AI Voice, Audio & Music

AS

AssemblyAI

4.5/5.01 verified review

Paid

AI speech models API for transcription, voice understanding, and audio intelligence.

• High accuracy speech recognition models supporting multiple languages.
• Real-time streaming transcription capabilities via WebSockets.
• Advanced speaker diarization and speech understanding features.

TH

ThunderPhone

4.3/5.01 verified review

Paid·$0.02/mo

AI-powered voice platform and automated phone agents.

• Advanced architecture running multiple transcription and language models per call.
• Full automation through the Zeus engine for building and testing voice agents.
• Competitive per-minute call pricing for scalable business automation.

LO

LoudLAB

4.3/5.01 verified review

Paid

System audio control center and per-app volume mixer for macOS.

• Independent volume control per individual application running on macOS.
• Native execution without kernel extensions or system reboots.
• Perpetual one-time purchase license without forced subscription models.

RA

Retell AI

4.3/5.01 verified review

Paid

AI voice agent platform for low-latency automated phone calls.

• Sub-second response latency for natural conversations.
• Advanced interruption handling during voice interactions.
• HIPAA and SOC 2 compliance.

WE

WellSaid

4.3/5.01 verified review

Paid·$59/mo

High-fidelity AI voice generator for professional media and corporate production workflows.

• High fidelity synthetic voices with adjustable accents and styles.
• Models trained using professional voice actor licenses.
• Governance controls and intellectual property protection.

WR

Woodstitch Research

4.0/5.01 verified review

Paid

Blind listening studies evaluating synthetic voice quality using pairwise human judgments.

• Rigorous blind pairwise listening methodology.
• Raw datasets and clips published under open licenses.
• Objective evaluation conducted with real human listeners.

DR

DropToText

4.0/5.01 verified review

Paid·$1.75/mo

Audio and video transcription with speaker separation and timestamps.

• Pay-as-you-go pricing model with no mandatory monthly subscriptions.
• Support for multiple file formats and files up to 4 hours long.
• Automatic speaker separation and detailed timestamps.

LT

Lecture to Book

3.7/5.01 verified review

Paid·$10/mo

Turn lecture recordings into structured books with chapters and relevant figures.

• Automatic conversion of video or audio recordings into structured books.
• Direct export to standard PDF and ePub formats for offline reading.
• Inclusion of diagrams and images alongside the explanatory text.