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Speech & Transcription

Speech-to-text and transcription models and APIs, open and hosted, for agents that need to listen.

JSON: /api/v1/directory.json (filter on category=speech-transcription)

OpenAI Whisper

Open-source speech recognition model that can also translate speech from many languages into English. Run it locally for free, or use the paid hosted audio API.

Soniox

Speech platform with real-time speech-to-text that can also return live translation, one-way or two-way, across 60+ languages. Usage-based pricing.

Speechmatics

Speech recognition API with translation of transcripts into other languages, for batch and real-time audio. Has a free tier, then usage-based pricing.

Free tierAPI key

Google Cloud Speech-to-Text

Accurate voice typing and transcription powered by Gemini. Convert speech to text in 125+ languages with state-of-the-art AI accuracy.

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Microsoft Azure Speech Service

Explore Azure Speech in Foundry Tools(formerly AI Speech) for voice recognition and text to speech. Build multilingual AI apps with customized speech models.

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Amazon Transcribe

Amazon Transcribe is an automatic speech recognition (ASR) service that makes it easy for developers to add speech to text capability to their applications

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IBM Watson Speech to Text

IBM Watson Speech to Text converts audio into accurate text, enabling real-time transcription, captions and insights with scalable AI APIs.

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Rev.ai

Rev AI, part of the Rev family, is a developer-first API that delivers industry-leading accuracy and fast performance at global scale. Click to learn more.

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Deepgram

Power enterprise voice solutions with Deepgram’s Speech-to-Text, Text-to-Speech, and Voice Agent APIs. Real-time, accurate, and built for scale.

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AssemblyAI

With AssemblyAI's industry-leading Speech AI models, transcribe speech to text and extract insights from your voice data.

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Vosk

Accurate speech recognition for Android, iOS, Raspberry Pi and servers with Python, Java, C#, Swift and Node.

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Descript

Descript is the AI video and audio editor that makes editing as easy as editing text. Record, transcribe, edit, and publish in one tool. Try it free.

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Otter.ai

Otter AI Meeting Agent supports real-time transcription, live chat, automated summaries, insights, and action items.

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Sonix

Transcribe audio and video to text in minutes with 99% accuracy. 54+ languages, AI summaries, and speaker detection. Try Sonix free — no credit card required.

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Trint

Fast-track your first draft with Trint's AI-connected media production. Transcribe, translate and collaborate in 50+ languages. Trusted by newsrooms worldwide.

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Happy Scribe

Turn every meeting into notes and decisions you can act on. AI transcription in 150+ languages, SOC 2 & GDPR, made in Europe. Free to try.

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Coqui STT

🐸STT - The deep learning toolkit for Speech-to-Text. Training and deploying STT models has never been so easy.

DeepSpeech (Mozilla)

DeepSpeech is an open source embedded (offline, on-device) speech-to-text engine which can run in real time on devices ranging from a Raspberry Pi 4 to high power GPU servers.

Julius

Open-Source Large Vocabulary Continuous Speech Recognition Engine

kaldi

kaldi-asr/kaldi is the official location of the Kaldi project.

vosk-api

Offline speech recognition API for Android, iOS, Raspberry Pi and servers with Python, Java, C# and Node

SpeechBrain

A PyTorch-based Speech Toolkit.

Sonix (Japanese focus)

99%の精度で音声・動画を数分でテキストに変換。54以上の言語、AI要約、話者識別に対応。Sonixを無料でお試し — クレジットカード不要。

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Verbit (Higher Education)

Get transcripts and captions that are purpose-built for law firms, courts, media & entertainment, higher education, and more.

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iFLYTEK (Chinese)

World-leading AI Solution Provider of Language Exchange & Machine Learning

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Baidu Speech (Chinese)

百度AI短语音识别,为您提供高精度的语音识别服务,融合百度领先的自然语言处理技术,支持多场景智能语音交互.

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Tencent Cloud ASR

腾讯云语音识别（ASR）为开发者提供语音转文字服务的最佳体验。语音识别服务具备识别准确率高、接入便捷、性能稳定等特点。腾讯云语音识别服务开放实时语音识别、一句话识别和录音文件识别三种服务形式，满足不同类型开发者需求……

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AmiVoice (Japanese)

Official website of Advanced Media Co., Ltd., a voice recognition company. Introducing various products using voice recognition technology AmiVoice.

