What is AssemblyAI?
AssemblyAI offers highly accurate speech-to-text models via API, including streaming transcription, speaker diarisation and speech understanding features. It powers many AI notetakers and voice products.
Best for: Developers, AI startups.
Key features
- Async and streaming STT
- Speaker diarisation
- Multilingual models
- Audio intelligence
- LLM integration
Pros and cons
Pros
- Top-tier accuracy
- Excellent developer docs
- Free credits to start
Cons
- Requires coding
- Costs scale with volume
AssemblyAI pricing
| Pricing model | Free plan |
|---|---|
| Starting price | Free |
| Platforms | API |
| Launched | 2017 |
Prices change often. Check the AssemblyAI website for current plans.
Our verdict
AssemblyAI scores 8.6/10 in our review. Its biggest strength: top-tier accuracy. The main drawback: requires coding. If it isn't the right fit, OpenAI API is the closest alternative.
Frequently asked questions
What is AssemblyAI?
AssemblyAI offers highly accurate speech-to-text models via API, including streaming transcription, speaker diarisation and speech understanding features. It powers many AI notetakers and voice products.
Is AssemblyAI free?
AssemblyAI has a free plan with limits.
What are the best AssemblyAI alternatives?
Popular alternatives include OpenAI API, Anthropic API, Google Gemini API, Hugging Face.
Who is AssemblyAI best for?
AssemblyAI is best for developers, ai startups.