9 of the 15 AI support agents we list have a public API, confirmed on their own website. Here they are side by side.
Listed alphabetically. A tool is ranked by its reviews once it has 3.
| Tool | Reviews | Lowest paid plan | Free plan | Free trial | Public API | Runs on | Main features |
|---|---|---|---|---|---|---|---|
| ReviewsNone yetWrite one for Ada | Lowest paid planNot confirmed | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | Main features
| |
| ChatbaseBuild, deploy, and optimize conversational agents across chat, email, and voice. | ReviewsNone yetWrite one for Chatbase | Lowest paid plan$120per month, billed yearlyBasic, as of November 13, 2026 | Free planNot confirmed | Free trial7 days | Public APIYes | Runs onWeb, Slack, WhatsApp | Main features
|
DecagonBuild, optimize, and scale AI agents that treat every customer like the only one. | ReviewsNone yetWrite one for Decagon | Lowest paid planNot confirmed | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | Main features
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DocsBotDocsBot turns your knowledge base into AI agents. | ReviewsNone yetWrite one for DocsBot | Lowest paid plan$49per monthPersonal, as of November 14, 2026 | Free planYes | Free trialYes | Public APIYes | Runs onNot confirmed | Main features
|
FinA customer agent that works across the entire customer journey, from service to sales. | ReviewsNone yetWrite one for Fin | Lowest paid plan$0.99Fin AI Agent, as of November 14, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | Runs onNot confirmed | Main features
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ForethoughtAI agents that resolve customer issues automatically to lower support costs. | ReviewsNone yetWrite one for Forethought | Lowest paid planNot confirmed | Free planNot confirmed | Free trialYes | Public APIYes | Runs onMobile, Slack | Main features
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| ReviewsNone yetWrite one for Intercom | Lowest paid plan$0.99per Fin outcome, no seats requiredFin AI Agent, as of October 20, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | Runs onWeb | Main features
| |
SiteGPTA personalized chatbot trained on your website content that instantly answers visitors' questions. | ReviewsNone yetWrite one for SiteGPT | Lowest paid plan$39per month billed yearlyStarter, as of November 14, 2026 | Free planNot confirmed | Free trial7 days | Public APIYes | Runs oniOS | Main features
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VoiceflowThe AI agent platform for building, launching and scaling chat and voice AI agents for customer support. | ReviewsNone yetWrite one for Voiceflow | Lowest paid planNot confirmed | Free planNot confirmed | Free trialYes | Public APIYes | Runs onNot confirmed | Main features
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From each tool's own website. “Not confirmed” means we couldn't confirm it there, not that the tool doesn't have it. Each tool's page says when its facts were checked.
A tool is listed here only when we've confirmed on its own website that it has a public API. Tools we couldn't confirm it for are left out, even if they may have it. Vendors can't pay for a place on this list. Add a tool we missed