Thinkstack AI

Thinkstack AI trains chatbots on your own content. It is a no-code AI chatbot builder for customer service, lead generation and sales, and you can start on a free plan with one chatbot, 50 message credits, 500,000 characters and unlimited documents.

That tier is small, so expect to outgrow it if you get real traffic.

Paid plans start with Basic at $16 a month, which gives you 3,000 monthly message credits, 12,000,000 characters and 500 links a month for one user.

Pro costs $90 a month and covers 5 chatbots, 15,000 message credits,

3 users, human handoff, AI actions and intent, plus WhatsApp and Slack integration.

Ultra is $299 a month for 10 chatbots,

5 users and 25,000,000 characters per bot.

Message credits are unlimited after the first 30K if you bring your own OpenAI key.

Ultra also removes the Powered by Thinkstack label and adds a dedicated customer success manager and help with customization.