These tools expose an API, so you can call them from your own code rather than working through their interface. This is the list to start from if you are building AI into a product, a script or an automation.
AI-supported coaching platform that analyzes classroom audio and teacher-student interaction patterns.
Paid
Free plan API
TextCortex helps writers turn prompt, existing text, documents, or knowledge sources into rewrites, summaries,...
Freemium
Free plan API
Tidio provides conversational AI assistance for users who want interactive answers, follow-ups and task-focuse...
Freemium
Free plan API
UiPath Agent Builder provides conversational AI assistance for users who want interactive answers, follow-ups...
Freemium
Free plan API
Ultimate provides conversational AI assistance for users who want interactive answers, follow-ups and task-foc...
Freemium
Free plan API
Unstructured provides conversational AI assistance for users who want interactive answers, follow-ups and task...
Freemium
Free plan API
Vectara Conversational AI provides conversational AI assistance for users who want interactive answers, follow...
Freemium
Free plan API
VEED provides browser-based AI video creation and editing for creators, marketers, educators, and teams making...
Freemium
API
Vonage AI provides conversational AI assistance for users who want interactive answers, follow-ups and task-fo...
Freemium
Free plan API
Zapier Agents provides conversational AI assistance for users who want interactive answers, follow-ups and tas...
Freemium
Free plan API
Zendesk AI Agents provides conversational AI assistance for users who want interactive answers, follow-ups and...
Freemium
Free plan API
Zoho Desk AI provides conversational AI assistance for users who want interactive answers, follow-ups and task...
Freemium
Free plan API
Akiflow AI provides conversational AI assistance for users who want interactive answers, follow-ups and task-f...
Freemium
Free plan API
Amazon Lex provides conversational AI assistance for users who want interactive answers, follow-ups and task-f...
Freemium
Free plan API
Amazon Q provides conversational AI assistance for users who want interactive answers, follow-ups and task-foc...
Freemium
Free plan API
BoostUp.ai provides conversational AI assistance for users who want interactive answers, follow-ups and task-f...
Freemium
Free plan API
Certainly provides conversational AI assistance for users who want interactive answers, follow-ups and task-fo...
Freemium
Free plan API
Chaport provides conversational AI assistance for users who want interactive answers, follow-ups and task-focu...
Freemium
Free plan API
Claygent provides conversational AI assistance for users who want interactive answers, follow-ups and task-foc...
Freemium
Free plan API
Crowdin supports localization platform for teams that need a practical business workflow. It is designed for f...
Freemium
Free plan API
Customers.ai provides conversational AI assistance for users who want interactive answers, follow-ups and task...
Freemium
Free plan API
CustomGPT.ai provides conversational AI assistance for users who want interactive answers, follow-ups and task...
Freemium
Free plan API
DBeaver helps developers database client for browsing, querying, and managing many database systems..
Freemium
Free plan API
Dialogflow CX provides conversational AI assistance for users who want interactive answers, follow-ups and tas...
Freemium
Free plan API
What to check before you choose
Having an API is the start of the question rather than the end of it. Rate limits, pricing per call, whether there is a sandbox to develop against, and whether your inputs are retained or used for training all vary enormously, and all of them shape whether a tool is viable at scale. Official API documentation is the only reliable source for those details, and it changes often — treat this list as a way to find the candidates, then verify the specifics with the vendor before you build.
