AI tools for developer tools

Vocode is an open-source toolkit for building voice-based AI agents.

Developers building real-time communication features into apps get a complete solution that handles voice, video, chat, and live streaming through APIs and SDKs

Fixie

Hume EVI, the Empathic Voice Interface, is a voice AI API for building agents that pick up on how a person sounds as well as what they say.

Piper is a fast, local neural text-to-speech engine that converts text into spoken audio on your own hardware, with no cloud service involved.

Deepgram is a voice AI platform that exposes speech-to-text, text-to-speech and conversational agents through APIs.

The OpenAI Realtime API is a developer interface for building voice agents that listen and speak in real time.

Pipecat is an open-source Python framework for building voice and multimodal AI agents that talk in real time.

ElevenLabs API is a developer interface to the company's audio models.

Vapi is a developer platform for building, testing and deploying voice AI agents that talk to customers on the phone.

LiveKit Agents is an open source framework and cloud platform for building voice, video and physical AI agents and running them in production.

Cartesia is a voice AI company that provides one API for speech generation, transcription and production voice agents fast enough for live conversation.

Rime is a text-to-speech provider whose voice models are made for real-time conversations.

Kokoro is an open-weight text-to-speech model with 82 million parameters.

OpenVoice is an open-source instant voice cloning model created by researchers at MIT and Tsinghua University together with MyShell.

OpenAI Whisper API is the speech-to-text service developers call to convert recorded audio into text.

Amazon Lex is a managed AWS service for adding conversational interfaces to applications through voice and text.

Soniox is a speech AI platform that offers real-time speech-to-text, text-to-speech and speech translation through one API.

Google Cloud Text-to-Speech is an API that turns written text into natural-sounding speech using Google's AI speech synthesis research.

Amazon Polly is a fully managed Amazon Web Services product that converts text into spoken audio on demand.

OpenAI TTS is the text-to-speech feature of the OpenAI Audio API, exposed through a speech endpoint that converts written text into lifelike spoken audio.

Microsoft Azure AI Speech, now branded Azure Speech in Foundry Tools, is a cloud service for adding voice to applications and agents.

The Deepgram Voice Agent API is one real-time API that combines speech recognition, language model orchestration and speech synthesis, so developers do not have to stitch separate services together.

Google Cloud Speech-to-Text is a speech recognition API that turns audio into written text.