Voice AI apps

Voice cloning, audio watermarking, and deepfake detection in one platform.

Resemble AI spans both sides of synthetic voice: generating it and policing it. The platform offers voice cloning and text-to-speech built on its Chatterbox models, real-time audio watermarking, and Detect, a multimodal deepfake detector covering audio, image, and video. It deploys in the cloud or fully on-premises for regulated environments.

AI voice generator studio with 200+ voices, dubbing, and a low-latency TTS API.

Murf AI is a text-to-speech platform pairing a studio editor — 200+ voices across 35+ languages, voice cloning, dubbing, and a voice changer — with developer APIs. Its Gen 2 speech model focuses on pronunciation accuracy and granular voice controls, while the Falcon API targets sub-130ms latency for real-time voice agents. Integrations include Canva, PowerPoint, and Google Slides.

Enterprise speech APIs — real-time STT, TTS, and voice agents in 55+ languages.

Speechmatics provides speech-to-text (batch and sub-second real-time), text-to-speech, and a Flow API for building voice agents, with accuracy that holds up across accents and dialects in 55+ languages. The same engine deploys in cloud, container, on-prem, or fully on-device, and it powers products from Adobe, LiveKit, and Ubisoft.

Enterprise voice AI platform for automated phone calls.

An enterprise platform for building AI agents that handle inbound and outbound phone calls 24/7 with natural, real-time conversation. Bland bundles the language model, speech-to-text, text-to-speech, and telephony into a single per-minute rate, and integrates with tools like Twilio, Salesforce, HubSpot, and Zapier. Build agents in a web dashboard or via a REST API; a free tier lets you start before moving to usage-based paid tiers.

Production speech-to-text + audio intelligence API.

Speech recognition API with batch and real-time streaming transcription, speaker diarization, and language detection. Its Universal models pair with optional Speech Understanding features (summarization, sentiment, redaction) so a single API can build conversation-intelligence products. Starts with a free credit and pay-as-you-go, per-second billing.

Build, test, and deploy AI voice agents for phone calls.

A no-code platform for humanlike voice agents that handle inbound and outbound phone calls — receptionists, IVR, and outbound campaigns. It bundles telephony (SIP / Twilio), a proprietary turn-taking model for low-latency conversations, prompts, tools, and call analytics. Pay-as-you-go pricing with free starter credits.

Conversational voice companion chasing "voice presence."

A conversational-speech company building lifelike voice companions — Maya and Miles — that interrupt, self-correct, and use natural pacing. The web demo lets you talk to them in real time, and Sesame has open-sourced its underlying CSM (Conversational Speech Model) base model. Co-founded by Oculus co-creator Brendan Iribe.

AI voice dictation that types for you across every app, on desktop and mobile.

A dictation tool that turns speech into clean, formatted text in any app — removing filler words and applying context-aware edits as you talk. One subscription works across macOS, Windows, iOS, and Android, syncing your custom vocabulary and snippets between devices.

Empathic Voice Interface — speech-to-speech AI that hears tone.

A voice AI toolkit built around the Empathic Voice Interface (EVI), a speech-to-speech model that infers emotion and prosody from a user's voice and modulates its replies accordingly. Exposed as an API for building expressive voice agents and assistants. From a research lab focused on emotional intelligence in AI.

AI text-to-speech that reads any document, PDF, or page aloud.

Speechify is an AI text-to-speech app that turns articles, PDFs, emails, and books into natural-sounding audio with high-definition voices, adjustable speed, and OCR for scanned text. It runs on iOS, Android, web, a browser extension, and desktop, and offers a separate Studio product plus a text-to-speech API for developers.

Production speech-to-text. The STT default for many companies.

End-to-end speech recognition platform — real-time streaming, batch transcription, speaker diarization, and language detection. Strong on accented speech, telephony audio, and long-form recordings.

Frontier TTS, voice cloning, and dubbing. Industry default.

Hosted speech synthesis at near-human quality — TTS, voice cloning, multilingual dubbing, and conversational voice agents. Default choice when you need a voice that sounds like a person, not a robot.

Low-latency streaming TTS. Sub-100ms first audio.

Streaming-first speech synthesis built around the Sonic family of state-space models. Aims at real-time agent voices where latency between turns is the product. Strong choice for sub-200ms voice loops.

Voice agent infrastructure. Build a phone-agent in a weekend.

Production voice-agent platform — telephony, STT, LLM, TTS, and interrupt handling stitched together so you call an endpoint and get a working phone agent. Pluggable models at every layer.