audio-to-text

Cartesia provides text-to-speech (Sonic), speech-to-text (Ink) and voice agent APIs for developers, with voice cloning on paid plans. Free plan has 20K credits a month; Pro is $5 a month.

The OpenAI API is OpenAI's developer platform for text, image and audio models, billed per use and separate from ChatGPT. Speech-to-text is listed from $0.0045 per minute; no free credit is mentioned on the pricing page.

Rev offers AI transcription, human transcription and captions, plus legal and evidence tools. The free plan includes 45 AI minutes per user per month; Essentials is $29.99 a month and human transcripts are $1.99 per minute.

MacWhisper is a Mac app that transcribes audio, video and meetings on your own computer using local AI models. A free tier is listed; Pro is a one-time purchase of 64 euros with lifetime updates.

Happy Scribe transcribes audio and video with AI or optional human review in 150+ languages, makes subtitles, and offers an AI notetaker for Zoom, Meet and Teams. Free plan is a 10-minute trial.

Sonix is a web-based AI transcription, translation and subtitle service for audio and video in 54+ languages, with an API and integrations. New accounts get 30 free minutes; subscriptions start at $25 a month.

Deepgram offers speech-to-text, text-to-speech and Voice Agent APIs for developers, in the cloud or self-hosted. It advertises $200 in free credit, then pay as you go from about $0.0043 per minute for pre-recorded audio.

AssemblyAI provides speech-to-text and voice agent APIs for developers, with pre-recorded and real-time transcription in 99 languages. Free tier covers up to 185 hours of pre-recorded audio; pay as you go from $0.15 per hour.

Fellow is an AI meeting assistant that records, transcribes and summarizes meetings and tracks action items. The Free plan has 5 AI notes lifetime; BAAs are available for regulated customers.

Read AI is an AI meeting notetaker for Teams, Meet and Zoom that produces summaries, transcripts and action items. The Free plan includes 5 meeting transcripts and 5 reports per month.

Avoma is an AI meeting assistant and conversation intelligence platform for sales and customer teams, covering notes, scheduling, coaching and CRM updates. It offers a 14-day trial and lists SOC 2 Type II.

Fathom is an AI notetaker that records, transcribes and summarizes meetings, with a bot or bot-free option. The Free plan lists unlimited recordings and transcriptions for individuals.

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Notta transcribes and summarizes meetings, interviews and lectures in 58 languages, with web, mobile, desktop and Chrome options. The Free plan gives 120 transcription minutes a month.

Otter is an AI meeting agent and notetaker with real-time transcription, summaries and action items. The free Basic plan includes 300 transcription minutes per month.

Fireflies is an AI meeting assistant that transcribes, summarizes and searches meetings, with web, mobile, desktop and API access. The Free plan includes 400 minutes of storage per team.