Assembly AI
by AssemblyAI
AI models for transcribing and understanding speech.
Score
Score
Our verdict
AssemblyAI provides a robust suite of AI models for speech-to-text and audio intelligence, catering to developers and enterprises aiming to integrate advanced voice capabilities into their applications. With a flexible pay-as-you-go pricing model and a comprehensive free tier, it offers scalability and cost-effectiveness. However, users should be aware of additional costs for advanced features, which can accumulate based on usage. Overall, AssemblyAI is a strong choice for those seeking to build and deploy speech AI solutions efficiently.
Overview
Score breakdown
Overall score
Scores are editorial assessments by the Compare Best AI team on a 0–10 scale.
Expert review
CBAI Editorial Team
Compare Best AI · Editorial Team
## Overview
How we tested
Days tested
7 days
Tasks evaluated
- ·Core Developer workflow test
- ·Pricing and plan evaluation
- ·Feature completeness review
- ·Ease of use and onboarding assessment
Method
Compared against Deepgram and Google Cloud Speech-to-Text using identical inputs
Reviewer
CBAI Editorial Team
Plans & pricing
Free
Individuals and small teams testing or with minimal usage needs
- 185 hours pre-recorded audio transcription
- 333 hours streaming audio transcription
- Up to 5 new streams per minute
- Developer docs and community support
Pay-as-you-go
Developers and enterprises with variable workloads requiring scalable solutions
- Unlimited access to Speech-to-Text and Audio Intelligence models
- Unlimited concurrent streams and pre-recorded concurrency starting at 200 files
- Customize rate limits
- Dedicated technical support
- BAA for HIPAA and compliance with EU Data Residency standards
- Self-hosted deployments (On-prem, VPC)
Pricing may vary by region. Always verify on the vendor's website.
Feature comparison
| Feature | Assembly AI | Deepgram | Google Cloud Speech-to-Text |
|---|---|---|---|
| Core | |||
| High-accuracy speech-to-text transcription | |||
| Speaker diarization | |||
| Output | |||
| Sentiment analysis | |||
| Summarization | |||
| Pricing | |||
| Free plan available | |||
| Dev | |||
| Public API | |||
| Integrations | |||
Is it right for you?
Good fit for
Developers
Build and integrate speech AI capabilities into applications using AssemblyAI's APIs.
Enterprises
Implement scalable speech-to-text solutions for large-scale operations.
Startups
Leverage AssemblyAI's flexible pricing and features to develop innovative voice applications.
Less suited for
Individuals with minimal transcription needs
Free tier may be sufficient; pay-as-you-go pricing may be unnecessary.
Users seeking a fully managed transcription service
AssemblyAI provides APIs; users must integrate and manage their own applications.
User reviews
Editorial score
Distribution is estimated from our editorial score. Verified user reviews coming soon.
Integrations
Reported connectors
Apps and services commonly connected out of the box or via official connectors.
- Python SDK
- TypeScript SDK
- Ruby SDK
- Go SDK
- RESTful API
- WebSocket API
Details
Category
Price
- Free
- Pay-as-you-go $0.15/hr
- Enterprise custom
Free version
Best for
- Voice assistant development
- Call analytics
- Meeting transcription
- Customer service quality assurance
- Medical voice documentation
Frequently asked questions
Assembly AI
Developer
Ready to get started?
Visit the Assembly AI website to explore plans and start your free trial.
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