Compare Gemini 3.1 Flash TTS Preview from Google and Zonos v0.1 Transformer from zyphra on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
Gemini 3.1 Flash TTS Preview and Zonos v0.1 Transformer are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Gemini 3.1 Flash TTS Preview, from Google, is priced at $1/M tokens input, $20/M tokens output on OpenRouter.
Zonos v0.1 Transformer, from zyphra, is priced by the provider serving it on OpenRouter.