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Mimic (Mycroft)

Mycroft's TTS engine, based on CMU's Flite (Festival Lite)

Azure Speech to Text (Custom Speech)

Explore Azure Speech in Foundry Tools(formerly AI Speech) for voice recognition and text to speech. Build multilingual AI apps with customized speech models.

See siteSee docs

Google Cloud Speech-to-Text (Medical)

Learn how to use Cloud Speech-to-Text medical models for transcribing medical conversations and dictations.

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Fireflies.ai Meeting Assistant

Fireflies takes notes, manages tasks, and automates workflows across meetings, email, chat, CRM, and your apps. Build a searchable knowledge base of your team’s work in one place.

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Otter.ai Business

Otter can make teams more collaborative automatically joining meetings and producing live transcriptions that can be annotated, highlighted, and shared.

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Amazon Transcribe Medical

Amazon Transcribe Medical is an automatic speech recognition (ASR) service that makes it easy for you to add medical speech-to-text capabilities to your voice-enabled applications.

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Temi Automated Transcription

Transcripts for all of your video and audio files

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Krisp AI Noise Cancellation & Transcription

Clear calls, smarter meetings—powered by #1 noise cancellation. Krisp brings Voice AI with an AI Note Taker, Accent AI, and Call Center AI.

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Papercup AI Dubbing & Transcription

Natural-sounding AI dubbing and professional voice-over services. Delivered by cutting-edge synthetic voices and expert voice talent.

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Whisper.cpp (Open‑Source)

Port of OpenAI's Whisper model in C/C++.

Murf AI Voice & Transcription

Generate human-like speech and deploy Conversational agents with Murf AI. The complete AI Voice platform trusted by 10 million+ developers, businesses, and creators.

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SpeechGen.io Real‑Time Transcription

Generate realistic Voiceovers online! Insert text to generate speech and download audio mp3/wav. Speak a text with AI-powered voices.

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Aiva.ai Meeting Summaries

AIVA, your AI music generation assistant

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Cobalt Speech & Language API

Cobalt builds speech recognition, voice intelligence and voice user interface technology that can run on-premise, in a private cloud, or on your device.

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Verbit AI Transcription for Education

Improve accessibility and ADA / WCAG compliance in higher ed & eLearning. Verbit provides live captions, transcripts & audio description.

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Otter.ai Live Captioning

Otter.ai uses artificial intelligence to empower users with real-time transcription meeting notes that are shareable, searchable, accessible and secure.

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Papercup AI Live Caption

Natural-sounding AI dubbing and professional voice-over services. Delivered by cutting-edge synthetic voices and expert voice talent.

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faster-whisper

Faster Whisper transcription with CTranslate2.

Piper TTS

A fast, local neural text to speech system.

Coqui TTS

🐸💬 - a deep learning toolkit for Text-to-Speech, battle-tested in research and production

Vosk Server

WebSocket, gRPC and WebRTC speech recognition server based on Vosk and Kaldi libraries

Buzz

Buzz transcribes and translates audio offline on your personal computer. Powered by OpenAI's Whisper.

WhisperX

WhisperX: Automatic Speech Recognition with Word-level Timestamps (& Diarization)

pyannote.audio

Neural building blocks for speaker diarization: speech activity detection, speaker change detection, overlapped speech detection, speaker embedding - GitHub

3D-Speaker

A Repository for Single- and Multi-modal Speaker Verification, Speaker Recognition and Speaker Diarization

WeSpeaker

Research and Production Oriented Speaker Verification, Recognition and Diarization Toolkit

GigaSpeech

Large, modern dataset for speech recognition.

TIMIT

Introduction TIMIT Acoustic-Phonetic Continuous Speech Corpus was a joint effort among the Massachusetts Institute of Technology (MIT), SRI International...

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Switchboard

Introduction Switchboard-1 Release 2 was developed by Texas Instruments in 1990-1991 and consists of approximately 260 hours of conversational telephone...

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NIST SRE

Summary:The goal of the NIST Speaker Recognition Evaluation (SRE) series is to contribute to the direction o

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Rev

Built for investigations that hold up under court. Rev’s legal AI platform turns digital evidence into verified, citable findings to help you manage your case.

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PaddleSpeech

Easy-to-use Speech Toolkit including Self-Supervised Learning model, SOTA/Streaming ASR with punctuation, Streaming TTS with text frontend, Speaker Verification System, End-to-End Speech.