# AssemblyAI vs faster-whisper

**Leader by Vioscale score:** AssemblyAI

| Attribute | AssemblyAI | faster-whisper |
|---|---|---|
| **Vioscale score** | 80.2 (60% (medium)) | 38.9 (28% (low)) |
| activity.commits_last_30d | - | 0 |
| adoption.dependent_repos | - | 35 |
| adoption.github_stars | - | 25,097 |
| deployment.options | `{"cloud":true}` | `{"self_hosted":true}` |
| description.long | A platform providing speech-to-text APIs for both pre-recorded and live audio, voice agent capabilities, and audio analysis features like speaker identification and sentiment analysis. Serves millions of developers with focus on accuracy and scalability. | An open-source implementation of speech recognition that accelerates transcription using optimized machine learning inference, with support for multiple platforms and container deployment. |
| integrations.count | 5 | 8 |
| integrations.list | `[{"name":"Semantic Kernel .NET"},{"name":"Vercel AI SDK"},{"name":"OpenAI GPT-5.6 Luna"},{"name":"OpenAI GPT-5.6 Terra"},{"name":"Google Gemini"}]` | `[{"name":"OpenAI API"},{"name":"OpenAI SDK"},{"name":"OpenAI CLI"},{"name":"HomeAssistant"},{"name":"Konele"},{"name":"Docker"},{"name":"AzureML"},{"name":"FastAPI"}]` |
| language.primary | - | Python |
| license.spdx | - | MIT |
| market.availability | `{"primaryMarkets":["US","GB"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true}` | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"usage","plans":[{"free":false,"name":"Async Speech-to-Text","summary":"$0.37/hour","components":[{"per":{"qty":1,"unit":"hour"},"kind":"metered","amount":0.37,"currency":"USD"}],"description":"Pre-recorded audio transcription","contactSales":false},{"free":false,"name":"Real-time Speech-to-Text","summary":"$0.47/hour","components":[{"per":{"qty":1,"unit":"hour"},"kind":"metered","amount":0.47,"currency":"USD"}],"description":"Live audio stream transcription","contactSales":false},{"free":false,"name":"Sync Speech-to-Text","summary":"$0.45/hour","components":[{"per":{"qty":1,"unit":"hour"},"kind":"metered","amount":0.45,"currency":"USD"}],"description":"Same-request transcription for short clips","contactSales":false}],"addOns":[{"name":"Speaker Diarization","components":[{"per":{"qty":1,"unit":"hour"},"kind":"metered","amount":0.12,"currency":"USD"}]},{"name":"LLM Prompting","components":[{"per":{"qty":1,"unit":"hour"},"kind":"metered","amount":0.05,"currency":"USD"}]},{"name":"Voice Isolation","components":[{"per":{"qty":1,"unit":"hour"},"kind":"metered","amount":0.1,"currency":"USD"}]},{"name":"SSO","components":[{"kind":"fixed","amount":199,"period":"month","currency":"USD"}]}],"summary":"From $0.37/hour for async transcription. Free tier available.","currency":"USD","freeTier":true,"sourceUrl":"https://www.assemblyai.com/blog/lower-latency-new-pricing","retrievedAt":"2026-08-19T21:32:28.755Z","startingPrice":{"unit":"hour","amount":0.37,"currency":"USD"},"billingPeriods":["month"]}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://github.com/pricing","retrievedAt":"2026-08-19T21:34:29.045Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | commercial |
| pricing.price_level | low | free |
| pricing.starting_price | `{"amount":0.37,"currency":"USD"}` | - |
| pricing.transparent | yes | - |
| release.cadence_days | - | 27 |
| release.history | - | `[{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v1.2.1","date":"2025-10-31T11:34:00Z","type":"stable","version":"v1.2.1"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v1.2.0","date":"2025-08-06T00:32:35Z","type":"stable","version":"v1.2.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v1.1.1","date":"2025-01-01T14:45:17Z","type":"stable","version":"v1.1.1"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v1.1.0","date":"2024-11-21T17:19:27Z","type":"stable","version":"v1.1.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v1.0.3","date":"2024-07-01T10:05:08Z","type":"stable","version":"v1.0.3"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v1.0.2","date":"2024-05-06T02:08:27Z","type":"stable","version":"v1.0.2"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v1.0.1","date":"2024-03-01T10:46:22Z","type":"stable","version":"v1.0.1"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v1.0.0","date":"2024-02-22T08:56:53Z","type":"stable","version":"v1.0.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.10.1","date":"2024-02-22T12:08:53Z","type":"stable","version":"v0.10.1"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.10.0","date":"2024-02-22T11:55:44Z","type":"stable","version":"v0.10.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.9.0","date":"2023-09-18T14:34:26Z","type":"stable","version":"v0.9.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.8.0","date":"2023-09-04T10:01:17Z","type":"stable","version":"v0.8.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.7.1","date":"2023-07-24T09:20:02Z","type":"stable","version":"v0.7.1"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.7.0","date":"2023-07-18T13:30:31Z","type":"stable","version":"v0.7.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.6.0","date":"2023-05-24T14:22:34Z","type":"stable","version":"v0.6.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.5.1","date":"2023-04-26T15:41:33Z","type":"stable","version":"v0.5.1"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.5.0","date":"2023-04-25T15:04:48Z","type":"stable","version":"v0.5.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.4.1","date":"2023-04-04T10:58:53Z","type":"stable","version":"v0.4.1"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.4.0","date":"2023-04-03T15:29:31Z","type":"stable","version":"v0.4.0"},{"url":"https://github.com/SYSTRAN/faster-whisper/releases/tag/v0.3.0","date":"2023-03-24T10:00:28Z","type":"stable","version":"v0.3.0"}]` |
| reliability.sla_pct | 99.9 | - |
| reliability.status_page | yes | - |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | - |
| security.hipaa | yes | - |
| security.pci | yes | - |
| security.soc2 | yes | - |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=faster-whisper&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Speech To Text)

| Capability | AssemblyAI | faster-whisper |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Real time streaming | - | - |
| Speaker diarization | - | - |
| Custom vocabulary | - | - |
| Fine tuning | - | - |
| Word timestamps | - | - |
| Punctuation formatting | - | - |
| Pii redaction | - | - |
| Vertical model | - | - |
| Offline on device | - | - |
| Open source | - | - |

*Source: Vioscale. Generated 2026-09-01T17:09:55.269Z. "-" = undocumented, not absent.*