# Bark vs eSpeak NG

| Attribute | Bark | eSpeak NG |
|---|---|---|
| **Vioscale score** | 32.3 (20% (low)) | 49.5 (26% (low)) |
| activity.commits_last_30d | 0 | 36 |
| adoption.dependent_repos | 8 | - |
| adoption.github_stars | 39,249 | 6,762 |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | An open-source model capable of generating multilingual speech and various audio outputs including music, background noise, and sound effects from text input. Supports 100+ languages automatically, includes 100+ speaker voice presets, and is available for commercial use. | A lightweight open source text-to-speech engine that converts written text into spoken audio using formant synthesis. Available as a command-line tool and C/library for integration across Linux, Windows, Android, and other platforms. |
| integrations.count | - | 3 |
| integrations.list | - | `[{"name":"MBROLA"},{"name":"SAPI5"},{"name":"C API library integration"}]` |
| language.primary | Jupyter Notebook | C |
| license.spdx | MIT | GPL-3.0 |
| platform.support | `{"cli":true}` | `{"cli":true,"mac":true,"linux":true,"android":true,"windows":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://github.com/pricing","retrievedAt":"2026-08-19T22:00:22.032Z"}` | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://github.com/pricing","retrievedAt":"2026-08-19T22:01:16.060Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | commercial |
| pricing.price_level | free | free |
| pricing.transparent | - | yes |
| release.cadence_days | - | 799 |
| release.history | - | `[{"url":"https://github.com/espeak-ng/espeak-ng/releases/tag/1.52.0","date":"2024-12-12T13:47:27Z","type":"stable","version":"1.52.0"},{"url":"https://github.com/espeak-ng/espeak-ng/releases/tag/1.51","date":"2022-04-02T19:43:39Z","type":"stable","version":"1.51"},{"url":"https://github.com/espeak-ng/espeak-ng/releases/tag/1.50","date":"2019-12-02T12:34:16Z","type":"stable","version":"1.50"},{"url":"https://github.com/espeak-ng/espeak-ng/releases/tag/1.49.2","date":"2017-09-24T09:37:08Z","type":"stable","version":"1.49.2"},{"url":"https://github.com/espeak-ng/espeak-ng/releases/tag/1.49.1","date":"2017-01-21T21:20:08Z","type":"stable","version":"1.49.1"},{"url":"https://github.com/espeak-ng/espeak-ng/releases/tag/1.49.0","date":"2016-09-10T10:20:46Z","type":"stable","version":"1.49.0"}]` |
| security.scorecard | 2.6 | 4.5 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=bark&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Text To Speech)

| Capability | Bark | eSpeak NG |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Voice cloning | - | - |
| Zero shot cloning | - | - |
| Streaming synthesis | - | - |
| Ssml support | - | - |
| Emotion style control | - | - |
| On device offline | - | - |
| Open source | - | - |
| Watermarking provenance | - | - |
| Cloning consent verification | - | - |

*Source: Vioscale. Generated 2026-09-01T17:10:28.663Z. "-" = undocumented, not absent.*