AssemblyAI
Trigger.dev
| Feature | AssemblyAI | Trigger.dev |
|---|---|---|
| Pricing | Free / from $0.12/mo | Free / from $0/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.4 / 5 |
| Best For | developers, podcast-platforms, meeting-tools, media-companies | typescript-developers, saas-apps, background-processing, serverless-teams |
| Founded | 2017 | 2022 |
| Speech To Text | ✓ | ✗ |
| Real Time Transcription | ✓ | ✗ |
| Speaker Diarization | ✓ | ✗ |
| Sentiment Analysis | ✓ | ✗ |
| Topic Detection | ✓ | ✗ |
| Content Moderation | ✓ | ✗ |
| Summarization | ✓ | ✗ |
| Background Jobs | ✗ | ✓ |
| Scheduled Tasks | ✗ | ✓ |
| Event Triggers | ✗ | ✓ |
| Retries | ✗ | ✓ |
| Observability | ✗ | ✓ |
| Concurrency Control | ✗ | ✓ |
| Self Hostable | ✗ | ✓ |
✓ AssemblyAI Pros
- Industry-leading transcription accuracy
- Real-time and async transcription support
- Built-in audio intelligence (sentiment, topics, entities)
- Generous free tier with 100 hours included
✗ AssemblyAI Cons
- API-only (no consumer-facing UI)
- Per-hour pricing can add up for high volume
- Limited language support compared to competitors
✓ Trigger.dev Pros
- Write background jobs in TypeScript (not YAML/config)
- Built-in retries, queues, and concurrency controls
- Excellent developer experience with type safety
- Open-source with self-hosting option
✗ Trigger.dev Cons
- TypeScript only (no Python/Go support)
- Cloud pricing based on compute time
- Newer platform with evolving API
The Verdict
AssemblyAI is built for developers and podcast platforms, with a focus on speech-to-text and real-time-transcription. Trigger.dev targets typescript developers and saas apps and leads with background-jobs and scheduled-tasks.
Both tools come in at similar price points ($0.12/mo for AssemblyAI, $0/mo for Trigger.dev), so pricing won't make the decision for you.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.