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Favicon for sesame

sesame

Access 1 sesame model through the OpenRouter unified API including CSM 1B. Compare pricing, context windows, benchmarks, and capabilities between different sesame models.

sesame tokens processed on OpenRouter

  • Favicon for sesame
    Sesame: CSM 1BCSM 1B
    18K tokens

    CSM 1B is a conversational speech model from Sesame. It accepts text input and produces English speech output, with voice options spanning conversational and read-speech styles. At 1B parameters, it is suited for dialogue-oriented applications such as voice assistants and interactive agents.

    by sesameApr 23, 20264K context$7/M characters

Frequently asked questions

OpenRouter serves 1 sesame model behind one OpenAI-compatible API. Create an OpenRouter API key, point your client at https://openrouter.ai/api/v1, and set the model to an ID such as sesame/csm-1b. The quickstart has request examples for every supported SDK.

CSM 1B has the largest context window of any sesame model on OpenRouter, accepting up to 4,096 tokens per request.

CSM 1B is the most recently added sesame model on OpenRouter, listed on April 23, 2026.