Hume AI
Freemium
Emotionally aware voice AI with an empathic speech interface for apps and agents.
API AI tools
AI tools tagged API, newest first.
52 tools
Vapi
Paid
A developer platform for building voice AI agents that make and answer phone calls.
Loudly
Freemium
An AI music platform with a generator, a royalty-free library and an API.
Mubert
Freemium
Generates endless royalty-free music streams and tracks for content, apps and brands.
Speechmatics
Freemium
Enterprise speech recognition with strong accent and language coverage.
Deepgram
Freemium
Fast speech recognition and voice agent APIs built for real-time applications.
AssemblyAI
Freemium
Speech to text APIs with speaker labels, summaries and audio intelligence features.
Rev
Freemium
Transcription, captions and subtitles, with both AI and human-verified options.
Resemble AI
Paid
Voice cloning and text to speech with built-in deepfake detection for enterprises.
Cartesia
Freemium
Ultra-fast, realistic voice AI built for real-time conversational agents.
Google's API for natural-sounding speech in many languages, including its newest voice models.
Amazon Polly
Paid
AWS's text to speech service that turns text into lifelike speech for apps.
