# Vosk vs whisper.cpp

| Attribute | Vosk | whisper.cpp |
|---|---|---|
| **Vioscale score** | 37.5 (28% (low)) | 68.8 (24% (low)) |
| activity.commits_last_30d | 1 | 100 |
| adoption.dependent_repos | 183 | 18 |
| adoption.github_stars | 15,076 | 53,196 |
| deployment.options | `{"on_prem":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | Vosk enables voice-to-text conversion that runs locally without internet connectivity, supporting over 20 language variants with portable models suitable for mobile and embedded systems. It provides real-time streaming capabilities and allows dynamic vocabulary adjustment. | An open-source library that provides speech-to-text transcription capabilities, ported from OpenAI's Whisper model. It supports various hardware accelerators and runs on multiple platforms with a command-line interface. |
| integrations.count | 18 | - |
| integrations.list | `[{"name":"Asterisk"},{"name":"Freeswitch"},{"name":"Jigasi"},{"name":"ROS"},{"name":"openFrameworks"},{"name":"Opencast"},{"name":"IBus"},{"name":"GStreamer"},{"name":"nerd-dictation"},{"name":"dicio-android"},{"name":"openaudiosearch"},{"name":"LVTerminal"},{"name":"Dexter"},{"name":"numenvoice"},{"name":"JustSayIt"},{"name":"OpenVoiceOS"},{"name":"CaptionIt"},{"name":"voice_perception"}]` | - |
| language.primary | Jupyter Notebook | C++ |
| license.spdx | Apache-2.0 | MIT |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"ios":true,"linux":true,"android":true}` | `{"cli":true,"ios":true,"mac":true,"linux":true,"android":true}` |
| pricing | - | `{"type":"open_source","freeTier":true,"sourceUrl":"https://github.com/pricing","retrievedAt":"2026-08-19T21:33:54.410Z"}` |
| pricing.free_tier | - | yes |
| pricing.model | - | commercial |
| pricing.price_level | - | free |
| pricing.transparent | - | yes |
| release.cadence_days | 51 | 15 |
| release.history | `[{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.50","date":"2024-04-22T13:02:41Z","type":"stable","version":"v0.3.50"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.45","date":"2022-12-14T23:05:03Z","type":"stable","version":"v0.3.45"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.43","date":"2022-07-14T23:22:53Z","type":"stable","version":"v0.3.43"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.42","date":"2022-05-26T13:45:56Z","type":"stable","version":"v0.3.42"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.38","date":"2022-05-24T12:16:29Z","type":"stable","version":"v0.3.38"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.32","date":"2021-10-30T21:57:48Z","type":"stable","version":"v0.3.32"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.31","date":"2021-08-31T20:18:14Z","type":"stable","version":"v0.3.31"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.30","date":"2021-07-11T07:50:48Z","type":"stable","version":"v0.3.30"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/v0.3.27","date":"2021-05-05T19:48:54Z","type":"stable","version":"v0.3.27"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.21","date":"2021-02-12T21:51:09Z","type":"stable","version":"0.3.21"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.18","date":"2021-02-07T22:22:35Z","type":"stable","version":"0.3.18"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.17","date":"2021-01-09T16:17:11Z","type":"stable","version":"0.3.17"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.16","date":"2021-01-07T23:24:13Z","type":"stable","version":"0.3.16"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.15","date":"2020-10-13T00:14:40Z","type":"stable","version":"0.3.15"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.10","date":"2020-06-29T12:47:05Z","type":"stable","version":"0.3.10"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.9","date":"2020-06-22T23:35:00Z","type":"stable","version":"0.3.9"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.7","date":"2020-05-03T19:45:52Z","type":"stable","version":"0.3.7"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.6","date":"2020-04-28T21:54:36Z","type":"stable","version":"0.3.6"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.5","date":"2020-04-22T20:30:58Z","type":"stable","version":"0.3.5"},{"url":"https://github.com/alphacep/vosk-api/releases/tag/0.3.3","date":"2020-02-27T14:59:58Z","type":"stable","version":"0.3.3"}]` | `[{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.9.3","date":"2026-08-20T11:39:36Z","type":"prerelease","version":"v1.9.3"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/b4938","date":"2026-08-20T11:33:19Z","type":"stable","version":"b4938"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.9.2","date":"2026-08-04T15:31:37Z","type":"stable","version":"v1.9.2"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.9.1","date":"2026-06-19T05:53:19Z","type":"stable","version":"v1.9.1"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.9.0","date":"2026-06-17T10:19:21Z","type":"stable","version":"v1.9.0"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.8.7","date":"2026-06-16T10:59:32Z","type":"stable","version":"v1.8.7"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.8.6","date":"2026-06-02T06:22:27Z","type":"stable","version":"v1.8.6"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.8.5","date":"2026-05-29T12:07:04Z","type":"stable","version":"v1.8.5"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.8.4","date":"2026-03-19T15:08:38Z","type":"stable","version":"v1.8.4"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.8.3","date":"2026-01-15T11:27:48Z","type":"stable","version":"v1.8.3"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.8.2","date":"2025-10-15T08:32:18Z","type":"stable","version":"v1.8.2"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.8.1","date":"2025-10-12T10:18:45Z","type":"stable","version":"v1.8.1"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.8.0","date":"2025-09-30T18:44:14Z","type":"stable","version":"v1.8.0"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.7.6","date":"2025-06-25T13:50:49Z","type":"stable","version":"v1.7.6"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.7.5","date":"2025-04-02T14:34:08Z","type":"stable","version":"v1.7.5"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/b2365","date":"2025-03-31T15:04:32Z","type":"stable","version":"b2365"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.7.4","date":"2025-01-06T13:16:31Z","type":"stable","version":"v1.7.4"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.7.3","date":"2024-12-18T16:15:19Z","type":"stable","version":"v1.7.3"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.7.3-pre","date":"2024-12-09T09:34:50Z","type":"prerelease","version":"v1.7.3-pre"},{"url":"https://github.com/ggml-org/whisper.cpp/releases/tag/v1.7.2","date":"2024-11-19T16:55:56Z","type":"stable","version":"v1.7.2"}]` |
| security.scorecard | 3.3 | 5.1 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=vosk&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fggerganov%2Fwhisper.cpp%2Fbindings%2Fgo&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Speech To Text)

| Capability | Vosk | whisper.cpp |
|---|:--:|:--:|
| **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 2026-09-01T14:43:17.608Z. "-" = undocumented, not absent.*