AI Tool
AssemblyAI pricing, features, company info, and alternatives
A factual product page for AssemblyAI covering speech APIs, security signals, and deployment options.
Last updated April 2026 · Pricing and features verified against official documentation
Pricing
Current public pricing tiers on file for AssemblyAI, last verified Apr 21, 2026.
Free
$0 / month
Up to 333 hours of pre-recorded or streaming audio and up to 5 new streams per minute; no credit card required.
Universal-2
$0.15 / hour
Usage-based transcription rate.
Universal-3 Pro
$0.21 / hour
Usage-based transcription rate.
Universal-Streaming
$0.15 / hour
Real-time English transcription rate.
Whisper-Streaming
$0.30 / hour
Open-source Whisper model served on AssemblyAI's infrastructure.
Universal-3 Pro Streaming
$0.45 / hour
Real-time transcription rate.
Enterprise
Custom
Custom rate limits, enhanced concurrency, SLAs, and self-hosted deployments.
What You Can Do With It
The main capabilities that shape how people use AssemblyAI today.
REST and WebSocket APIs cover pre-recorded and streaming speech-to-text.
Speech understanding adds speaker identification, entity detection, sentiment analysis, translation, auto chapters, and other transcript enrichment features.
LLM Gateway provides a single API layer for OpenAI, Anthropic, Google, and other model providers.
EU data residency and self-hosted deployment options are available for regulated workloads.
Best For
Who AssemblyAI is most clearly built for.
Teams building speech-driven products that need a public API rather than a finished app.
Developers adding transcription, diarization, or transcript analytics to existing workflows.
Organizations that need EU data residency or self-hosted deployment options.
Company
Leadership and company context for AssemblyAI.
CEO
Dylan Fox
Founders
Dylan Fox
Platforms
Where you can use AssemblyAI today.
Web
API
Integrations
Notable connected tools and ecosystem hooks for AssemblyAI.
OpenAI
Anthropic
Privacy Notes
Publicly stated data-handling notes that matter when evaluating AssemblyAI.
AssemblyAI says it may process customer-directed personal data as a service provider under the applicable customer agreement.
The default pre-recorded endpoint processes requests in the US, while the EU endpoint keeps audio and transcription data in the European Union.
The privacy policy says AssemblyAI retains personal data as long as needed to provide the services or meet legal obligations.
Compliance
Public compliance or enterprise-governance signals we found for AssemblyAI.
SOC 2 Type 1
SOC 2 Type 2
PCI-DSS 4.0 Level 1
GDPR
ISO 27001
HIPAA
EU Data Residency
Access
How to integrate or build around AssemblyAI.
Public API
Yes
Docs
Available
Alternatives
Other tools worth considering alongside AssemblyAI.
Voice and audio AI platform for speech, cloning, dubbing, and agents.
AI video and audio editor built around transcript editing and voice tools.
AI note-taking and transcription tool for meetings, files, and live conversations.
Product Snapshot
AssemblyAI is a speech AI platform for pre-recorded transcription, streaming transcription, speech understanding, and LLM Gateway workflows. Its public pricing page shows a free tier plus usage-based model pricing.
What You Can Do With It
- Transcribe pre-recorded audio through a REST API.
- Transcribe live audio through a WebSocket streaming API.
- Add speech understanding features such as speaker identification, entity detection, sentiment analysis, translation, and auto chapters.
- Route transcript data into LLM Gateway workflows with OpenAI, Anthropic, Google, and other providers.
Why It Stands Out
It combines speech-to-text, speech understanding, and LLM Gateway access in one developer-facing platform, with public support for EU data residency and self-hosted deployments.
Tradeoffs To Know
- The product is API-first, so it requires integration work rather than acting like a finished notes app.
- Pricing is usage-based and model-specific, so billing can change with the model or add-on features you choose.
- Enterprise deployment options, including custom rate limits and self-hosted setups, are handled through the higher-touch pricing path.
Changes to this tool page
- April 2026 Added AssemblyAI after verifying its public pricing, API documentation, company identity, and security pages.
Sources
- assemblyai.com/pricing
- assemblyai.com/about
- assemblyai.com
- assemblyai.com/blog/announcing-our-50m-series-c-to-build-superhuman-speech-ai-models
- assemblyai.com/blog/series-a-announcement
- assemblyai.com/blog/new-feature-paginate-through-historical-transcripts
- assemblyai.com/products/speech-to-text
- assemblyai.com/docs/api-reference/overview
- assemblyai.com/docs/speech-to-text/speech-recognition
- assemblyai.com/docs/pre-recorded-audio/select-the-region
- assemblyai.com/legal/privacy-policy
- assemblyai.com/blog/our-ai-lakehouse
- assemblyai.com/blog/expanding-enterprise-security-and-data-residency-capabilities