Advanced Voice Mode
Advanced Voice Mode is a real-time, spoken conversation feature in ChatGPT, developed by OpenAI, that lets users talk with the assistant using natural speech and receive spoken replies.
Voice AI
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Showing 1-41 of 41 articles
Amazon Alexa
Amazon Alexa is a virtual assistant developed by Amazon, first introduced on November 6, 2014, alongside the Amazon Echo smart speaker, and rebuilt in 2025 as a generative AI assistant called Alexa+ that runs…
AssemblyAI
AssemblyAI is an American Speech AI company, founded in 2017 by Dylan Fox in San Francisco, that trains its own automatic speech recognition models and sells them to developers and enterprises through a single…
Bland AI
Bland AI is an enterprise voice AI platform that enables businesses to deploy, manage, and scale AI-powered phone agents for inbound and outbound calling.
Cartesia
Cartesia is a San Francisco-based AI company focused on real-time voice synthesis, speech recognition, and state space model (SSM) research.
CosyVoice
CosyVoice is a family of open-source multilingual neural text-to-speech (TTS) and voice cloning models developed by the Tongyi Speech Lab (Tongyi SpeechTeam) at Alibaba Group and released under the Apache 2.0…
Deepgram
Deepgram is an American voice artificial intelligence company, founded in 2015 and headquartered in San Francisco, that builds proprietary deep learning models for speech recognition, text-to-speech synthesis…
Deepgram Nova-3
Deepgram Nova-3 is the third-generation automatic speech recognition (ASR) model developed by Deepgram, a San Francisco-based voice AI company.
ElevenLabs
ElevenLabs is a voice and audio artificial intelligence company that builds text-to-speech AI, voice cloning, AI dubbing, generative sound effects, music synthesis, and conversational voice agent technology.
GLM-4-Voice
GLM-4-Voice is an open-weights end-to-end speech-to-speech large language model released in October 2024 by Zhipu AI together with the Knowledge Engineering Group (KEG) at Tsinghua University.
GPT-Live
GPT-Live is a family of full-duplex voice models developed by OpenAI for continuous spoken interaction.
GPT-Realtime / OpenAI Realtime API
GPT-Realtime is a family of speech-to-speech models exposed through the OpenAI Realtime API, a low-latency interface that lets developers build voice agents which take spoken audio in and return spoken audio…
Gemini Live
Gemini Live is Google's natural-voice conversational mode in the Gemini app: a hands-free, interruptible spoken interface that lets a person talk to Google's AI assistant in real time, the way they would on a…
Gladia
Gladia is a French artificial-intelligence company that builds audio infrastructure for developers and voice-product teams, centered on a speech-to-text (transcription) API.
HeyGen
HeyGen is an American artificial intelligence company headquartered in Los Angeles, California, that develops AI-powered video generation software specializing in digital avatars, voice cloning, and…
Hume AI
Hume AI is a New York-based artificial intelligence research company and API platform, founded in March 2021 by Alan Cowen, that builds "emotionally intelligent" voice AI: models trained to measure human…
Inworld AI
Inworld AI is an American artificial intelligence company headquartered in Mountain View, California, that builds real-time voice and character AI infrastructure for games, interactive applications, and voice…
LiveKit Agents
LiveKit Agents is an open source framework for building realtime voice, video, and multimodal AI agents
Moshi
Moshi is a full-duplex speech-to-speech foundation model developed by Kyutai, a French nonprofit artificial intelligence research laboratory.
Murf AI
Murf AI is an artificial intelligence company that develops a text-to-speech platform for generating realistic synthetic voiceovers.
Muse Voice Transcribe
Muse Voice Transcribe is a hosted speech recognition model developed by Meta Superintelligence Labs. Meta released it on September 1, 2026 as the lab's first real-time audio perception model.
OpenAI Presence
OpenAI Presence is a managed enterprise platform from OpenAI for deploying governed AI agents in customer-facing and internal workflows.
OpenAI Realtime API
The OpenAI Realtime API is a speech-to-speech interface from OpenAI that lets developers build low-latency, bidirectional voice AI applications powered by GPT-4o and later by the purpose-built gpt-realtime…
Pipecat
Pipecat is an open-source Python framework for building real-time voice and multimodal conversational AI agents.
PlayHT
PlayHT, later rebranded PlayAI (and reachable at play.ht and play.ai), was an American generative AI voice company that built text-to-speech models, voice cloning tools, and a platform for conversational AI…
PolyAI
PolyAI is a British enterprise voice AI company founded in 2017 that builds autonomous phone agents for large-scale contact centers.
Resemble AI
Resemble AI is a generative voice and AI security company based in San Francisco, California, and originally founded in Toronto, Canada.
Retell AI
Retell AI is a voice AI agent platform that enables businesses to build, deploy, and manage AI-powered phone agents for inbound and outbound call automation.
Rime (company)
Rime (also styled Rime Labs, and reachable at rime.ai) is an American artificial intelligence company that builds text-to-speech and spoken-language models tuned specifically for business voice agents…
SAG-AFTRA
SAG-AFTRA (the Screen Actors Guild-American Federation of Television and Radio Artists) is an American labor union representing performers in film, scripted television, streaming, video games, commercials, and…
Sesame (AI company)
Sesame (formally Sesame AI Labs) is a San Francisco-based artificial intelligence company founded in June 2023, best known for developing the Conversational Speech Model (CSM) and the Maya and Miles voice…
Sindarin
Sindarin (stylized sindarin. and operating as Sindarin Persona) is a small American startup building a real-time conversational voice AI platform for developers.
Siri
Siri is the voice assistant developed by Apple Inc. that launched on the iPhone 4S on October 14, 2011, making it the first mainstream voice assistant shipped on a smartphone .
Speechmatics
Speechmatics is a British artificial intelligence company that develops automatic speech recognition (ASR) and voice AI technology for enterprise customers.
Superwhisper
Superwhisper is a system-wide voice-to-text dictation application for macOS, Windows, and iOS, built by SuperUltra, Inc., a bootstrapped Toronto company founded by Neil Chudleigh.
Tavus
Tavus is an American generative AI research company headquartered in San Francisco, California, that develops video generation models and real-time conversational video technology.
Vapi
Vapi is a voice AI orchestration platform that lets software developers build, deploy, and scale AI phone agents through a programmable API.
Voice Engine (OpenAI)
Voice Engine is a speech-generation and voice-cloning model developed by OpenAI that can produce natural-sounding speech resembling a specific person from a single audio sample as short as 15 seconds.
Voice assistant
A voice assistant is a software agent whose primary interface is spoken language: it listens for a trigger, converts speech to a machine-readable request, decides what the speaker wants, and answers with…
Voice cloning
Voice cloning is the use of machine learning to generate synthetic speech in the voice of a specific real person (the target speaker) from a sample of their recorded audio.
XTTS (Coqui XTTS)
XTTS (sometimes stylized ⓍTTS, short for "cross-lingual text-to-speech") is an open-weights multilingual text-to-speech model developed by Coqui AI that performs zero-shot voice cloning from short reference…