Results for “audio annotation”

13 tools in the directory · Updated 2 Nov 2026

“audio annotation”Ways to use: SDK / libraryBacked by Y CombinatorShowing 13 tools

Reality Defenderby Reality DefenderYC W22Deepfake detection API and platform for audio, video, images, and callsFreemium
Magic Hourby Magic HourYC W24Browser-based AI video, image, and audio creation with an APIFreemium
sync.by sync.YC W24AI lip sync API and studio for matching speaker lips to new audioPay as you go
Encordby EncordYC W21Data infrastructure for managing, annotating, and evaluating AI training dataPaid
LanceDBby LanceDBYC W22AI-native multimodal lakehouse for training data, features, and retrievalFreemium
Tavus Conversational Video Interface (CVI)by TavusYC S21Real-time face-to-face AI video agents built on Tavus APIsUnknown
Supervisionby RoboflowYC S20Reusable computer vision tools for datasets, detections, and video processingFree
Roboflowby RoboflowYC S20Vision AI platform for building, training, deploying and monitoring computer vision applications.Freemium
Recall.aiby Recall.aiYC W20API for capturing meeting recordings, transcripts, and metadataPay as you go
Phonicby PhonicYC W20Speech-to-speech models and tools for building voice agents.Freemium
Langfuseby LangfuseYC W23Open-source platform for tracing, evaluating, and improving LLM and agent applicationsFreemium
Retell AIby Retell AIYC W24AI voice agents for automating phone callsPay as you go
Confident AIby Confident AIYC W25AI quality platform for evaluating, tracing, and monitoring LLM applications across teams.Freemium