A

Dictation API

API service

by AssemblyAI

Converts spoken audio into text with a cleanup pass and an accompanying verbatim transcript.

Find alternatives to Dictation API

What it does

• Speech to text

Features 4

• Sub-second finished textReturns cleaned-up dictation text in under a second, with a p50 of 134 ms on short clips.
• 19 languages with code-switchingSupports 19 languages with native code-switching so speakers can move between them mid-sentence.
• Formatting instructionsPer-request instructions can strip filler, apply house style, return a structured clinical note or translate.
• Keyterm promptingSend keyterms such as product, drug or provider names so they come back spelled correctly.

Sources

Pricing

Pricing page · 14 Oct 2026

"Pay as you go"

Description

Official documentation · 14 Oct 2026

"returns text that’s ready to send"

What it does

Official documentation · 14 Oct 2026

"A verbatim transcript of what was said"

Sold within

Official documentation · 14 Oct 2026

"Dictation is a separate service from Sync, Pre-recorded, and Streaming STT."

Name

Official documentation · 14 Oct 2026

"Introducing the Dictation API"

URL

Official documentation · 14 Oct 2026

"Introducing the Dictation API"

Deployment

Official documentation · 14 Oct 2026

"in every other language, call it over HTTP"

Interfaces

Official documentation · 18 Oct 2026

Page: 'The Dictation API turns a spoken clip into finished, formatted text in a single API call'.

Intended for

Official documentation · 18 Oct 2026

Page: 'Add fast, accurate dictation to your product with a single line API call'.

Also from AssemblyAI

• AssemblyAI Pre-recorded Speech-to-Text API API service

  Speech-to-text API for recorded audio and video files: transcripts in 99 languages with speaker diarization, language detection, word-level timestamps and keyterm prompting, billed per second of audio.

• AssemblyAI Realtime Speech-to-Text API API service

  Live transcription API: audio streamed over a WebSocket comes back as text within a few hundred milliseconds, with endpointing for voice agents, sold by the hour of session time and also offered self-hosted.

• AssemblyAI Voice Agent API API service

  One connection that runs a production voice agent end to end: speech recognition, a conversational language model, voice generation, turn detection, interruptions and tool calls, at one flat hourly rate.

• AssemblyAI Speech Understanding API API service

  Add-on models switched on in a transcription request that turn recorded audio into structured output: speaker labels, sentiment, entities, topics, key phrases, summaries, translation and custom formatting, each priced per audio hour.

• AssemblyAI LLM Gateway API service

  OpenAI-compatible API that routes requests to GPT, Claude, Gemini, Qwen and other hosted models with automatic fallbacks, at the providers' own token prices with no markup, beside AssemblyAI's speech APIs.

• AssemblyAI Guardrails API service

  Safety add-ons for transcription requests: profanity filtering, content moderation and redaction of personal data in the transcript text and in the audio itself, each toggled per request.

• Sync Speech-to-Text API API service

  Returns a transcript of a short audio clip in a synchronous API response.

• Blurt Application

  Converts speech into text wherever the user is typing.

Open AssemblyAI in the directory

Something wrong here? Send a correction — quote this product id: assemblyai-dictation-api.