    Self-hosted, open-source chatbot projects — ChatbotX adds open-source self-hosting with visual flows, AI bot generation, and knowledge-base answers.

    8.5 Free plan · paid from $29/mo · 14-day trial Visit site
  2. 2

    IBM watsonx Assistant

    by IBM watsonx Assistant
    Free plan APISelf-hostedWeb

    Teams seeking API or self-hosted customer assistants — IBM watsonx Assistant offers API and self-hosted platforms with visual flows, AI generation, knowledge answers, and human handoff.

    7.6 Free plan · 30-day trial Visit site
  3. 3

    Voiceflow

    by Voiceflow
    Free plan AndroidAPIiPhone+2

    Teams building visual, multichannel assistants — Voiceflow offers visual flows, AI generation, knowledge answers, and human handoff across Android, iOS, web, and API.

    7.7 Pricing on request Visit site
  4. 4

    Yellow.ai

    by Yellow.ai
    Free plan AndroidAPIExtension+2

    Web and mobile multichannel assistants — Yellow.ai combines web, iOS, and Android access with visual flows, AI generation, knowledge answers, and human handoff.

    7.7 Free plan Visit site
  5. 5

    Chatbase

    by Chatbase
    Free plan AndroidAPIiPhone+1

    Knowledge-answer chatbots without visual flow building — Chatbase offers knowledge-base answers and human handoff but no visual flow builder.

    7.6 Free plan · paid from $40/mo · 7-day trial Visit site
  6. 6

    Manychat

    by Manychat
    Free plan AndroidiPhoneWeb

    Teams wanting visual, multichannel bot building — Manychat offers visual flows, AI generation, knowledge answers, and human handoff on Android, iOS, and web.

    7.5 Free plan · 14-day trial Visit site
  7. 7

    AiSensy

    Free plan AndroidAPIiPhone+1

    WhatsApp marketing and customer engagement — AiSensy focuses on WhatsApp broadcasts, chatbots, AI agents, lead capture, and chatbot-to-human handoff.

    7.6 Free plan · paid from $45/mo · 14-day trial Visit site
  8. 8

    Rasa

    by Rasa
    Free plan Open source APILinuxMac+3
    9.3 Free plan · pricing on request Visit site
  9. 9

    Microsoft Bot Framework

    Free plan Open source AndroidAPIiPhone+5
    9.1 Free plan Visit site
  10. 10

    Guzli

    Free plan Open source APIExtensionWeb
    9.0 Visit site
  11. 11

    SOVA

    by SOVA
    Free plan Open source AndroidAPIiPhone+5
    8.9 Free plan Visit site
  12. 12

    Radioso

    by Radioso
    Free plan Open source APILinuxMac+3
    8.7 Open source Visit site
  13. 13

    Chat Data

    Free plan APISelf-hostedWeb
    7.5 Free plan · paid from $15.83/mo (annual) Visit site
  14. 14

    DocsBot AI

    by DocsBot AI
    Free plan APISelf-hostedWeb
    7.5 Free plan · paid from $49/mo Visit site
  15. 15

    FwdSlash

    Free plan AndroidAPIiPhone+1
    7.5 Free plan · paid from $20/mo Visit site
  16. 16

    AnyChat

    Free plan AndroidAPIiPhone+1
    7.5 Free plan · paid from $9/mo · 14-day trial Visit site
  17. 17

    UChat

    Free plan AndroidAPIiPhone+1
    7.5 Free plan · 14-day trial Visit site
  18. 18

    Specteron

    by Specteron
    Free plan AndroidAPIiPhone+3
    7.5 Free plan Visit site
  19. 19

    Desku AI Chatbot Builder

    by Desku AI Chatbot Builder
    Free plan AndroidAPIiPhone+1
    7.5 Free plan · paid from $39/mo · 14-day trial Visit site
  20. 20

    Gupshup

    by Gupshup
    Free plan APIWeb
    7.4 From $0.00 Visit site
  21. 21

    Wonderchat

    Free plan AndroidiPhoneWeb
    7.4 Free plan · paid from $124/mo (annual) · 7-day trial Visit site
  22. 22

    Typebot

    Free plan WebiPhoneAndroid
    7.4 Free plan · paid from $39/mo Visit site
  23. 23

    Tiledesk

    by Tiledesk
    Free plan WebiPhoneAndroid
    7.4 Free plan · paid from €124/mo (annual) · 14-day trial Visit site
  24. 24

    Quickchat AI

    by Quickchat AI
    Free plan APISelf-hostedWeb
    7.4 Free plan · paid from $9/mo Visit site

Teams may look elsewhere if they prefer a product not centered on AWS integrations, need a particular deployment model, or want a focused messaging platform. Lex uses pay-as-you-go request pricing, and Automated Chatbot Designer training costs $0.50 per minute; a free tier is available for six months after account creation. Some language features vary by locale. Compare each alternative’s platform access, channel coverage, knowledge answers, handoff, and pricing terms, then consider whether its specific strengths match the work your bot needs to do.

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