AssemblyAI makes recorded and live speech usable application data
AssemblyAI offers recorded and real-time transcription APIs. Explore Universal-3.5 Pro, speaker labels, webhook delivery and usage-based pricing.
Voice & video
Speech, voice agents, avatars, generated video. Independent research in this category, newest first.
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Cartesia connects expressive speech with real-time voice workflows
Cartesia combines Sonic speech, Ink transcription and managed agents. Understand current credits, streaming contexts and production voice tradeoffs.
Deepgram puts speech recognition and turn-taking in the application
Deepgram offers transcription, speech and voice-agent APIs. Compare current rates, Flux turn-taking and the engineering choices behind an audio product.
Luma connects creative planning, image editing and generated video
Luma combines creative boards, image editing and video models. Understand its current Agents workflow, Ray3.2 costs and production review requirements.
Retell AI turns phone operations into explicit conversation flows
Retell AI combines voice agents, call flows and testing. Explore its component pricing, transfer behaviour and the work needed for reliable phone outcomes.
Vapi makes voice agents a configurable application layer
Vapi combines speech models, calling and API tools. Understand its hosting-plus-provider pricing and the engineering needed for reliable voice workflows.
Descript turns spoken recordings into editable text and finished video
How Descript’s transcript editing, Underlord and audio repair fit a production workflow, with current pricing and practical limits.
HeyGen turns approved scripts and presenters into repeatable video
How HeyGen’s avatars, AI Studio and video translation work, what the plans cost, and how to evaluate training and localisation workflows.
Runway brings video generation and transformation into a creative workspace
A guide to Runway’s video models, Edit Studio, reusable workflows and credit pricing, with a practical way to evaluate production fit.
ElevenLabs makes synthetic speech part of an audio production workflow
A practical guide to ElevenLabs speech generation, voice cloning, Studio, dubbing and pricing, including the production decisions that matter.
Synthesia makes scripted training video easier to produce and maintain
How Synthesia combines avatars, scripts and interactive video, with current pricing, publishing limits and a practical training workflow.