AssemblyAI
by AssemblyAI
At a glance
Speech-to-text API providing transcription and audio intelligence models for developers.
speech-to-text api audio-intelligence
- Licence
- Not recorded
- Category
- Audio, Voice & Music
- Business model
- Paid
- Availability
- Global
- Launched
- 2017
Overview
AssemblyAI is a speech-to-text API company providing transcription and audio-intelligence models for developers. Its models handle high-accuracy transcription plus features like speaker diarization, summarization, and topic detection. Pricing is usage-based per hour of audio, with free credits to start.
Compare this tool Suggest a correction
Key features
- High-accuracy speech-to-text API for pre-recorded and real-time audio
- Voice Agent API for speech-to-speech agents over a single WebSocket
- Speech Understanding, Guardrails, and an LLM Gateway for voice workflows
- Speaker diarization and sentiment analysis
Use cases
- Adding transcription to apps and platforms
- Analyzing call-center and meeting audio
- Building voice features on top of speech models
Pricing
Pricing is usage-based per hour of audio; new developers receive free starter credits.
Record details
Provenance, dates and links are kept here so the main sections stay about the product itself.
Links, dates and provenance
- Record updated
- 2026-10-09
- Pricing
- www.assemblyai.com ↗
- Documentation
- www.assemblyai.com ↗
- Founded
- 2017
- Headquarters
- US
Selection profile
Every field says where its value comes from. "Unknown" means we have not confirmed it — it does not mean the product lacks the feature.
Selection profile11 fields3 unknown
- Tasks it fits
- Audio and voice
Derived from the record: category "audio-voice".
Suggest a correction - How you use it
- API
Derived from record tag matching /^(api|llm-api|search-api)$/.
Suggest a correction - Runs on
- Web
Derived from platform words in the record description/features/tags.
Suggest a correction - Where it runs
- Vendor cloud
Vendor-hosted product; no self-hosted option is recorded.
Suggest a correction - Works offline
- Not recorded
The record contains no offline-operation claim.
Suggest a correction - Official service region
- Global
Mirrors the availability field already on the record ("global").
Suggest a correction - Public API
- Yes
Matched on the vendor page: “rything you need to integrate, build, and ship with AssemblyAI — from API reference to step-by-step guides. resources Documentation API Reference Cookbooks Support Change”
Suggest a correction - Licence
- proprietary
Commercial product; no source licence is published in the record.
Suggest a correction - Commercial use
- Not recorded
Commercial product; the terms reviewed here do not state a non-commercial restriction, but that was not verified.
Suggest a correction - Interface languages
- Not recorded
No vendor page read in this pass states the product's own interface languages; the key exists so the field can be answered later rather than left absent.
Suggest a correction - Billing
- Subscription Free allowance: No Subscription required: Yes
Prices are the vendor’s advertised entry price and exclude taxes; always confirm on the vendor’s own page.
Suggest a correction
Where each value comes from
- Tasks it fits
- Our inference
- How you use it
- Our inference
- Runs on
- Our inference
- Where it runs
- Our inference
- Works offline
- Our inference
- Official service region
- Our inference
- Public API
- Verified 2026-10-09 www.assemblyai.com ↗
- Licence
- Our inference
- Commercial use
- Our inference
- Interface languages
- Unknown
Key facts and their evidence
Each fact lists the conditions it holds under, the page it was read from and the day it was checked.
-
API: Public API documented Verified 2026-10-09 www.assemblyai.com ↗
Applies to: As stated on assemblyai.com on 2026-10-09
Matched on the vendor page: “rything you need to integrate, build, and ship with AssemblyAI — from API reference to step-by-step guides. resources Documentation API Reference Cookbooks Support Change”
Suggest a correction
Frequently asked questions
What does AssemblyAI provide?
AssemblyAI provides speech-to-text and audio-intelligence APIs for transcription, diarization, and summarization.
Who is AssemblyAI for?
AssemblyAI is aimed at developers building transcription and audio-analysis features into applications.
How is AssemblyAI priced?
AssemblyAI is priced by hour of audio processed, with free credits for new accounts.
What does the AssemblyAI record not establish?
The vendor pages fetched did not state AssemblyAI's licence terms, regions or languages, and no self-hosted or offline deployment option is recorded for it.
Similar products
- Deepgram — Speech recognition and voice AI API for real-time transcription and audio understanding.
- Whisper — OpenAI's open-source automatic speech recognition model; OpenAI's current transcription models are the gpt-transcribe and gpt-4o-transcribe family, while whisper-1 remains available.
- ACE Studio — ACE Studio: Singing vocals synthesized from MIDI notes and lyrics.
- Adobe Podcast — Adobe Podcast: Background noise and reverb reduction.
- ai-coustics — ai-coustics: Real-time speech enhancement SDK with target-speaker isolation.
- AIVA — AI music composition assistant that generates original tracks in many styles for media projects.
All AssemblyAI alternatives → · All Audio, Voice & Music products →
Related guides
Sources
- Official website ↗
- Documentation ↗
- AssemblyAI | AI models to transcribe and understand speech ↗
- Official pricing ↗
This record was last reviewed on 2026-10-09.
Machine-readable record: /api/products/assemblyai.json · Spot an error? Suggest a correction