CSM 1B — Free AI Chat on Rewind.ai
Chat with CSM 1B for free — no signup, no credit card. Sesame's CSM 1B runs in your browser on Rewind.ai, with pay-as-you-go tokens and full API access.
What is 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 is suited for dialogue-oriented applications such as voice assistants and interactive agents.
How does CSM 1B work?
Type your message in the box above and CSM 1B replies instantly — no setup required. Your chat history is saved locally in your browser; sign up free to sync it across devices and get an extra 10,000 tokens. You can switch between CSM 1B and other models at any time from the picker at the top.
Is CSM 1B free?
CSM 1B is pay-as-you-go at $7.00/M input tokens, but you can use it without paying: every visitor gets 2,500 free tokens a day with no sign up, and a free account raises that to 5,000.