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.
Note-taking and organization platform with AI-assisted search and tools for managing documents and personal kn...
Freemium
Free plan API
AI software-development platform with coding agents that can work through implementation, review, and maintena...
Paid
API
Faraday provides conversational AI assistance for users who want interactive answers, follow-ups and task-focu...
Freemium
Free plan API
Education platform for building guided AI learning experiences around teacher-defined lessons and objectives.
Freemium
Free plan API
Forethought Solve provides conversational AI assistance for users who want interactive answers, follow-ups and...
Freemium
Free plan API
GitHub Codespaces helps developers cloud development environments with reproducible tooling and ai coding inte...
Paid
API Open source
Gmelius AI provides conversational AI assistance for users who want interactive answers, follow-ups and task-f...
Freemium
Free plan API
Go helps developers compiled programming language used for cloud services, networking, infrastructure, and dev...
Free
Free plan API Open source
Google Vertex AI Agent Builder provides conversational AI assistance for users who want interactive answers, f...
Freemium
Free plan API
Heptabase provides conversational AI assistance for users who want interactive answers, follow-ups and task-fo...
Freemium
Free plan API
HeyGen provides AI avatar and presenter videos for creators, marketers, educators, and teams making practical...
Freemium
API
HIX.AI provides conversational AI assistance for users who want interactive answers, follow-ups and task-focus...
Freemium
Free plan API
IBM watsonx Speech services provides enterprise speech for creators, businesses, educators, and developers who...
Paid
API
Insomnia helps developers api client for designing, debugging, and testing apis with developer-focused workflo...
Free
Free plan API
Kindroid provides conversational AI assistance for users who want interactive answers, follow-ups and task-foc...
Freemium
Free plan API
Kore.ai provides conversational AI assistance for users who want interactive answers, follow-ups and task-focu...
Freemium
Free plan API
Krisp provides noise cancellation for creators, businesses, educators, and developers who need practical audio...
Freemium
Free plan API
LALAL.AI provides stem separation for creators, businesses, educators, and developers who need practical audio...
Freemium
Free plan API
LM-Kit provides conversational AI assistance for users who want interactive answers, follow-ups and task-focus...
Freemium
Free plan API
LocalStack helps developers local aws cloud emulator for developing and testing cloud applications without usi...
Freemium
Free plan API Open source
Magical AI provides conversational AI assistance for users who want interactive answers, follow-ups and task-f...
Freemium
Free plan API
Magicoder provides AI-assisted capabilities for software development.
Freemium
Free plan API Open source
Metabase helps developers open-source analytics and business intelligence platform with natural-language and q...
Free
Free plan API
Microsoft Azure AI Speech provides speech services for creators, businesses, educators, and developers who nee...
Paid
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.
