A detailed comparison of AssemblyAI and Whisper (OpenAI) to help you choose the right tool for your needs.
AI speech-to-text and audio intelligence API for developers.
OpenAI's open-source speech recognition and transcription model.
| Plan | AssemblyAI | Whisper (OpenAI) |
|---|---|---|
| Free Tier | ✓ 5 hours free | ✓ Free (open source) |
| Lowest Paid | $0.37/hour | $0.006/min (API) |
| Enterprise | Custom pricing | API pricing |
| Feature | AssemblyAI | Whisper (OpenAI) |
|---|---|---|
| Transcription | ✓ | — |
| Summarization | ✓ | — |
| Sentiment analysis | ✓ | — |
| Content moderation | ✓ | — |
| Topic detection | ✓ | — |
| Entity detection | ✓ | — |
| Speech recognition | — | ✓ |
| 99 languages | — | ✓ |
| Translation | — | ✓ |
| Open source | — | ✓ |
| Self-hostable | — | ✓ |
| API access | — | ✓ |
| Open Source | ✗ | ✓ |
| Rating | ⭐ 4.2 | ⭐ 4.6 |
Choose AssemblyAI if: You need developers needing comprehensive audio intelligence apis. AssemblyAI excels with its comprehensive api and high accuracy.
Choose Whisper (OpenAI) if: You need developers needing self-hosted transcription. Whisper (OpenAI) stands out with its free and open source and 99 languages.
Best free option: Both AssemblyAI and Whisper (OpenAI) offer free tiers. AssemblyAI offers "5 hours free" while Whisper (OpenAI) offers "Free (open source)".
It depends on your needs. AssemblyAI is better for developers needing comprehensive audio intelligence apis, while Whisper (OpenAI) is better for developers needing self-hosted transcription. Both are excellent tools rated 4.2 and 4.6 respectively.
AssemblyAI starts at $0.37/hour while Whisper (OpenAI) starts at $0.006/min (API). Both offer free tiers.
Most tools offer import/export features to help you migrate. We recommend trying Whisper (OpenAI)'s free tier before fully committing to a switch.
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