Google Cloud Text-to-Speech vs SESTEK Text-to-Speech
Google Cloud Text-to-Speech
cloud.google.comSESTEK Text-to-Speech
sestek.comSide by side
| Figure | Google Cloud Text-to-Speech | SESTEK Text-to-Speech |
|---|---|---|
| Price from | $4/mo | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 14 | 3 |
| Spec score · Text-to-speech tools | 9.2 (#8) | 8.1 (#90) |
| Spec score · Text-to-Speech Software | 9.0 (#13) | 7.9 (#124) |
| API access | Yes | Yes |
| Custom voices | Chirp 3 instant custom voice can create personalized voice models with as little as 10 seconds of audio input and is available in more than 30 locales. | SESTEK can develop a brand-specific voice model exclusive to an organization. |
| Export formats | MP3,LINEAR16,OGG_OPUS,MULAW,ALAW | WAV,Opus,MP3,FLV |
| Integrations | GetApp lists integrations including Cloud Vision API, YouTube, Unity and Studio. | The platform supports Azure and ElevenLabs integrations and can connect with SESTEK Speech Recognition, Virtual Translator, and AI Agents. |
| Platforms | web,api | Windows,Linux,API |
| Purpose | The API converts text into natural-sounding speech and can accept text or SSML input to produce audio data. | SESTEK TTS converts written text into natural-sounding speech for business applications. |
| Security | Google Cloud states that data is encrypted in transit and at rest with audited access to encryption keys. | SESTEK states that it holds ISO 27001, ISO 9001, and SOC 2 Type 2 certifications and undergoes annual independent audits. |
| Speech controls | The API supports pitch adjustment up to 20 semitones, speaking rates up to four times faster or slower than normal, and volume gain from -96 dB to +16 dB. | Users can adjust tone, pace, emphasis, and volume without changing the underlying voice model. |
| SSML | SSML controls pauses, number and date formatting, pronunciation and other delivery details. | TTS supports commonly used SSML tags for pauses, pronunciation, external audio, and voice switching. |
| Voice cloning | Yes | Yes |
| What it does | Cloud Text-to-Speech converts text or SSML input into natural human speech audio. | SESTEK Text-to-Speech converts written content into clear, expressive, human-like speech. |
Plans
Google Cloud Text-to-Speech
- Standard voices$4 a month
- WaveNet voices$4 a month
- Neural2 voices$16 a month
- Polyglot voices$16 a month
- Chirp 3: HD voices$30 a month
- Studio voices$160 a month
- Instant custom voice$60 a month
- Gemini 2.5 Flash TTS and Gemini 2.5 Flash-Lite Preview TTSPrice not published
- Gemini 3.1 Flash TTSPrice not published
- Gemini 2.5 Flash TTS / Gemini 2.5 Flash-Lite Preview TTSPrice not published
SESTEK Text-to-Speech
- Custom agreementPriced on request
- Pay-as-you-goPriced on request
- SubscriptionPriced on request
In their own words
Google Cloud Text-to-Speech
Google Cloud Text-to-Speech is an API that converts text or SSML into audio data for applications. It offers more than 380 voices across more than 75 languages and variants, with REST or gRPC integration and output formats including MP3, LINEAR16, OGG_OPUS, MULAW, and ALAW. Gemini-TTS supports single- or multispeaker speech guided by natural-language prompts for style, accent, pace, tone, and emotional expression. Chirp 3 instant custom voice can create a personalized voice model from as little as 10 seconds of audio and is available in more than 30 locales. Streaming synthesis supports real-time conversations, while long-audio synthesis accepts up to 1 million bytes of input. Speech controls include pitch, speaking rate, and volume gain. Billing counts input characters, including spaces, newlines, and SSML tags except the mark tag, and billing must be enabled. Standard and WaveNet voices cost US$4 per 1 million characters, with 0 to 4 million characters free. Other voice models have different rates and free-use limits. New customers can receive $300 in Google Cloud credits.
SESTEK Text-to-Speech
SESTEK Text-to-Speech converts written text into speech for business applications. It supports more than 20 languages and offers accent-specific voices such as Gulf, Najdi, Kuwaiti, and Emirati Arabic, along with American and British English. Users can adjust tone, pace, emphasis, and volume, and define pronunciations for abbreviations, brand names, product codes, and specialized terms. Common SSML tags cover pauses, pronunciation, external audio, and voice switching. SESTEK can develop a voice model for an organization that is exclusive to it. Deployment is available on-premises or in the cloud, with the same feature set in either arrangement. Standard voices run on Windows, Linux, Docker Compose, and Kubernetes without a GPU; Premium voices require a GPU and run on Linux, Docker Compose, and Kubernetes. APIs and SDKs support integration with existing software. The platform also supports Azure and ElevenLabs integrations and can connect to SESTEK Speech Recognition, Virtual Translator, and AI Agents. Exports include WAV, Opus, MP3, and FLV. Licensing is available through pay-as-you-go, subscription, or custom agreement, but pricing is on request.