Tool · Voice and speech

AssemblyAI

A speech-to-text service for developers: send it recordings or live audio and get back text, with options such as who-said-what, translation and summaries. Pay by the hour of audio; free hours to start. Needs coding, though there is a test playground.

Go to AssemblyAI’s website

At a glance

Open or closed: Closed
Only usable through the maker's app or API
source · checked 12 Oct 2026 · checked on the maker's own page
Licence: AssemblyAI Terms of Service (The maker's own terms)
source · checked 12 Oct 2026 · checked on the maker's own page
Can I sell what I make?: The terms don't say clearly
Terms 4.3: you keep your data, but the terms don't say who owns outputs (transcripts). Licence 2.1 is for your internal business purposes; 2.4 bars using outputs to train speech or language models.
source · checked 12 Oct 2026 · checked, but the page was unclear or partial
Cost: Free option: Up to 185 hours of pre-recorded or 333 hours of streaming transcription, no card needed
Plans below.
How you use it: Maker's own API, In your browser
Mainly an API; a no-code playground lets you test models in the browser.
source · checked 12 Oct 2026 · checked, but the page was unclear or partial
Skill needed: Technical
source · checked 12 Oct 2026 · checked, but the page was unclear or partial
Made by: AssemblyAI, Inc. (US)
Terms 9.9 give a legal-notice address in New York, NY; the terms don't name the country in words.
source · checked 12 Oct 2026 · checked, but the page was unclear or partial
Status: Available
source · checked 12 Oct 2026 · checked on the maker's own page

What you can make with it

A voice or speech, text from a recording (main use)
A voice or speech, a written translation of a recording

audio to text

Translation is a $0.06/hour add-on. Also summaries, speaker labels, PII redaction and a voice agent API.

source · checked 12 Oct 2026 · checked on the maker's own page

Plans and prices

Plan	Price	Includes
Pay as you go: Universal-3.5 Pro (pre-recorded)	$0.21 per 60 minutes of audio or video	Per hour of audio
Pay as you go: Universal-2 (pre-recorded)	$0.15 per 60 minutes of audio or video	Per hour of audio
Pay as you go: Universal-Streaming (realtime)	$0.15 per 60 minutes of audio or video	Per hour of audio

Some plans are not listed here; see the source for the full list.

Shown as '$' only; USD assumed. Sample of the main rates.

source · checked 12 Oct 2026 · checked, but the page was unclear or partial

Rights and safety

Trains on your work?: Trains on your work unless you opt out
Terms 4.3: customer data may train AssemblyAI's models; an opt-out FAQ applies 'to the extent applicable to' your pricing plan.
source · checked 12 Oct 2026 · checked, but the page was unclear or partial

Models it uses (not yet listed on Plainly)

Universal-3.5 Pro, Universal-2, Universal-Streaming

Other options for “A voice or speech, text from a recording”

Adobe Podcast (Enhance Speech), Adobe Premiere, Async (formerly Podcastle), AudioShake, Auphonic, Azure AI Speech, CAMB.AI, Cartesia, Cleanvoice AI, Clipchamp, Deepgram, Descript, Distil-Whisper, Dubverse, ElevenLabs, Filmora, Gling, Happy Scribe, Hugging Face, Kapwing, Krisp, MacWhisper, MiniMax Audio, Narakeet

About this entry

Facts last checked 12 Oct 2026 against the maker’s own pages (each fact links to its source). Entry status: draft. Plain-English summary written by Plainly.