# eSpeak NG vs Murf AI

**Leader by vioscaleAI score:** Murf AI

| Attribute | eSpeak NG | Murf AI |
|---|---|---|
| **vioscaleAI score** | 41.5 (38% (low)) | 71.3 (53% (medium)) |
| activity.commits_last_30d | 42 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 6,945 | - |
| content.faq | `[{"answer":"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. It is indexed under Text To Speech.","source":"https://github.com/pricing","question":"What is eSpeak NG?","confidence":0.6},{"answer":"eSpeak NG is open source, so it can be self-hosted and used at no licence cost. It is released under the GPL-3.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://github.com/pricing","question":"Is eSpeak NG free to use?","confidence":0.6},{"answer":"eSpeak NG supports Windows, macOS, Linux, Android and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://github.com/pricing","question":"What platforms does eSpeak NG support?","confidence":0.6},{"answer":"Yes. eSpeak NG can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://github.com/pricing","question":"Can eSpeak NG be self-hosted?","confidence":0.6},{"answer":"We have confirmed 3 integrations for eSpeak NG, including MBROLA, SAPI5 and C API library integration. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://github.com/pricing","question":"What does eSpeak NG integrate with?","confidence":0.6},{"answer":"Yes. eSpeak NG is published under the GPL-3.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/espeak-ng/espeak-ng","question":"Is eSpeak NG open source?","confidence":0.95}]` | `[{"answer":"A text-to-speech platform that synthesizes realistic AI voices for video narration, presentations, training content, and customer interactions. Users can create voiceovers without hiring voice actors, with fine-grained control over tone and pacing. It is indexed under Text To Speech.","source":"https://murf.ai/pricing","question":"What is Murf AI?","confidence":0.6},{"answer":"Murf AI offers a free tier, so you can start without paying. Paid plans start at $19 per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://murf.ai/pricing","question":"Is Murf AI free?","confidence":0.6},{"answer":"We have confirmed browser-based access to Murf AI. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://murf.ai/pricing","question":"What platforms does Murf AI support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Murf AI, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://murf.ai/pricing","question":"Can Murf AI be self-hosted?","confidence":0.6},{"answer":"We have confirmed 5 integrations for Murf AI, including Canva, PowerPoint, Google Slides, Facebook and Windows apps. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://murf.ai/pricing","question":"What does Murf AI integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Murf AI. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Murf AI not holding them. Always confirm compliance directly before you rely on it.","source":"https://murf.ai","question":"What security certifications does Murf AI have?","confidence":0.48}]` |
| deployment.options | `{"on_prem":true,"self_hosted":true}` | `{"cloud":true,"on_prem":true}` |
| description.long | An open source application that generates audio speech from text, supporting numerous languages across Windows, Linux, and Android systems. It employs sound-generation technology to produce clear but synthesized speech efficiently on computers and mobile devices. | Cloud-based API and content studio for creating natural speech synthesis, transforming voice recordings, localizing content across languages, and cloning professional voices with real-time processing capability. |
| features.capabilities | `{"open_source":true,"ssml_support":true,"on_device_offline":true}` | `{"iso_27001":true,"soc2_type_ii":true,"pricing_model":"pay_per_character_api","voice_cloning":true,"architecture_model":"managed_cloud_saas_and_api","streaming_synthesis":true,"emotion_style_control":true,"speech_to_speech_sts_acting_and_accent_transfer":true,"sub_500ms_ultra_low_latency_streaming_api_available":true}` |
| integrations.count | 3 | 6 |
| integrations.list | `[{"name":"MBROLA"},{"name":"SAPI5"},{"name":"C API library integration"}]` | `[{"name":"Canva"},{"name":"PowerPoint"},{"name":"Google Slides"},{"name":"Facebook"},{"name":"Google"},{"name":"Windows apps"}]` |
| language.primary | C | - |
| license.spdx | GPL-3.0 | - |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"linux":true,"android":true,"windows":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://github.com/pricing","retrievedAt":"2026-10-14T22:37:23.101Z"}` | `{"type":"hybrid","plans":[{"free":true,"name":"Free Trial","summary":"$10 free monthly credit","features":["150+ voices in 35+ languages and styles","5 concurrent requests","24x7 chat support"],"contactSales":false,"includedLimits":{"voices":"150+","monthly_credit":"$10","concurrent_requests":"5"}},{"free":false,"name":"Pay as you go","summary":"$0.01/1000 characters for Falcon TTS; $0.03/1000 characters for studio-quality TTS; $0.10/minute for voice transformation; $0.02 for translation","features":["Purchased credit never expires","Priority Support"],"components":[{"per":{"qty":1000,"unit":"characters"},"kind":"metered","amount":0.01,"currency":"USD"},{"per":{"qty":1000,"unit":"characters"},"kind":"metered","amount":0.03,"currency":"USD"},{"per":{"qty":1,"unit":"minute"},"kind":"metered","amount":0.1,"currency":"USD"},{"per":{"qty":1,"unit":"unknown"},"kind":"metered","amount":0.02,"currency":"USD"}],"contactSales":false,"includedLimits":{"concurrent_requests":"5"}},{"free":false,"name":"Enterprise","summary":"Custom pricing with volume discounts for high-volume businesses","features":["Data Residency","On-Premise Deployment","Enterprise-grade concurrency","Dedicated Technical Support","Professional Voice Cloning","SLA assurance","Master Service Agreement"],"contactSales":true}],"summary":"From $0.01 per 1000 characters. Free tier with $10 monthly credit.","currency":"USD","freeTier":true,"sourceUrl":"https://murf.ai/pricing","retrievedAt":"2026-10-02T10:54:36.352Z","startingPrice":{"unit":"characters","amount":0.01,"currency":"USD"}}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | freemium |
| pricing.price_level | free | low |
| pricing.starting_price | - | `{"amount":0.01,"currency":"USD"}` |
| pricing.transparent | yes | 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.certifications | - | `[{"name":"HIPAA","status":"active"},{"name":"ISO 27001","status":"active"},{"name":"SOC 2 Type II","level":"Type II","status":"active"}]` |
| security.gdpr | - | yes |
| security.hipaa | - | yes |
| security.iso27001 | - | yes |
| security.scorecard | 4.7 | - |
| security.soc2 | - | yes |
| security.trust_center | https://github.com/security | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=debian&package_name=espeak-ng&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Text To Speech)

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

*Source: vioscaleAI. Generated 2026-10-16T20:03:11.437Z. "-" = undocumented, not absent.*