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Sesame: CSM 1B

Sesame: CSM 1B is a speech model from Sesame, with a 4K-token context window, priced at $7.00 / 1M tokens. Fully Informed benchmarks and compares models like Sesame: CSM 1B across the whole OpenRouter catalogue.

Vendor SesameType Speech4K contextPrice $7.00 / 1M tokens
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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...
Related speech models
Canopy Labs: Orpheus 3B$7.00 / 1M tokensDeepgram: Aura-2$30.00 / 1M tokensGoogle: Gemini 3.1 Flash TTS Preview$1.00 in · $20.00 out / 1Mhexgrad: Kokoro 82M$0.62 / 1M tokensMicrosoft: MAI-Voice-2$22.00 / 1M tokensMiniMax: Speech 2.8 HD$100.00 / 1M tokens
FAQ
What is Sesame: CSM 1B?
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...
What is the context window of Sesame: CSM 1B?
Sesame: CSM 1B supports a 4K-token context window.
How much does Sesame: CSM 1B cost?
Sesame: CSM 1B is priced at $7.00 / 1M tokens via OpenRouter.
What are alternatives to Sesame: CSM 1B?
Comparable speech models include Canopy Labs: Orpheus 3B, Deepgram: Aura-2, Google: Gemini 3.1 Flash TTS Preview, hexgrad: Kokoro 82M.
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