Google Cloud Text-to-Speech vs Yandex SpeechKit

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.

Yandex SpeechKit is a managed speech-synthesis service available through a web interface and API. It supports voice cloning, six languages, and audio output in LPCM, OggOpus and MP3. Input is limited to 250 characters. Speech synthesis API v3 plans for Kazakhstan and Russia each list 250 characters and 24 seconds, while Brand Voice Self Service and Brand Voice Premium provide custom unique voice synthesis with request-based pricing; no prices are listed for these plans. A free plan is available, although the pricing model is marked paid. The entry lists two cloud regions and a 2018 founding date, with headquarters in Dubai. Related managed infrastructure includes encrypted persistent storage, snapshots, high availability, private networking and seven-day backup retention. Storage volumes can reach 256 TB, with several volume types. Managed clusters support Valkey and Redis, and S3 compatibility is listed.