Compare Gemini 3.1 Flash TTS Preview from Google and CSM 1B from sesame 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 CSM 1B 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, has a 32,768-token context window and is priced at $1/M tokens input, $20/M tokens output on OpenRouter.
CSM 1B, from sesame, has a 4,096-token context window and is priced at $7/M characters on OpenRouter.